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Huawei H12-811_V1.0 HCIA-Datacom V1.0 Exam Exam Practice Test

Demo: 290 questions
Total 967 questions

HCIA-Datacom V1.0 Exam Questions and Answers

Question 1

Which of the following protocols consist of the PPP agreement? ()*

Options:

A.

NCP

B.

PPPOE

C.

Authentication protocol

D.

LCP

Question 2

As shown in the figure, which of the following ports will be in a blocking state?

Options:

A.

G0/0/2 of SWC

B.

G0/0/3 of SWB

C.

G0/0/1 of SWC

D.

G0/0/3 of SWA

Question 3

With what kind of routers does a DRother router exchange link state information and route information?

Options:

A.

DRother

B.

DR

C.

BDR

D.

All OSPF neighbors

Question 4

What are the stable states of OSPF neighbor relationship? ()*

Options:

A.

2-way

B.

Down

C.

Attempt

D.

Full

Question 5

The controller is the core component of SDN. The controller is connected to the device through the southbound interface. The following is missing from the controller southbound agreement? ()

Options:

A.

SNMP

B.

PCEP

C.

OpenFlow

D.

NETCONF

Question 6

What are the advantages of the OSPF protocol? ()*

Options:

A.

Support area division

B.

OSPF supports load sharing for equal-cost routes

C.

OSPF supports message authentication

D.

OSPF supports typeless inter-domain routing (CIDR)

Question 7

Through sR (Segment Routing), an explicit path can be easily defined. The nodes in the network only need to maintain the SegmentRouting information to cope with the real-time and rapid development of the business. What are the following characteristics of Segment Routing?

Options:

A.

Extending the existing protocol (eg IGP) can make the existing network better and smoothly evolve

B.

SR (Segment Routing) adopts IP forwarding, no extra dimensioning is required-a label forwarding table

C.

Source routing technology is used to provide the ability to quickly exchange text between the network and upper-layer applications

D.

At the same time, it supports the centralized control mode of the controller and the distributed control mode of the transponder, providing a balance between centralized control and distributed control

Question 8

What are the advantages of using DHCP to allocate IP addresses?

Options:

A.

DHCP can prevent IP address conflicts.

B.

DHCP provides heavy workload and is difficult to manage.

C.

IP addresses can be reused.

D.

If the configuration information changes, for example, the DNS server address changes, the administrator only needs to modify the configuration information on the DHCP server, facilitating unified management.

Question 9

Which of the following network types are supported by OSPF?

Options:

A.

Point-to-point (P2P)

B.

Point-to-multipoint (P2MP)

C.

Broadcast

D.

NBMA

Question 10

On Huawei routers, which of the following is the default preference of static routing?

Options:

A.

0

B.

100

C.

60

D.

120

Question 11

Which of the following commands can be used to query the configuration information of the device's 0SPF protocol? ()*

Options:

A.

dis ip routing-table

B.

Enter the command "display t in the OsPF protocol view.

his\

,.:

,.:

Question 12

When an Ethernet frame is received by an interface on a Layer 2 Ethernet switch, which field is used to generate an entry in the MAC address table?

Options:

A.

Destination MAC address

B.

Source MAC address

C.

Source IP address

D.

Destination IP address

Question 13

After the two routers are configured with 0SPF, the administrator configures the command on RTA. The following description is correct ()

Options:

A.

The neighbor relationship between the two routers will be down

B.

The neighbor relationship between the two routers will not be affected

C.

RTA. Will no longer send OSPF packets

D.

RTA. will continue to receive and analyze and process OSPF packets sent by RTB.

Question 14

An ACL rule is as follows. Which of the following IP addresses can be matched by the permit rule?

rule 5 permit ip source 10.0.2.0 0.0.254.255

Options:

A.

10.0.6.7

B.

10.0.5.6

C.

10.0.4.5

D.

10.0.2.1

Question 15

When OSPF protocol establishes adjacency, which of the following parameters must be consistent?*

Options:

A.

Router ID

B.

AreA.ID

C.

Router Priority

D.

Router Dead.Interval

Question 16

In the case of Huawei routers, what is the "-i" parameter in a Ping command issued on a VRP operating system used to set?

Options:

A.

Destination IP address for receiving an Echo Reply packet.

B.

Interface for receiving an Echo Reply packet.

C.

Source IP address for sending an Echo Request packet.

D.

Interface for sending an Echo Request packet.

Question 17

The output information of a certain device is shown in the figure. Which of the following statements are correct? () (Multiple Choice Questions)

Options:

A.

The standby main control board of the device is operating normally

B.

The VRP operating version of this device is CRP5

C.

The device name is Huawei

D.

The device has been running for 1 minute

Question 18

On the Huawei VRP, what is the default preference of different route types, in descending order?

Options:

A.

Direct > Static > RIP > OSPF

B.

Direct > OSPF > RIP > Static

C.

Direct > RIP > Static > OSPF

D.

Direct > OSPF > Static > RIP

Question 19

What are the ACL classifications*

Options:

A.

Basic ACL

B.

Advanced ACL

C.

Layer 2 ACL

D.

User-defined ACL

Question 20

How to add AP on AC.? ()*

Options:

A.

Import AP offline

B.

Automatically discover AP

C.

Add online

D.

Manually confirm APs in the non-certified list

Question 21

The network shown in the figure below. From a security perspective, router A refuses to receive OSPF packets and ICMP packets received from interface G0/0/1. Which of the following commands can achieve this requirement? () (Multiple Choice Questions)

Options:

A.

acl number 3000

Rule 5 deny 89

Rule 10 deny icmp

#

Interface GigabitEthernet0/0/1Traffic-filter inbound acl 3000#

B.

acl number 3000

Rule 5 deny 89

Rule 10 deny 1

#

Interface GigabitEtherneto/0/1Traffic-filter inbound acl 3000#

C.

acl number 2000

Rule 5 deny 89

Rule 10 deny 1

#

Interface GigabitEthernet0/0/1Traffic-filtet inbound acl 2000#

D.

acl number 3000

Rule 5 deny ospf

Rule 10 deny icmp

#

Interface GigabitEthernet0/0/1Traffic-filtet inbound acl 3000#

Question 22

Which statement about the dynamic AC. address table is correct?

Options:

A.

The dynamic MAC obtained through the source AC. Address learning in the message. The table entries will age

B.

By viewing the number of specified dynamic MAC. address table entries, you can get the number of users communicating under the interface. After the device restarts, the previous dynamic table entries will be lost

C.

After the device restarts, the previous dynamic entries will be lost

D.

After the device restarts, the previously saved entries will not be lost

Question 23

Network administrators use Ping to test the connectivity of the network. Which of the following protocols may be used in this process? ()

Options:

A.

ICMP

B.

UDP

C.

TCP

D.

ARP

Question 24

Which authorization modes are supported by AAA on Huawei ARG3 series routers? ()*

Options:

A.

Not authorized

B.

HWTACACS authorization

C.

Local authorization

D.

Authorization after successful RADIUS authentication

Question 25

Which of the following port states does the RSTP protocol include?

Options:

A.

Discarding

B.

Forwarding

C.

Listening

D.

Learning

Question 26

Which of the following applications is based on the TCP protocol?()*

Options:

A.

Ping

B.

TFTP

C.

FTP

D.

HTTP

Question 27

Which of the following descriptions about STP designated ports is correct?

Options:

A.

Designated ports are responsible for sending BPDU to connected network segments.

B.

Designated ports forward frames destined for the root switch.

C.

Each bridge can have only one designated port.

D.

Designated ports represent the path leading to the root switch.

Question 28

The network administrator hopes that the data packets sent from host A. to host B. pass through the G0/0/3 interface between routers, and the data packets sent from host B. to host A. pass through G0/ between routers. 0/4 interface, which of the following commands can achieve this requirement? ()

Options:

A.

RTA.:ip route-statiC.10.0.12.5 255.255.255.252 11.0.12.2 RTB.:ip route-static/n10.0.12.1255.255.255.25211.0.12.5

B.

RTA.:ip route-statiC.10.0.12.5 255.255.B255.252 11.0.12.6 RTB.:ip route-static/n10.0.12.1255.255.255.25211.0.12.1

C.

RTA.:ip route-statiC.0.0.0.0 0.0.0.0 11.0.12.2 RTB.:ipRoute-statiC.0.0.0.00.0.0.0ln11.0.12.5

D.

RTA.:ip route-statiC.0.0.0.0 0.0.0.0 11.0.12.6 RTB.:ip

Route-statiC.0.0.0.00.0.0.0n11.0.12.1

Question 29

The country code configuration affects the actual transmission frequency and maximum transmission power.

Options:

A.

TRUE

B.

FALSE

Question 30

When configuring the PPP authentication mode as PAP, which of the following operations are necessary? ()*

Options:

A.

Configure the data link layer encapsulation type of the interface connected to the peer device to PPP

B.

Add the user name and password of the authenticated party to the authenticating party's local user list

C.

Set the authentication mode of PPP to CHAP

D.

Configure the user name and password sent to the authenticating party on the authenticated party

Question 31

Which of the following port states is not included in Rapid Spanning Tree Protocol (RSTP)?

Options:

A.

Learning

B.

Forwarding

C.

Blocking

D.

Discarding

Question 32

Which of the following fields are present in both IPv6 and IPv4 packet headers? ()*

Options:

A.

Next Header

B.

Destination Address

C.

Version

D.

Source Address

Question 33

Which of the following fields does the MPLS header include? ()*

Options:

A.

EXP

B.

TTL

C.

Label

D.

Tos

Question 34

Which NAT can convert multiple private network addresses into one public network address to access the public network at the same time

Options:

A.

Static NAT

B.

Dynamic NAT

C.

NAPT

D.

Easy IP

Question 35

Which of the following commands can switch a view from the system view to the user view?

Options:

A.

System-view

B.

User-view

C.

Quit

D.

Router

Question 36

The priority of static routes cannot be manually specified.

Options:

A.

TRUE

B.

FALSE

Question 37

Dynamic routing protocols can automatically adapt to network topology changes.

Options:

A.

TRUE

B.

FALSE

Question 38

Which of the following MAC addresses cannot be used as the MAC address of host network adapters?

Options:

A.

0002-0304-05-06

B.

02-03-04-05-06-07

C.

01-02-03-04-05-06

D.

03-04-05-06-07-08

Question 39

Making a call on a landline telephone is a type of network communication.

Options:

A.

TRUE

B.

FALSE

Question 40

The users who log on the router through Telnet are not permitted to configure an IP address. What is the possible reason?

Options:

A.

Privilege level of Telnet is set incorrectly.

B.

SNMP parameters are set incorrectly.

C.

The authentication mode of Telnet is set incorrectly.

D.

Communication failures occur between the user and the router.

Question 41

DHCP is called Dynamic Host Configuration Protocol. It mainly assigns IP addresses and DNS information to hosts automatically. The messages used are ()

Options:

A.

discover

B.

Offer(Provided)

C.

request

D.

ACK (acknowledgement)

Question 42

Which of the following statements about the various versions of the SNMP protocol are correct?

Options:

A.

The SNMPv2C. message has the functions of identity verification and encryption processing.

B.

SNMPv.3 messages have the functions of identity verification and encryption processing.

C.

SNMPv1 uses UDP as the transport layer protocol, while SNMPv2C. and SNMPv3 use TCP as the transport layer protocol, so the reliability is higher.

D.

SNMPv2C. follows the 5 protocol operations defined in the v1 version and adds two additional operations.

Question 43

When the host accesses the web service of the server, the value of the "Protocol" field at the network layer is 6.

Options:

A.

TRUE

B.

FALSE

Question 44

In the following figure, all links are Ethernet links, and all interfaces on the routers are running OSPF. Given this, how many DRs will be elected on this network?

Options:

A.

1

B.

2

C.

3

D.

4

Question 45

The load balancing modes at both ends of an Eth-Trunk can be different.

Options:

A.

TRUE

B.

FALSE

Question 46

Which of the following types does IPv6 address include? ()*

Options:

A.

Unicast address

B.

Broadcast address

C.

Multicast address

D.

Anycast address

Question 47

After a fault occurs in the network, the administrator finds that the configuration of a certain router has been modified through troubleshooting. What measures should the administrator take to avoid this situation from happening again? ()*

Options:

A.

The administrator should configure ACL to control that only the administrator can log in to the device

B.

The administrator should enable port-security on the routed management port

C.

The administrator should configure AAA. to authenticate and authorize users who log in to the device

D.

The administrator should configure the permission level of all accounts except the administrator to log in to the device as

Question 48

The administrator cannot log in to the Huawei router through Telnett, but other administrators can log in normally, so which of the following are the possible reasons? ()*

Options:

A.

The authority level of the administrator user account has been modified to 0

B.

The administrator user account has been disabled

C.

The Te1net service of the AR2200 router has been disabled

D.

The administrator user account has been deleted

Question 49

Which of the following packets is used by OSPF to describe its link state database (LSDB)?

Options:

A.

LSR

B.

DD

C.

LSU

D.

HELLO

Question 50

On the network shown in the figure, the router receives a data packet with the destination IP address 11.0.12.1 from Host A.

After the packet is forwarded by the router, which of the following are the destination MAC address and destination IP address of the data packet?

Options:

A.

MAC-C, 11.0.12.1

B.

MAC-D, 11.0.12.1

C.

MAC-B, 11.0.12.1

D.

MAC-D, 10.0.12.2

Question 51

Which of the following statements about RA. and RS messages in IPv6 are correct? ()*

Options:

A.

RS is used to request address prefix information

B.

RA. Used to reply address prefix information

C.

D. RS is used to reply address prefix information

Question 52

Refer to the following display vlan command output on SWA. Which of the following interfaces can forward untagged data frames from VLAN 40?

Options:

A.

GE0/0/2

B.

GE0/0/3

C.

GE0/0/4

D.

GE0/0/5

Question 53

On the VRP CLI, files cannot be permanently deleted using the delete or delete /unreserved command. To permanently delete them, you need to delete the files in the recycle bin.

Options:

A.

TRUE

B.

FALSE

Question 54

Which of the following statements about IPv6 anycast addresses are correct?

Options:

A.

The group anycast address and the single address address use the same address space

B.

Back to provide services with more than functions

C.

The packet whose destination address is the anycast address will be sent to the nearest network interface in the sense of routing

D.

Back to achieve service load sharing

Question 55

What is the protocol of the Router Advertisement (RA) packet, which is used in IPv6 stateless address auto-configuration?

Options:

A.

TCPv6

B.

ICMPv6

C.

UDPv6

D.

IGMPv6

Question 56

Refer to the graphic, after the ping 10.1.1.2 command is executed on R1, LSW1 receives a tagged data frame from VLAN 10 on LSW2.

Options:

A.

TRUE

B.

FALSE

Question 57

Which of the following is a link-state routing protocol?

Options:

A.

FTP

B.

OSPF

C.

Direct

D.

Static

Question 58

In order to detect the connectivity status of the CAPWAP tunnel, after the CAPWAP tunnel is established, which of the following CAPTAP messages is used by the AC for detection? ()*

Options:

A.

Hello

B.

DPD

C.

Keepalive

D.

Echo

Question 59

In IPv4 network, AP supports static and DHCP to obtain IP address ()

Options:

A.

True

B.

False

Question 60

If during the PPP authentication process, the authenticatee sends the wrong user name and password to the authenticator, what type of message will the authenticator send to the authenticatee? ()

Options:

A.

Authenticate-Reject

B.

Authenticate-Ack

C.

Authenticate-Nak

D.

Authenticate-Reply

Question 61

On Huawei equipment, if AAA authentication is used for authorization, when the remote server does not respond, authorization can be performed from the network equipment side ()

Options:

A.

True

B.

False

Question 62

A network engineer prompts the following message when entering the command line: Error: UnrecognizeD.commanD.founD.at '^' position. Which of the prompt information is correct? ()

Options:

A.

The input command is incomplete

B.

Wrong parameter type

C.

Keyword not found

D.

The input command is ambiguous

Question 63

FIT AP does not need AC. It can also work independently ()

Options:

A.

True

B.

False

Question 64

Which of the following statements about direct routing is correct? ()

Options:

A.

Direct routing requires the administrator to manually configure the destination network and next hop address

B.

Direct routes have lower priority than static routes

C.

Direct routing has lower priority than dynamic routing

D.

Direct routing has the highest priority

Question 65

STA. The only way to discover the wireless network is the Beacom frame sent by the AP. ()

Options:

A.

True

B.

False

Question 66

Which of the following routing protocols has the highest priority?

Options:

A.

Direct

B.

C. Static

C.

D. OSPF

Question 67

The bridge ID of the STP protocol in the switching network is as follows. Which of the following bridge IDs will be the root bridge? ()

Options:

A.

409600-01-02-03-04-DD

B.

3276800-01-02-03-04-AA

C.

3276800-01-02-03-04-CC

D.

3276800-01-02-03-04-BB

Question 68

When two OSPF routers form a 2-WAY neighbor relationship, the LSDB. has been synchronized. ()

Options:

A.

True

B.

False

Question 69

Which of the following statements is correct? ()

Options:

A.

The router works at the physical layer

B.

The switch works at the physical layer

C.

The switch works at the network layer

D.

The router works at the network layer

Question 70

To ensure that the same data stream is forwarded on the same physical link, which load sharing method does Eth Trunk use?

Options:

A.

Load sharing based on data packet inbound interface

B.

Packet-based load sharing

C.

Load sharing based on application layer information

D.

Flow-based load sharing

Question 71

What is the total length of an IPv6 address in bits? ()

Options:

A.

96

B.

64

C.

32

D.

128

Question 72

Which of the following commands can be used to check the session status of the PPPoE client? ()

Options:

A.

display current configuration

B.

display pppoe-client session summary

C.

display ip interface brief

D.

display pppoe-client sessi on packet

Question 73

Which of the following protocols is OSPF based on?

Options:

A.

UDP

B.

HTTP

C.

TCP

D.

IP

Question 74

In the campus network, the reliability of the network can be improved by using link aggregation and stacking technology. ()

Options:

A.

True

B.

False

Question 75

What kind of packets does the OSPF protocol use to request LSAs that are missing locally? ()

Options:

A.

B. LSACK

B.

LSR

C.

D. LSU

Question 76

The Layer 2 networking of WLAN refers to STA. It uses AC as its own gateway. ()

Options:

A.

True

B.

False

Question 77

The load sharing mode at both ends of the Eth-Trunk can be inconsistent ()

Options:

A.

True

B.

False

Question 78

RADIUS is a common protocol to implement AAA.

Options:

A.

True

B.

False

Question 79

In order to realize the launch of FIT AP, FIT AP first needs to obtain the IP address of AC. Which of the following is not included in the way FITAP obtains the IP address of AC.? ()

Options:

A.

Broadcasting method

B.

Static designation method on AP

C.

Multicast mode

D.

DHCP Option mode

Question 80

Which parameter is used in the spanning tree protocol for root bridge election? ()

Options:

A.

Port ID

B.

Bridge priority

C.

Root path cost

D.

Bridge ID

Question 81

What is the range of VLAN ID that users can use? ()

Options:

A.

1-4096

B.

1-4094

C.

0-4096

D.

0-4095

Question 82

NAPT allows multiple private IP addresses to be mapped to the same public P address through different port numbers. The following description of the port number in NAPT is correct ().

Options:

A.

The correspondence between port numbers and private addresses must be manually configured

B.

No need to do any configuration about port number

C.

Only need to configure the range of port numbers

D.

Need to use ACL to assign port numbers

Question 83

The following description of the Layer 2 Ethernet switch is incorrect ().

Options:

A.

Need to make certain modifications to the layer 3 header of the forwarded message, and then forward it

B.

Able to learn MAC. Address

C.

Forward according to the Layer 2 header information of the Ethernet frame

D.

Layer 2 Ethernet switch works at the data link layer

Question 84

When Huawei switches allow STP, the priority of the switch by default is ()

Options:

A.

32768

B.

8192

C.

16384

D.

4096

Question 85

The FIT AP can obtain the IP address of AC. through the DHCP Option to establish a CAPWAP tunnel. Which Option needs to be configured on the DHCP server for this? ()

Options:

A.

Option 82

B.

B. Option 10

C.

C. Option 43

D.

D. Option 55

Question 86

When a switch receives a unicast data frame with a VLAN tag, but finds that the destination MAC address of the data frame cannot be queried in its MAC address table, the switch's processing behavior for the data frame is ().

Options:

A.

The switch will broadcast this data frame to all ports (except the receiving port) in the VLAN where the data frame is located

B.

The switch will broadcast the data frame to all ports

C.

The switch will discard this data frame

D.

The switch will broadcast this data frame to all Access ports

Question 87

By default, what is the period for sending 0SPF HELLO packets on the broadcast network? ()

Options:

A.

10s

B.

B. 20s

C.

C. 30s

D.

D. 40s

Question 88

OSPF Router ID. It must be the same as the IP address of an interface on the router.

Options:

A.

True

B.

False

Question 89

The mask length is 12 bits can be expressed as?

Options:

A.

255.240.0.0

B.

255.248.0.0

C.

255.255.0.0

D.

255.255.255.0

Question 90

Users cannot configure VLAN ID. to 0. ()

Options:

A.

True

B.

False

Question 91

SNMP messages are carried over UDP.

Options:

A.

True

B.

False

Question 92

What kind of message does the OSPF protocol use to confirm the received LSU message? ()

Options:

A.

LSU

B.

LSR

C.

LSACK

D.

LSA

Question 93

Which of the following descriptions about Trunk port and Access port are correct ()

Options:

A.

Trunk port can only send untagged frames

B.

The Access port can only send untagged.

C.

Access port can only send tagged frames

D.

Trunk port can only send tagged frame

Question 94

The following figure shows the routing table of a router. When the router receives a data packet with a destination IP address of 9.LL, the router will forward it according to the route of 91.0.016 because the mask length of this route is longer. ()

Options:

A.

True

B.

False

Question 95

After link authentication is completed, STA. will continue to initiate link service negotiation. Which of the following messages will be used to achieve the specific negotiation? ()

Options:

A.

Join

B.

Handshake

C.

Association

D.

Negotiate

Question 96

What is the value of the Type field in the RStp configuration BPDU message? ()

Options:

A.

0x01

B.

0x00

C.

0x02

D.

0x03

Question 97

The RSTP protocol uses the P/A mechanism to speed up the upstream port's transition to the Forwarding state, but what is the reason for no temporary loop? ()

Options:

A.

Speed ​​up port role election

B.

Ensure that there will be no temporary loops through the synchronization mechanism

C.

Edge port

D.

Reduced the time of ForwarD.Delay

Question 98

Can the administrator modify the device name for the router under ()?

Options:

A.

User-view

B.

Protocol-view

C.

System-view

D.

Interface-view

Question 99

As shown in the figure below, assuming that the MAC address table of SWA. is as follows, now host A. sends a data frame with a destination MAC address of MAC-B. Which of the following statements is correct? ()

Options:

A.

Forward this data according to the G0/0/2 port

B.

SWA. Discard the data frame

C.

D. Forward this data frame from port G0/0/3

Question 100

At what layer of the OSI reference model does a router operate? ( )

Options:

A.

Data link layer

B.

Transport layer

C.

Application layer

D.

Network layer

Question 101

Which of the following parameters is used in LCP negotiation to detect link loops and other abnormal conditions? ()

Options:

A.

MRU

B.

CHAP

C.

Magic word

D.

PAP

Question 102

What is the number range of advanced ACLs? ()

Options:

A.

3000-3999

B.

2000-2999

C.

4000~4999

D.

6000~6031

Question 103

VRP operating platform, which of the following commands can only view static routes? ()

Options:

A.

display ip routing-table statistics

B.

display ip routing-table verbose

C.

display ip routing-table

D.

display ip routing-table protocol static

Question 104

All ports on the root bridge switch are designated ports. ()

Options:

A.

True

B.

False

Question 105

SNMPv1 defines five protocol operations. ()

Options:

A.

True

B.

False

Question 106

There is no channel overlap in the 14 available frequency bands in the 2.4GHz frequency band. ()

Options:

A.

True

B.

False

Question 107

If the administrator wants to completely delete the old device configuration file, the following command is correct ().

Options:

A.

clear config.zip

B.

delete /unreserveD.config.zip

C.

delete /force config.zip

D.

reset config.zip

Question 108

The election of the root switch in STP only compares the priority of the switch, while in RSTP, the priority of the switch is compared with the MAC address at the same time. ()

Options:

A.

True

B.

False

Question 109

Which of the following descriptions of wireless devices is correct? ()

Options:

A.

The wireless controller AC is generally located at the convergence layer of the entire network, providing high-speed, safe and reliable VLAN services

B.

FIT AP generally independently completes user access, authentication, service forwarding and other functions

C.

FAT AP. Generally work with wireless controller

D.

The wireless device does not have a wired interface

Question 110

After the network administrator uses the Tracer tRoute function on the router device, in the data packet sent by the router, the value of the Protoco1 field in the IPv4 header is?

Options:

A.

17

B.

B. 2

C.

1

D.

D. 6

Question 111

The change of the Router ID of the OSPF process takes effect immediately.

Options:

A.

True

B.

False

Question 112

The IP addresses of the VLANIF interfaces of the same switch cannot be the same. ()

Options:

A.

True

B.

False

Question 113

AP does not need AC. It can independently complete the work of wireless user access, wireless user authentication, and business data forwarding.

Options:

A.

True

B.

False

Question 114

System-view (huawei) command-privilege level3 view user save is correct about the above configuration command ()

Options:

A.

Modify the user's authority level to 3, and save the configuration

B.

Modify the permission level of the user view command to 3, and save the configuration

C.

Modify the authority level of the save command used by a user to 3

D.

Modify the permission level of the save command in the user view to 3

Question 115

RTA. Uses NAT technology and realizes many-to-many NAPT address translation by defining an address pool, so that hosts in the private network can access the public network. Assuming that there are only two public network P addresses in the address pool, and they have been assigned to hosts A and B for address conversion, and at this time, if the host also wants to access the public network, the following description is correct ().

Options:

A.

HostC.Unable to assign a public network address, and cannot access the public network

B.

All hosts can access the public network by using the public network address in turn

C.

RTA. Convert the source port of host C., the host can access the public network

D.

RTA. Assign interface address (200.10.10.3) to host C. Host C can access the public network

Question 116

The administrator plans to implement route backup by configuring static floating routes, the correct way to achieve this is ().

Options:

A.

The administrator needs to configure different protocol priority values ​​for the main static route and the standby static route

B.

B. The administrator only needs to configure two static routes

C.

The administrator needs to configure different metric values ​​for the main static route and the standby static route. The administrator only needs to configure two static routes

D.

D. The administrator only needs to configure two static routes

Question 117

After a switch restarts, static MAC address entries saved on the switch remain in the MAC address table.

Options:

A.

TRUE

B.

FALSE

Question 118

Which of the following is the default port number of the Telnet server?

Options:

A.

22

B.

24

C.

21

D.

23

Question 119

What is used as the data link-layer MAC address that identifies each VAP on an AP?

Options:

A.

BSS

B.

SSID

C.

BSSID

D.

ESS

Question 120

Assuming that OSPF has been enabled on all routers in the following figure, which router is the BDR on this network?

Options:

A.

Router B

B.

Router A

C.

Router D

D.

Router C

Question 121

UDP does not guarantee data transmission reliability and does not provide packet sorting and traffic control functions. It is suitable for the traffic that has low requirements for data transmission reliability, but high requirements for the transmission speed and delay.

Options:

A.

TRUE

B.

FALSE

Question 122

When two switches are connected through link aggregation, what are the requirements for the interfaces on the two switches?

Options:

A.

The physical interface rates of the interconnected switches are the same.

B.

The physical interface quantities of the interconnected switches are the same.

C.

The models of the optical modules used by the interconnected switches are the same.

D.

The duplex modes of the physical interfaces on the interconnected switches are the same.

E.

The physical interface IDs of the interconnected switches are the same.

Question 123

Which of the following VRP commands can be used to enter area 0 view?

Options:

A.

[Huawei-ospf-1] area 0.0.0.0

B.

[Huawei-ospf-1] area 0 enable

C.

[Huawei-ospf-1] area 0

D.

[Huawei] ospf area 0

Question 124

In RSTP mode, both alternate and backup ports cannot forward user traffic and cannot receive, process, and send BPDU.

Options:

A.

TRUE

B.

FALSE

Question 125

The TCP protocol uses the three-way handshake mechanism to establish and disable connections. Therefore, TCP supports reliable data transmission.

Options:

A.

TRUE

B.

FALSE

Question 126

What is the number range of an advanced ACL?

Options:

A.

2000-2999

B.

3000-3999

C.

6000-6031

D.

4000-4999

Question 127

An ACL is essentially a packet filter. An ACL takes effect only after it is applied to a service module.

Options:

A.

TRUE

B.

FALSE

Question 128

Which of the following parameters is used to elect the root bridge in STP?

Options:

A.

Bridge ID

B.

System name of the switch

C.

Port ID

D.

Root path cost

Question 129

Only one SSID can be bound to each radio of an AP.

Options:

A.

TRUE

B.

FALSE

Question 130

Assuming all STP enabled switches have the same bridge priority. The MAC address of switch A is 00-e0-fc-00-00-40, the MAC address of switch B is 00-e0-fc-00-00-10, the MAC address of switch C is 00-e0-fc-00-00-20, and the MAC address of switch D is 00-e0-fc-00-00-80. Which switch will be elected as the root switch?

Options:

A.

Switch B

B.

Switch A

C.

Switch D

D.

Switch C

Question 131

On the network shown in the figure, host A logs in to router A through Telnet and obtains the configuration file of router B through FTP on the remote CLI. How many TCP connections exist on router A?

Options:

A.

1

B.

3

C.

4

D.

2

Question 132

Which of the following packets are OSPF packets?

Options:

A.

LSA

B.

HELLO

C.

LSR

D.

LSU

Question 133

If the transport-layer protocol is UDP, the value of the "Protocol" field at the network layer is 6.

Options:

A.

TRUE

B.

FALSE

Question 134

The data link layer uses PPP encapsulation. The IP addresses of the two ends of the link can be in different network segments.

Options:

A.

TRUE

B.

FALSE

Question 135

When a switch receives a unicast data frame, if the destination MAC address of the data frame can be found in the MAC address table of the switch, the data frame is definitely forwarded through the port corresponding to the MAC address.

Options:

A.

TRUE

B.

FALSE

Question 136

If Proto of a route displayed in the routing table is OSPF, the preference of the route must be 10.

Options:

A.

TRUE

B.

FALSE

Question 137

After an Eth-Trunk in LACP mode is created, devices on both ends send LACPDUs to elect the Actor. Which of the following parameters in LACPDUs determine the Actor election?

Options:

A.

Device priority

B.

Interface number

C.

MAC address

D.

Interface priority

Question 138

The IP address 192.168.1.127/25 represents a ( ) address.

Options:

A.

Broadcast

B.

Multicast

C.

Host

D.

Network

Question 139

As shown in the figure, which of the following ports will be in blocking state?

Options:

A.

G0/0/3 of SWA

B.

G0/0/3 of SWB

C.

G0/0/2 of SWC

D.

G0/0/1 of SWC

Question 140

With SNMP, an NMS can only display the device running status but cannot deliver configurations.

Options:

A.

TRUE

B.

FALSE

Question 141

Which of the following WLAN security policies support open link authentication?

Options:

A.

WPA2-PSK

B.

WPA

C.

WEP

D.

WPA2-802.1X

Question 142

A Layer 2 ACL can match information such as the source MAC address, destination MAC address, source IP address, and destination IP address.

Options:

A.

TRUE

B.

FALSE

Question 143

Which of the following packets are exchanged between STAs and an AP to obtain the AP's SSID before association with the AP?

Options:

A.

Probe Request

B.

Discovery

C.

Probe Response

D.

Beacon

Question 144

Which of the following port states are included in Rapid Spanning Tree Protocol (RSTP)?

Options:

A.

Discarding

B.

Forwarding

C.

Learning

D.

Listening

Question 145

According to the one-armed routing configurations shown in the figure, even if ARP proxy is disabled on the sub-interface of R1, the Administration Dept and Finance Dept can still communicate with each other.

Options:

A.

TRUE

B.

FALSE

Question 146

Which of the following statements about the routing table shown in the figure are true?

Options:

A.

The local router forwards data packets destined for 10.0.2.2 from Ethernet0/0/0.

B.

The next hop in the route to the destination network 10.0.3.3/32 is not directly connected. Therefore, the local router does not forward data packets destined for 10.0.3.3.

C.

The local router forwards data packets destined for 10.0.12.1 from Ethernet0/0/0.

D.

The local router forwards data packets destined for 10.0.3.3 from Ethernet0/0/0.

Question 147

telnetlib is a module provided by Python to implement the Telnet protocol.

Options:

A.

TRUE

B.

FALSE

Question 148

On the VRP platform, which of the following parameters can be used together with the "ping" command to specify the source address of an echo request message?

Options:

A.

-d

B.

-n

C.

-a

D.

-s

Question 149

In a broadcast address, all host bits are set to 1, and a broadcast address can be used as a host address.

Options:

A.

TRUE

B.

FALSE

Question 150

When a host uses the stateless address autoconfiguration solution to obtain an IPv6 address, the host cannot obtain the DNS server address.

Options:

A.

TRUE

B.

FALSE

Question 151

TION NO: 58

If the MAC address of an interface is 00E0-FCEF-0FEC, the corresponding EUI-64 address is ( ).

Options:

A.

02E0-FCFF-FEEF-0FEC

B.

02E0-FCEF-FFFE-0FEC

C.

00E0-FCEF-FFFE-0FEC

D.

00E0-FCFF-FEEF-0FEC

Question 152

Which of the following states indicates that the OSPF neighbor relationship has been established?

Options:

A.

Attempt

B.

Down

C.

Full

D.

2-way

Question 153

TION NO: 29

For an Eth-Trunk in LACP mode, what is the default LACP system priority of a Huawei switch?

Options:

A.

4096

B.

36864

C.

32768

D.

24576

Question 154

For the Versatile Routing Platform (VRP), the login timeout period can be set only on a VTY interface.

Options:

A.

TRUE

B.

FALSE

Question 155

On a Layer 2 WLAN, STAs use an AC as their gateway.

Options:

A.

TRUE

B.

FALSE

Question 156

Refer to the graphic, 00e0-fc99-9999 is a specific host MAC address learned by a switch through ARP, and the host changes the IP address three times.

Options:

A.

TRUE

B.

FALSE

Question 157

Which of the following statements is true about the Forward Delay timer of STP?

Options:

A.

Reduce the interval for sending BPDUs.

B.

Improve the STP convergence speed.

C.

Improve the configuration BPDU lifetime, ensuring that the configuration BPDUs can be forwarded to more switches.

D.

Prevent temporary loops.

E.

Delay is required when a port transitions between Blocking and Disabled.

Question 158

The router that runs OSPF first enters the Full state and then synchronizes the LSDB.

Options:

A.

TRUE

B.

FALSE

Question 159

Which of the following statements is true about link aggregation in manual load balancing mode?

Options:

A.

A maximum of four active interfaces can be configured in manual load balancing mode.

B.

In manual load balancing mode, devices at both ends of a link send LACPDUs to each other.

C.

In manual load balancing mode, all active interfaces forward data and load balance traffic.

D.

The number of active interfaces can be set in manual load balancing mode.

Question 160

If a device running STP receives an RSTP configuration BPDU, it discards the BPDU.

Options:

A.

TRUE

B.

FALSE

Question 161

Network devices running SNMP can proactively report traps to help network administrators detect faults in a timely manner.

Options:

A.

TRUE

B.

FALSE

Question 162

Which of the following information is displayed when an entered command is incomplete on the Versatile Routing Platform (VRP)?

Options:

A.

Error: Wrong parameter found at 'A' position

B.

Error: Incomplete command found at 'A' position

C.

Error: Too many parameters found at 'A' position

D.

Error: Ambiguous command found at 'A' position

Question 163

Which of the following statements about the network shown in the figure is true?

Options:

A.

The sub-interface of Router B cannot learn the MAC address of the sub-interface of Router A.

B.

The sub-interface of Router A cannot learn the MAC address of the sub-interface of Router B.

C.

The sub-interface numbers of Router A and Router B are different, so Router A and Router B cannot communicate with each other.

D.

The host at 10.0.12.1 can ping the host at 10.0.12.2.

Question 164

Which of the following descriptions regarding the TTL field of the IP packet is correct?

Options:

A.

The TTL value will decrement by 1 each time the packet is routed.

B.

The TTL defines the duration during which the source can send packets.

C.

The TTL defines how many packets the source can send.

D.

The TTL value will increment by 1 each time the packet is routed.

Question 165

Which of the following are valid static route configurations?

Options:

A.

ip route-static 129.1.0.0 16 serial 0/0/0

B.

ip route-static 129.1.0.0 255.255.0.0 10.0.0.2

C.

ip route-static 10.0.0.2 16 129.1.0.0

D.

ip route-static 129.1.0.0 16 10.0.0.2

Question 166

Refer to the following configuration of a switch interface. Which of the following statements is false?

interface GigabitEthernet0/0/1

port link-type trunk

port trunk pvid vlan 200

port trunk allow-pass vlan 100

Options:

A.

If the VLAN tag carried in a data frame is 100, the switch removes the VLAN tag before sending the data frame.

B.

If the interface receives data frames without VLAN tags, the switch needs to tag the data frames with VLAN 200.

C.

The interface cannot send data frames tagged with VLAN 200.

D.

The link type of the interface is trunk.

Question 167

Which of the following network parameters can be allocated using DHCP?

Options:

A.

Address of the DNS server

B.

Operating system

C.

Gateway address

D.

IP address

Question 168

Which SNMP version focuses on two main aspects, namely security and administration. The security aspect is addressed by offering both strong authentication and data encryption for privacy. The administration aspect is focused on two parts, namely notification originators and proxy forwarders.

Options:

A.

SNMPv2c

B.

SNMPv1

C.

SNMPv3

D.

SNMPv2

Question 169

Which of the following fields are contained in an ARP packet?

Options:

A.

Source Protocol Address

B.

Source Hardware Address

C.

Hardware Type

D.

Operation Code

Question 170

As shown in the figure, RTA uses NAT and has an address pool configured to implement many-to-many non-NAPT address translation, so that hosts on the private network can access the public network. Assume that the address pool has only two public IP addresses, which are translated for Host A and Host B. If Host C wants to access the public network, which of the following statements is true?

Options:

A.

All hosts use public IP addresses in turn and can access the public network.

B.

No public IP address is assigned to Host C, and Host C cannot access the public network.

C.

RTA performs NAT based on the source port number of Host C, and Host C can access the public network.

D.

RTA assigns an interface address (200.10.10.3) to Host C, and Host C can access the public network.

Question 171

As shown in the figure, all switches run STP. Assume that the path cost of all ports is 200. What is the root path cost contained in the configuration BPDU received by G0/0/4 on SWD?

Options:

A.

200

B.

600

C.

400

D.

0

Question 172

Which statement is true regarding the following command?

ip route-static 10.0.12.0 255.255.255.0 192.168.1.1

Options:

A.

The configuration represents a static route to the 10.0.12.0 network.

B.

The configuration represents a static route to the 192.168.1.1 network.

C.

If the router has learned the same destination network via a dynamic routing protocol, the static route will always take precedence.

D.

The preference value of this configured route is 100.

Question 173

When the ACL in the following figure is configured on a Telnet server, only the device with an IP address of 172.16.105.2 can remotely log in to the Telnet server.

bash

Copy code

acl number 2000

rule 5 permit source 172.16.105.2 0

Options:

A.

TRUE

B.

FALSE

Question 174

If the IPv4 address of a host on a LAN is 192.168.1.1/30, the host will process IP packets with specific destination IP addresses. Which of the following IP addresses may be the destination IP addresses?

Options:

A.

192.168.1.3

B.

192.168.1.1

C.

192.168.1.2

D.

255.255.255.255

Question 175

On Huawei ARG3 routers, the -i parameter of the Ping command in VRP is used to set ().

Options:

A.

Destination IP address for receiving Echo Reply reply

B.

The source IP address of the Echo Request message

C.

Interface for receiving Echo Reply messages

D.

Interface for sending Echo Request messages

Question 176

Which of the following advantages does the single-arm routing approach achieve inter-VLAN routing and intercommunication? ()

Options:

A.

B. Reduce the use of IP addresses

B.

Reduce the number of link connections

C.

D. Reduce routing table entries

Question 177

When planning a campus network, which of the following methods can be used to divide service VLANs? ()

Options:

A.

VLAN by business

B.

C. Divide VLAN by logical area

C.

D. Divide VLAN into J by geographical area

Question 178

The following two configuration commands can realize the router RTA. The main and backup backup routes to the same destination 10.1.1.0: ()

(RTA)ip route--statiC.10.1.1.02412.1.1.1 permanent(RTA)ip route--statiC.10.2.2.02413.1.1.1.

Options:

A.

True

B.

False

Question 179

What is the main function of the dynamic routing protocol? ()

Options:

A.

B. Generate IP address

B.

Dynamically generate routing entries

C.

D. Control router interface status

Question 180

The correct statement about the transport layer protocol is ()

Options:

A.

UDP is suitable for the transmission of delay-sensitive traffic, and can be reorganized according to the sequence number field in the message header

B.

Well-known port number range is 0-1023

C.

UDP uses the STNOACK flag to request and confirm the establishment of a connection

D.

The establishment of a TCP connection is a three-way handshake, and the termination of a TCP connection requires a four-way handshake.

Question 181

After FIT AP obtains AC.'s IP address, what is the first operation to perform? ()

Options:

A.

B. Upgrade software version

B.

Establish a CAPTAP tunnel

C.

D. Request configuration file

Question 182

During data access, when accessing different network segments, the destination MAC. Encapsulate the MAC address of the gateway on the source host

Options:

A.

True

B.

False

Question 183

In the VRP interface, use the command delete vrpcfg.zip to delete a file. The file must be emptied in the recycle bin to completely delete the file. ()

Options:

A.

True

B.

False

Question 184

The link aggregation interface can only be used as a Layer 2 interface ()

Options:

A.

True

B.

False

Question 185

Which of the following statements about the edge port in the RSTP protocol is correct? ()

Options:

A.

The edge port discards the received configuration BPDU packet

B.

The edge port can be directly transferred to the Forwarding state from Disable

C.

Edge port participates in RSTP operation

D.

The interconnection ports between switches need to be set as edge ports

Question 186

If the largest number in an ACL rule is 12, by default, the user does not specify a number when configuring a new rule, then the number assigned to the new rule by the system is? ()

Options:

A.

15

B.

14

C.

D. 16

Question 187

Among the following commands for configuring the default route, the correct one is ()

Options:

A.

(Huawei) ip route-statiC.0.0.0.0 0.0.0.0 192.168.1.1

B.

(Huawei) ip route-statiC.0.0.0.0 0.0.0.0 0.0.0.0

C.

D. (Huawei) ip route-statiC.0.0.0.0 255.255.255.255192.168.1.1

Question 188

PPPoE sessions can only use CHAP authentication ()

Options:

A.

True

B.

False

Question 189

When building a campus network, which of the following protocols can be used to avoid Layer 2 loops? ()

Options:

A.

RSTP

B.

C. NAT

C.

D. OSPF

Question 190

When deploying ACL on Huawei equipment, which of the following descriptions is correct is ()

Options:

A.

When calling ACL under the interface, it can only be applied to the outbound direction

B.

ACL can match the TCP/UDP port number of the packet, and can specify the range of port numbers

C.

ACL cannot be used to filter OSPF traffic, because COSPF traffic does not use UDP protocol encapsulation

D.

The same ACL can be called under multiple interfaces

E.

E. When ACL defines rules, it can only proceed in the order of 10, 20, 30

Question 191

By default, what is the ForwarD.Delay time of the STP protocol in seconds? ()

Options:

A.

B. 10

B.

15

C.

D. 20

Question 192

The administrator hopes that RTA. uses static routing and preferentially sends data packets to RTB's Loopback0 interface through G0/0/1 port, while G0/0/2 is used as a backup. How to configure on RTA to achieve this requirement ()

Options:

A.

ip route-statiC.10.0.2.2255.255.255.255 10.0.12.2ip

Route-statiC.10.0.2.2255.n255.255.255 10.0.21.2 preference 40

B.

ip route-statiC.10.0.2.2255.255.255.25 5 10.0.12.2 preference 70 ip route-static/n10.0.2.2255.255.255.25510.0.21.2

C.

ip route-statiC.10.0.2.2255.255.255.255 10.0.12.2ip

Route-statiC.10.0.2.2255.255.n255.25510.0.21.2

D.

ip route-statiC.10.0.2.2255.255.255.25510.0.12.2ip

Route-statiC.10.0.2.2255.n255.255.255

Question 193

The correct setting of the terminal emulation program when configuring the router through the Console ()

Options:

A.

B. 9600bps, 8 data bits, 1 stop bit, even parity and hardware flow control

B.

9600bps, 8 data bits, 1 stop bit, no checksum and no flow control

C.

D. 4800bps, s data bit, 1 stop bit, odd checksum and no flow control

Question 194

There are multiple route entries to the same destination network in the routing table. These routes are called? ()

Options:

A.

Equal cost routing

B.

B. Multipath routing

C.

Default route

D.

D. Suboptimal routing

Question 195

The subnet mask of a network segment 150.25.0.0 is 255.255.224.0, then () is a valid host address in this network segment. ()

Options:

A.

150.25.2.24

B.

B. 150.25.0.0

C.

C. 150.25.1.255

D.

D. 150.15.3.30

Question 196

The host's IPv4 address is 200.200.200.201/30. Which of the following hosts has an IPv4 address and its communication does not need to be forwarded by a router? ()

Options:

A.

200.200.200.202

B.

B. 200.200.200.200

C.

C. 200.200.200.203

D.

D. 200.200.200.1

Question 197

By default, the port cost calculated by STP has a certain relationship with the port bandwidth, that is, the larger the bandwidth, the higher the cost ()

Options:

A.

Big

B.

Unanimous

C.

uncertain

D.

small

Question 198

The second layer switch belongs to the data link layer device, which can identify the MAC address information in the data frame, forward data according to the MAC address, and record these MAC addresses and corresponding port information in its own MAC address table. ()

Options:

A.

True

B.

False

Question 199

What is the total length of the VLAN frame format defined by IEEE802.1Q? ()

Options:

A.

1

B.

2

C.

3

D.

4

Question 200

192.168.1.127/25 represents () address ()

Options:

A.

broadcast

B.

B. Multicast

C.

The internet

D.

D. Host

Question 201

If the Proto of a certain route information in the routing table is OSPF, the priority of this route must be 10. ()

Options:

A.

True

B.

False

Question 202

STA. Before associating to AP, it needs to obtain SSID through some message exchange. What are these messages? ()

Options:

A.

Discovery

B.

Beacon

C.

Probe

D.

ResponseProbe Request

Question 203

The network administrator hopes to be able to effectively use the P address of the 192.168.176.0/25 network segment. Now that the company’s marketing department has 20 hosts, which of the following address segments is best allocated to the marketing department? ()

Options:

A.

192.168.176.160/27

B.

B. 192.168.176.0/25

C.

192.168.176.96/27

D.

D. 192.168.176.48/29

Question 204

If the network address of a network is 192.168.1.0, then its broadcast address must be 192.168.1.255. ()

Options:

A.

True

B.

False

Question 205

For switches running the STP protocol, the port needs to wait for the forwarding delay in the Learning state to transform into the Forwarding state. ()

Options:

A.

True

B.

False

Question 206

On the broadcast network, both DR and BDR use the multicast address 224.0.0.6 to receive link state update messages ()

Options:

A.

True

B.

False

Question 207

The switch is connected to the host. What is the common port link type of the switch? ()

Options:

A.

Access link

B.

Trunk link

C.

C. Trunk link

D.

D. HybriD. link

Question 208

The DHCP request message is sent by broadcast

Options:

A.

True

B.

False

Question 209

If host A. has the ARP cache of host B., host A. can ping host B. ()

Options:

A.

True

B.

False

Question 210

Which of the following statements about MPLS Labe1 labels is wrong? ()

Options:

A.

The label is encapsulated between the network layer and the transport layer

B.

The label is carried by the header of the message and does not contain the topologyinformation.

C.

The label is used to uniquely identify the forwarding equivalence class FEC to which a packet belongs

D.

The tag is a short identifier with a fixed length. It only has a local meaning

Question 211

What are the characteristics of VLAN based on ports? ()

Options:

A.

Add an AVLAN tag to the data frame according to the IP address carried in the message

B.

B. Assign VLAN ID according to the protocol type and encapsulation format of the data frame

C.

C. No need to reconfigure VLAN when the host moves

D.

When the host moves, the VLAN needs to be reconfigured

Question 212

Which of the following OSCan PF protocol packets ensure the reliability of LSA update? ()

Options:

A.

LSACK

B.

B. DD

C.

LSU

D.

D. LSR

Question 213

The broadcast address is a special address that all the host bits in the network address are set to, and it can also be used as a host address. ()

Options:

A.

True

B.

False

Question 214

LACP protocol priority, switch A. and switch B. adopt LACP mode link aggregation, and all interfaces join the link aggregation group, and set the maximum number of active ports to 3, then which interface of switch A is not an active port? ()

Options:

A.

G0/0/3

B.

G0/0/0

C.

D. G0/0/2

Question 215

The IPv6 address 2001: ABEF:2240E:FFE2:BCC0:CD0:DDBE:8D58 cannot be abbreviated. ()

Options:

A.

True

B.

False

Question 216

Which information of the data frame is used by the VLANIF interface to determine whether to perform Layer 2 or Layer 3 forwarding? ()

Options:

A.

Destination MAC

B.

B. Source MAC

C.

C. Destination port

D.

D. Source IP

Question 217

Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ().

Options:

A.

Neighbor

B.

Network Mask

C.

HelloInterval

D.

Sysname

Question 218

The following statement about the TTL field in the IP packet header is correct. ()

Options:

A.

TTL defines the time interval at which the source host can send data packets

B.

B. TTL defines the number of packets that the source host can send

C.

Each time a P packet passes through a router, its TTL value will be reduced by 1

D.

Each time an IP packet passes through a router, its TTL value is increased by 1

Question 219

The transport layer protocol has UDP and TCP, but UDP is more reliable than TCP

Options:

A.

True

B.

False

Question 220

Which of the following fields is not included in the He1lo packet of the OSPF protocol? ()

Options:

A.

sysname

B.

C. HelloInterval

C.

D. Neighbor

Question 221

In order to implement FIT AP online, FIT AP first needs to obtain the IP address of AC. Which of the following options is not included in FITAP obtaining the IP address of AC. ()

Options:

A.

DHCP option mode

B.

Static designation method on AP

C.

Broadcasting method

D.

Multicast mode

Question 222

Which layer of protocol does ARP belong to

Options:

A.

data link layer

B.

B. Network layer

C.

C. Physical layer

D.

D. Transport layer

Question 223

Static NAT can only achieve one-to-one mapping between private addresses and public addresses ()

Options:

A.

True

B.

False

Question 224

The two ends of the PPP link are not in the same network segment and cannot communicate

Options:

A.

True

B.

False

Question 225

The tracert diagnostic tool in Huawei routers is used to track the data forwarding path. ()

Options:

A.

True

B.

False

Question 226

The router needs to modify the destination IP address in the data packet when forwarding the data packet ()

Options:

A.

True

B.

False

Question 227

Basic ACL number value range ().

Options:

A.

2000-2999

B.

B. 1000-1999

C.

C. 3000-3999

D.

D. 4000-4999

Question 228

Trunk ports can allow multiple VLANs to pass, including VLAN4096. ()

Options:

A.

True

B.

False

Question 229

DHCP is an application layer protocol. In order to make it more reliable when assigning P, its transport layer uses TCP protocol.

Options:

A.

True

B.

False

Question 230

The following statement about the HybriD. port is correct ()

Options:

A.

B. The HybriD. port only receives data frames with VLAN TAG

B.

The HybriD port can strip off the TAG of some VLANs in the direction of the outbound interface

C.

D. HybriD. Port does not require PVID

Question 231

What is correct about the SNMP protocol? ()

Options:

A.

SNMP protocol uses multicast to send management messages

B.

B. The SNMP protocol only supports sending management messages on the Ethernet link

C.

SNMP uses ICMP as the network layer protocol

D.

SNMP uses UDP as the transport layer protocol

Question 232

Layer 2 ACL can match source MAC, destination MAC, source IP, destination IP and other information. ()

Options:

A.

True

B.

False

Question 233

The network management system can only view the operating status of the device through the SNMP protocol, but cannot issue the configuration ()

Options:

A.

True

B.

False

Question 234

The network administrator has captured a data frame on the network, and its destination MAC address is 01-00-5E-A0-B1-C3. The correct statement about the MAC. address is ().

Options:

A.

It is a multicast MAC. address

B.

B. It is a unicast MAC. address

C.

C. It is a broadcast MAC. address

D.

D. It is an illegal MAC. address

Question 235

What is the priority value of the direct route entry? ()

Options:

A.

0

B.

B. 30

C.

C. 10

D.

D. 20

Question 236

The two switches shown in the figure below have both enabled the STP protocol. Which port will eventually be in the Blocking state? ()

Options:

A.

SWA's G0/0/3 port

B.

SWA's G0/0/2 port

C.

G0/0/2 port of SWB

D.

G0/0/3 port of SWB

Question 237

In the network shown in the figure below, when the 0$PF neighbor status is stable. What is the neighbor status of Router B and Router C?

Options:

A.

2-way

B.

C. Attempt

C.

D. Down

Question 238

The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)

Options:

A.

The MAC address 5489-9811-0b49 is manually configured by the administrator

B.

B. The MAC address 5489-989d-1d30 is manually configured by the administrator

C.

After the switch restarts, all MAC addresses need to be relearned. The MAC address 5489-9885-18a8 is manually configured by the administrator

D.

The MAC address 5489-9885-18a8 is manually configured by the administrator

Question 239

The two switches shown in the figure below have both enabled the STP protocol, which port will eventually be in the Blocking state? ()

Options:

A.

STB's G0/0/3 port

B.

C. G0/0/2 port of STA

C.

D. G0/0/3 port of STA

Question 240

Which of the following IEEE802.11 standards does not support the 5GHz frequency band for communication? ()

Options:

A.

802.11g

B.

B. 802.11aC.wave 2

C.

C. 802.11aC.wave 1

D.

D. 802.11n

Question 241

How to deal with the data frame sent by the Trunki port? ()

Options:

A.

When the VLAN ID. is the same as the PVID of the port and is a VLAN ID that the port allows to pass through, remove the Tag and send the message

B.

When the VLAN ID is different from the PVID of the port, the data frame is discarded

C.

When the VLAN ID. is different from the PVID of the port, replace it with PVID. Forward

D.

When the VLAN ID. is different from the PVID of Jingkou, the TAG is stripped and forwarded

Question 242

Which category does the IPv6 address FE80:2E0:FCFF:FE6F:4F36 belong to? ()

Options:

A.

Link local address

B.

C. Global semicast address

C.

D. Anycast address

Question 243

The network shown in the figure below. All routers run OSPF. The link cost value is shown in the figure. What is the cost value of the route entry to the network 10.0.0.0/8 in the RTA routing table? () (Single-choice question)

Options:

A.

100

B.

70

C.

20

D.

60

Question 244

In order to distinguish between different users and provide different network services on the AP. Which of the following can be configured through configuration? ()

Options:

A.

VT

B.

B. VAP

C.

VAC

D.

D. WAP

Question 245

What is the corresponding Solicited.-node multicast address for IPv6 iAilt2019::8:AB.? ()

Options:

A.

FF02:1:FF20:19

B.

FF02:1:FE08:AB

C.

FF02:FF08:AB

D.

FF02:1:FF08:AB

Question 246

Refer to the configuration of the single-arm routing in the figure below, you can judge that even if the ARP proxy is not enabled on the sub-interface of R1,The administrative department and the financial department can also visit each other. ()(True or False)

Options:

A.

True

B.

False

Question 247

Which of the following is not included in AAA? ()

Options:

A.

Audit

B.

B. Authentication

C.

C. Authorization

D.

D. Accounting)

Question 248

In the network shown in the figure below, switch A and router A are connected by two links, and the two links are aggregated in manual load sharing mode. The aggregated port number is 1, and the aggregated link performs data forwarding It needs to carry VLAN TAG100, and switch A uses trunk link. Which of the following configurations should be used for switch A? ()

Options:

A.

interface Eth-Trunk 1

Port link-type trunk

Port trunk allow-pass vlan 100#

Interface GigabitEthernet0/0/1Eth-trunk 1

#

Interface GigabitEthernet0/0/2Eth-trunk 1

#

B.

interface Vlanif 100

Ip address10.0.12.1255.255.255.0

#

C.

interface Eth-Trunk 1

Ip address10.0.12.1255.255.255.0#

D.

interface Eth-Trunk 1

Mode lacp-static

Port link-type trunk

Port trunk allow-pass vlan 100#

Interface GigabitEthernet0/0/1Eth-trunk 1

#

Interface GigabitEthernet0/0/2Eth-trunk 1

#

Question 249

As shown in the figure below, all hosts can communicate normally. Is the correspondence between the MAC address and the port in the MAC address table of SWB correct? () (Single-choice question)

Options:

A.

MAC-A GO/0/1

MAC-B GO/0/2

MAC-C GO/0/3

B.

MAC-A GO/0/2

MAC-B G0/0/2

MAC-C GO/0/3

C.

MAC-A GO/0/3

MAC-B GO/0/3

MAC-C GO/0/1

D.

MAC-A GO/0/1

MAC-B GO/0/1

MAC-C GO/0/3

Question 250

In the network as shown in the figure below, host A logs in to router A through Telnet. Then obtains the configuration file of router B through FTP on the remote interface. At this time, how many TCP connections does router A have? () (Single-choice question)

Options:

A.

B. 1

B.

C. 3

C.

D. 2

Question 251

As shown in the figure, when the switch needs to forward frames with the destination mac address of 5489-98ec-f011, which of the following descriptions is correct? () (Single-choice question)

Options:

A.

The switch will send a message that the destination is unreachable to the source device

B.

The switch did not find a matching entry in the mac address table. So the frame will be discarded

C.

The switch needs to send a request to discover the device with the mac address of 5489-98ec-f011

D.

The switch will be All ports outside flood the frame

Question 252

All ports on the root bridge exchange machine are designated ends ()

Options:

A.

True

B.

False

Question 253

Two switches use manual link aggregation at the same time. The following statement is wrong. () (Single-choice question)

Options:

A.

Only switch off G0/0/2 port on switch B. The Eth-Trunk status is still UP

B.

Turn off the G0/0/1 and G0/0/2 ports on switch B, and the Efh-Trunk status is still UP

C.

C. Only switch off G0/0/1 port on switch B. The Eth-Trunk status is still UP

D.

D. Turn off the G0/0/1 and G0/0/2 ports on switch B. The Eth-Trunk status is down

Question 254

As shown in the figure, host A and host B want to implement inter-VLAN communication through single-arm routing. What configuration should be done under the G0/0/1.1 interface of RTA?()(Single-choice question)

Options:

A.

dotlq termination vid 10

B.

C. dotlq termination vid 20

C.

D. dotlq termination vid 30

Question 255

Which of the following methods can read data non-blocking in Python's telnetliB.? ()

Options:

A.

B. telnet_read_very_lazy

B.

telnet._read_eager

C.

D. telnet_reaD._very_eager

Question 256

The vty distribution responsibility is shown in the figure, and the user authority level is set to level 3. ()

[Huavei]user-interface vty o 14 Huavei-ul-vtyo-14acl 200o inbound Huavei-ui-vtyo-14Juser privilegelevel 3 [Huavei-ui-vtyo-14]authentication-node passworD.Please Configure the login passvord (maxiu length 16): huavei

Options:

A.

True

B.

False

Question 257

If the network address of a network is 10.1.1.0/30, what is its broadcast address? ()

Options:

A.

10.1.1.3

B.

C. 10.1.1.4

C.

D. 10.1.1.1

Question 258

Which statement about the 0SPF protocol DR is correct? ()

Options:

A.

DR must be the highest priority device in the network

B.

Router ID, the larger the value, the more preferred it is to be elected as DR

C.

DR election is preemptive

D.

An interface priority is 0, then the interface cannot be a DR

Question 259

Network as shown in the picture. The administrator hopes that all hosts cannot access the Web service (the port number is 80). Other services can be accessed normally. In the interface configuration of G0/0/1, which ACL rule needs to be bound to trattie-frilter outbound?

Options:

A.

rule 5 permit ip

ARule 10 deny top destination-port eq ww#

B.

acl number 3003

Rule 5 permit ip

Rule 10 deny udp destination-port eq ww#

C.

acl number 3001

Rule 5 deny udp destination-port eq ww

Rule 10 permit ip

#

D.

acl number 3000

Rule 5 deny tcp destination-port eq www Rule 10 permit ip

#

Question 260

In the figure below, all switches have enabled the STP protocol, assuming that the path cost value of all ports is 200. What is the root path cost value contained in the configuration BPDU message received by the G0/0/4 port of $WD? () (Single-choice question)

Options:

A.

600

B.

200

C.

0

D.

400

Question 261

The following rules exist in an ACL of a router. Rule deny top source192.168, 1.00.0.0.255 destination 172.16.10.1 0.0.0.0 destination-port eq 21 is the correct statement? ()

Options:

A.

sourceIP is 192.168.1.1, destination P is 172.16.10.1, and all TCP packets with destination port number 21 match this rule

B.

The source IP is 192.168.1.1, the destination IP is 172.16.10.2, and all 1CP packets whose destination port number is 21 match this rule

C.

Rule sourceIP is 192.168.1.1, the destination IP is 72.16.10.3, and all TCP packets with the destination port number of 21 match this rule

D.

D. The type of ACL is basic ACL

Question 262

Which of the following 0SPF protocol packets can ensure the reliability of LSA update? ()

Options:

A.

LSACK

B.

C. LSR

C.

D. DD

Question 263

Use the ACL shown in the figure on the router RTA to match routing entries. Then which of the following entries will be matched?

(RTA) acl 2002

(RTA-acl-basic-2002) rule deny source 172.16.1.1 0.0.0.0

(RTA-acl-basic-2002) rule deny source 172.16.0.0 0.255.0.0

Options:

A.

172.18.0.0/16

B.

B. 172.16.1.0/24

C.

192.17.0.0/24

D.

D. 172.16.1.1/24

Question 264

Which of the following statements about Prefix Segment is wrong? ()

Options:

A.

Prefix Segment spreads to other network elements through the IGP protocol, which is globally visible and effective

B.

B. Prefix Segment needs to be configured manually

C.

Prefix Segment is used to identify a destination address prefix in the network (Prefix)

D.

Prefix Segment can be automatically allocated by IGP

Question 265

What is the destination IP address of the DHCP DISCOER message? ()

Options:

A.

127.0.0.1

B.

224.0.0.1

C.

224.0.0.2

D.

255.255.255.255

Question 266

Which of the following are not the characteristics of a small campus network? ()

Options:

A.

Low number of users

B.

Single network level

C.

Simple network requirements

D.

Wide coverage

Question 267

Which of the following fields is not included in the HELL0 packet of the OSPF protocol? ()

Options:

A.

B. Network mask

B.

Sysname

C.

D. Hellointerval

Question 268

By default, the bridge priority of Huawei switches is 32768 ()

Options:

A.

True

B.

False

Question 269

The administrator has configured the router as shown in the figure. Then a host connected to the G1/0/0 interface of the router. What kind of IP address can be obtained through DHCP? () (Single-choice question)

Options:

A.

The IP address obtained by the host belongs to the 10.10.10.0/24 network

B.

B. The IP address obtained by the host belongs to the 10.20.20.0/24 network

C.

The IP address obtained by the host may belong to the 10.10.10.0/24 network, or it may belong to the 10.20.20.0/24 network

D.

D. The host cannot get an address

Question 270

Which of the following commands configures the authentication mode as HWTACACS authentication? ()

Options:

A.

B. authentication-mode local

B.

authentication-mode hwtacacs

C.

D. authorization mode hwtacacs

Question 271

Which of the following attributes cannot be used as a parameter to measure C0st? ()

Options:

A.

B. Hop count

B.

sysname

C.

D. bandwidth

Question 272

All the devices in the picture can communicate normally. Is the corresponding relationship between the MAC address table of $WA and the port correct? () (Single-choice question)

Options:

A.

MAC-AG0/0/2

MAC-BG0/0/2

MAC-CG0/0/3

B.

MAC-AG0/0/1

MAC-BG0/0/2

MAC-CG0/0/1

C.

MAC-A--GO/0/1

MAC-B--G0/0/1

MAC-C--GO/0/3

D.

MAC-A--GO/0/1

MAC-B-G0/0/2

MAC-C-GO/0/3

Question 273

There are multiple route entries to the same destination network in the routing table. These routes are called? ()

Options:

A.

Suboptimal routing

B.

Multipath routing

C.

Default route

D.

Equal cost routing

Question 274

As shown in the figure, the network administrator creates VLAN2 on SWA and SWB. The ports connecting the hosts on the two switches are configured as Access ports. They are assigned to VLAN2. G0/0/1 of SWA and G0/0/2 of SWB are configured as Trunki ports. All VLANs are allowed to pass. What is needed to achieve normal communication between two hosts? () (Single-choice question)

Options:

A.

Configure G0/0/1 on SWC as a trunk port and allow VLAN2 to pass. Set G0/0/2 as an access port. PVID is 2.

B.

Create VLAN2 on SWC, configure G0/0/1 and G0/0/2 as trunk ports, and allow VLAN2 to pass

C.

C. Just create BLAN2 on SWC

D.

Configure G0/0/1 on SWC as a teunk port and allow VLAN2 to pass through

Question 275

As shown in the figure. All four switches are running $TP. Various parameters are set to default values. If the GO/0/2 port of switch C is blocked and cannot send configuration BPDUs through this port, how long will it take for the blocked port in the network to enter the forwarding state? () (Single-choice question)

Options:

A.

About 50 seconds

B.

C. About 15 seconds

C.

D. About 3 seconds

Question 276

The configuration information of a certain port of the switch is shown in the figure. Which of the following statements is wrong? () (Single-choice question)

Options:

A.

The port type is Hybrid

B.

If the VLAN TAG carried in the data frame is 200, the switch will strip off the VLAN TAG and send it out

C.

If the port receives a data frame without VLAN TAG, the switch needs to add VLAN TAG100

D.

If the VLAN TAG carried in the data frame is 100, the switch will strip off the VLAN TAG and send it out

Question 277

The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)

<Huawei>display mac address

MAC address table of slot 0:

MAC Address VLAN/PEVLAN CEVLAN Port Type LSP/LSR-ID

VSI/SI MAC-Tunnel

5489 9811 0b49 1 Eth0/0/3 static 0/

Total matching items on slot 0 displayed =1

MAC address table of slot 0:

MAC Address VLAN/ PEVLAN CEVLAN Port Type LSP/LSR-ID

VSI/SI MAC-Tunnel

5489-989d-1d30 1 Eth0/0/1 dynamic 0/-

5489-9885-18a8 1 Eth0/0/2 dynamic 0/-

Total matching items on slot 0 displayed =2

Options:

A.

The MAC address 5489-9811-0b49 is manually configured by the administrator

B.

After the switch restarts, all MAC addresses need to be relearned

C.

The MAC address 5489-989d-1d30 is manually configured by the administrator

D.

The MAC address 5489-9885-18a8 is manually configured by the administrator

Question 278

In the VRP interface, use the command startup saved-confi guration backup.cfg. Configure the backup.cfg file to be used at the next startup. ()

Options:

A.

True

B.

False

Question 279

You can manually specify the source address or source interface of the CAPWAP tunnel on the AC. ()

Options:

A.

True

B.

False

Question 280

The configuration of the country code will affect the frequency used for actual transmission and the maximum transmission power. ()

Options:

A.

True

B.

False

Question 281

If the broadcast address of a network is 172.16.1.255, what might its network address be? ()

Options:

A.

172.16.1.128

B.

C. 172.16.1.1

C.

D. 172.16.1.253

Question 282

The MAC address table of existing switches is shown in the figure. Which of the following statements are correct? () (Single-choice question)

Options:

A.

Received a data frame with a source MAC address of 5489-9811-0b49 and a destination MAC address of 5489-989d1d30 from the port. Forwarded from the Eth0/0/2 port

B.

The data frame with the source MAC address of 5489-9885-18a8 and the destination MAC address of 5489-989d-1d30 is received from the port. It is forwarded from the Eth0/0/1 port

C.

When the switch restarts, the MAC address learned by port Eth0/0/2 does not need to be relearned

D.

D. When the switch restarts, the MAC address learned by port Eth0/0/2 does not need to be relearned

Question 283

Which of the following statements are correct for the MAC address of the existing switch? ()

Options:

A.

MAC. The address 5489-9885-18a8 is manually configured by the administrator

B.

MAC. The address 5489-9811-0b49 is manually configured by the administrator

C.

MAC. Address 5489-989d-1d30 is manually configured by the administrator

D.

After the switch restarts, all MAC addresses need to be re-learned

Question 284

Which packet type is used by network devices running the SNMPv1 protocol to actively send alarm information? ()

Options:

A.

Trap

B.

B. Response

C.

C. Get Request

D.

D. Get-Next Request

Question 285

Which of the following descriptions about the switch is wrong?

Options:

A.

The switch is generally used as the export equipment of the network

B.

B. Switches generally work at the data link layer

C.

C. The switch can complete the exchange of data frames

D.

D. The switch can provide network access services for terminal devices (PC/server)

Question 286

As shown in the figure below, host A and host B cannot communicate ()

Options:

A.

True

B.

False

Question 287

As shown in the figure below, what kind of network equipment can host A and host B use to communicate? () (Single-choice question)

Options:

A.

B. Hub

B.

router

C.

D. HUB

Question 288

As shown in the following figure, in the switching network, all switches are running the stp protocol. When the topology is stable, which of the following switches can be used to modify the BPDU sending cycle. Can it affect the SWD configuration BPDU sending cycle? () (Single-choice question)

Options:

A.

SWA

B.

C. SWC

C.

D. SWD

Question 289

As shown in the figure, the G0/0/0 and G0/0/1 interfaces of RTA are connected to two different network segments. RTA is the gateway of these two networks. Before host A sends data to host C, will it send an ARP Request to obtain O's MAC address? () (Single-choice question)

Options:

A.

SW

B.

Host C

C.

G0/0/1 interface of RTA

D.

G0/0/0 interface of RTA

Question 290

ifoneLength/Type = 0X8100 taught by the Ethernet data, which of the following is correct? ()

Options:

A.

B. There must be a UDP header in the upper layer of this data frame

B.

The upper layer of this data frame must existIP header

C.

D. There must be a TCP header in the upper layer of this data frame

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