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Huawei H12-891_V1.0 HCIE-Datacom V1.0 Exam Practice Test

Demo: 91 questions
Total 610 questions

HCIE-Datacom V1.0 Questions and Answers

Question 1

A home user has opened a 1Mb/s bandwidth, and in order to improve the user experience, the operator can stabilize 2Mb/s when measuring speed If we use the listening bucket technology to achieve this requirement, which of the following methods is optimal.

Options:

A.

cir 10000 pir 12000

B.

cir 10o00 cbs 12000 pbd 12000

C.

cir 8000 pir 12000

D.

cir 10000 cbs 10000 pbs 12000

Question 2

The following description of the PPPoE data frame is correct?( Multiple choice questions).

Options:

A.

Once a PPPoE session is established, all Ethernet packets are unicast

B.

The Ethernet_Type domain is fixed to Ox8863

C.

When PPPoE passes session data, Code must be set to Ox0

D.

The Session_ID of the PPP session is not allowed to change and must be the specified in the Discovery phase

Question 3

What does IPV6 enable topology ipv6 mean under IS-IS protocol view?

Options:

A.

Does not have any meaning

B.

SPF calculation for IPv6 is not supported

C.

SPF calculation is performed separately in the topology of IPv4 and IPv6,

D.

IPv4, IPv6 using the same topology for SPF calculation

Question 4

An existing router running OSPF is connected to zone 0 and zone l. You configured zone l as the Stub domain. What classes does an LSA that operates only inside zone l contain?

Options:

A.

1LSA,2 3LSA

B.

3LSA 4LSA1 2

C.

1 ?LSA ? 2 ?LSA

D.

1 ??LSA,2 ??LSA 5 ??LSA

E.

7 ?LSA

Question 5

A routing tool can define multiple entries. Which tool will automatically add a deni-any entry at the end of the configuration?

Options:

A.

Route policy

B.

Community-tilter

C.

IP-prefix

D.

AS-path-filter

Question 6

Is the following description of the differences between IGMP name versions correct?

Options:

A.

IGMPv1/v2 cannot elect the queryer itself, while IGMPv3 can

B.

IGMPv1 does not support specific group queries, while IGMPv2 does

C.

IGMPv1/2/v3 cannot support the SSM model

D.

For members to leave, IGMPv2/v3 can actively leave, while IGMPvl cannot

Question 7

About multi-instance CE (Multi-VPN-Instance CE, MCE). What is the error described below?

Options:

A.

Users who connect to the same MCE but are not part of a VPN instance cannot access each other

B.

The MCE vs. PE direction must have multiple physical links to achieve isolation between different VPN instances

C.

MCE-enabled devices can access multiple VPI instances in BGP/RPLS IPVPN applications, reducing user network equipment investment

D.

On the MCE device, you need to create their own routing tables for different VPNs and bind to the corresponding interface

Question 8

In 0SPFv3 , Router-LSA is generated by each router, which describes the interface address and cost of each link of the router, and also includes the RouterlD of the neighbor router

Options:

A.

True

B.

False

Question 9

The command to configure VRRP preemption delay is ?

Options:

A.

vrrp vrid 1 preempt-mode timer delay 20

B.

vrrp vrid 1 preempt-delay 20

C.

vrrp vrid 1 preempt-timer 20

D.

vrrp vrid 1 timer delay 20

Question 10

If the Interface Sticky MAC function is enabled, what is the number of MAC addresses that the interface learns by default?

Options:

A.

15

B.

10

C.

5

D.

1

Question 11

During the LDPsession setup process, the active party first sends the Illitalization information to negotiate the parameters, and if the passive party does not accept the negotiation parameters, which of the following messages will be sent? <(Single select).)

Options:

A.

Hello Message

B.

Error Notification Message

C.

Keepalive Message

D.

Initialization Message

Question 12

Regarding the MPLS basic forwarding process, the following description is incorrect? Radio

Options:

A.

By default, the PHP-enabled Erass node assigns a label value of 3 to the inverted second-hop node.

B.

When an IP message enters the MPLS domain, the MPLS boundary device inserts a new label between the layer 2 header and the IP header.

C.

When the P message enters the MPLS domain, check whether the Tunel lD value corresponding to the destination IP address is Ox0O If the Tunel IlD value is Ox0 Then enter the MPLS forwarding process.

D.

The transport node device replaces the existing top-of-stack label (outermost label) with the label assigned by the next hop device.

Question 13

Users hope to be able to make the router forward and select messages according to their own defined policies on the basis of traditional route forwarding, and can adopt policy routing, and the following description of policy routing is incorrect

Options:

A.

Policy Routing can set the next hop IP address

B.

Policy Routing cannot be set in the next statement DSCP

C.

Policy Routing cannot be used to set IP precedence

D.

Policy-based routing can be used to match message lengths

Question 14

The flood range in OSPFv3 is the LSA within the entire autonomous system?

Options:

A.

Intra-Area-prefix-LSA

B.

AS-external-LSA

C.

Link-LSA

D.

Inter-Area-Prefix-LSA

Question 15

Which of the following DNS resource records are legitimate?

Options:

A.

FQDN

B.

NS

C.

PTR

D.

MX

E.

A

Question 16

Configure queue-based traffic shaping, which defaults to tailing if the queue length exceeds the cache size

Options:

A.

True

B.

False

Question 17

The switch SWA and SWB are connected together by 2 Ethernet links, where the switch SWA has the following interface configuration:

Options:

A.

Without changing the current configuration, GigabitEthernet1/0/1 and GigabitEthernet1/0/2 can join the same aggregation group

B.

Because of the different VLANs allowed, GigabitEthernet1/0/1 and GigabitEthernet1/0/2 cannot join the same aggregation group

C.

After link clustering is configured on both SWA and SWB, if MSTP is enabled on the switches SWA and SWB Both GigabitEthernetl1/0/1 and GigabitEthernetl/O/2 are the forwarding status of MSTP

D.

Only if the configuration of GigabitEthernet 1/0/2 is changed to match GigabitEthernet 1/0/1 can the two join the same aggregation group

Question 18

Which is the correct description of optimal routing election for each protocol in the following options?( Radio).

Options:

A.

Route entries in BGP that are unreachable for the next hop are also placed in the IP routing table.

In the

B.

BGP protocol, the best route to reach the same destination circumference is selected by comparing the cost values of the route entries.

C.

The OSPF protocol puts all the routing information in the LSDB into the IP routing table.

D.

From BGP and OSPF, different route entries to reach the same destination segment are learned, and the optimal route is selected to join the IP route table by comparing the protocol's preference value .

Question 19

When configuring ISIS zone authentication, which ISIS message will carry the authentication letter? ( Single choice questions).

Options:

A.

ISIS ?Level-1 ?SNP ?LSP?

B.

ISIS ?Level-2 ?SNP ?LSP?

C.

Hello message of ISIS's Level-1.

D.

Hello message of ISIS's Level-2

Question 20

When you deploy BGP/MPLSIPVPN, when two VPNs have a common site, the common site must not use overlapping address spaces with the other sites of the two VPNs.

Options:

A.

TRUE

B.

FALSE ?:B

499The series description for configuring static lSPs in MPLS networks is correct?

C.

When an LSR is Ingress LSR, only configure Out Label, which ranges from 16-1048575

D.

When an LSR is a Transit LSR, you need to configure both In Label and Out label, both in the range of 16-1023

E.

When an LSR is TransitLSR, you need to configure both ln Label and Out Label, both of which are 161023 The Out Label ranges from 16 to 1048575

F.

When an LSR is An Egyptian LSR, only in Label needs to be configured, ranging from 16-1023

Question 21

Regarding the DSCP field, the following statement is incorrect: single selection

Options:

A.

The DSCP value can be 0, and packets use the default forwarding mechanism when 0

B.

When the value of DSCP is EF, it indicates that the data belongs to the accelerated forwarding class.

C.

In addition to indicating the priority of the data, DSCP can also indicate the probability of data being discarded. The CS class in D. DSCP divides data into 8 priorities.

Question 22

The Serial Number field of LS is used to detect expired and duplicate LSAs. The field is a 32bt signed integer, so the small serial number is Ox8000000

Options:

A.

True

B.

False

Question 23

There are many ways to establish a cluster on a box switch, what methods does Huawei frame switch support to establish a cluster?

Options:

A.

Set up via a cluster card on the motherboard

B.

Establish

C.

through the cluster daughter card on the interface board. Establish

D.

through the service interface on the interface board Established by switching the cluster card on the network board

Question 24

What is the security level for untrust zones in the USG Series firewalls? ( Radio).

Options:

A.

50

B.

5

C.

10

D.

15

Question 25

As shown in the figure, in the HUB & Spoke networking mode of MPLS BGPVPN, in order to achieve the division can only communicate with the headquarters, the division can not communicate with each other When setting up RT, which of the following scenarios is this?( Radio).

A???:import Target:12:3EpodTarget:12:3

B. Headquarters: importTarget:1:1EpodTarget:3:3

C. Headquarters: Impot Target:2:2; Expor Target:3:3 D. Headquarters: importTarget: 12:3EpodTarget: 3:12

Options:

Question 26

Which of the following descriptions of MPLS header TTL are correct?

Options:

A.

Copy IPTIL value is handled in such a way that the LSR of the MPLS domain is hidden, which plays a certain security role

B.

Can prevent wireless circular forwarding of messages

C.

MPLS has two ways of handling TTL, one is that the IP packet copies the PTTL of the MPLS header hen it enters the MPLS network Value; Another is to set the TTL of the MPLS header to 255 at the entrance LER

D.

When copying TTL is disabled, tracert can see the LSR of the passing MPLS domain

Question 27

What are the ways to divide VLANs in Huawei switches? ( Multi-select) A Subnetting based on IP.

B. Division based on QoS

C. Partitioning based on port

D. Division based on protocol

E. Division based on MAC address.

Options:

Question 28

The following description of the characteristics of Huawei device Eth-trunk link aggregation is correct?

Options:

A.

Link aggregation enables load balancing based on data TCP or UDP ports

B.

Link aggregation cannot be deployed across devices

C.

Link aggregation can be applied to Both Layer 2 and Layer 3 devices

D.

Link aggregation can only be applied to Layer 2 devices.

Question 29

If you want to advertise 19072270/27 to an EBGP neighbor, is the following command correct?

Options:

A.

network 19072270 mask 255255255224

B.

network 1907227000031

C.

network 19072270255255255224

D.

network 19072270

E.

network 19072270255255255240

Question 30

The Option field in OSPEv3 appears in all LSAs

Options:

A.

True

B.

False

Question 31

CMPv6 uses the Type field to identify the message type, and according to the value of the type field, we can divide the ICMPv6 message into two categories, one is the error message and the other is the information message

Options:

A.

True

B.

False

Question 32

Four routers R1, R2, R3, and R4 run IS, and the I5S router type is noted in the diagram. All four routers have an area address of 49001, and looking at the routing table on R1l shows the following results, the reason why R did not reach the route of 1034344

Options:

A.

The routing policy configured on the ARO filters the System-ID of the default route

B.

R2 from conflicting with R3

C.

R and R4 Zone Planning Errors The System-ID of

D.

R2 conflicts with R1

Question 33

In the following topology diagram,

R1 can be established between R2 and R3 fetches the Internet, RI and R2, R1 and R3 EGP connections, R2, R3 belong to the same AS The default routes are issued through BGP separately, requiring R2 to be preferred for traffic accessed by RI to the Internet, and the following practices can be achieved

Options:

A.

R1 specifies that peer R3 sets the MED property to 150 in the import direction

B.

R2 specifies that peer R1 is in export The direction setting local priority is 150

C.

R2 specifies peer R1 in the export direction setting MED property to 150

D.

R1 specifies the peer R2 sets the local priority in the import direction to 150

Question 34

The following description of VLANs in Ethernet is correct?

Options:

A.

VLANs do not support bulk creation on devices

B.

The range of VLANs is 0 to 4096

C.

The default reserved VLANs for Huawei devices are 4000~4010

D.

VLANs can be extended through QinQ technology.

Question 35

A router Router LSA is shown in the figure below, and the following statement is incorrect?

Options:

A.

This router is a DR

B.

This router has established an adjacency relationship

C.

This router supports external route ingestion

D.

The Router ID of this router is 100121

Question 36

Regarding BGP MED, which of the following descriptions is correct?

Options:

A.

In the BGP routing rules, MED has a lower priority than AS Path, Praferred-value, Local-Preference, etc Origin

B.

The default value for the B. BGP routing MED is 0

C.

By default, if there is no MED value in the route attribute, it is processed by 0 If the bestroute med-none-as-maximum command is configured, MED is processed as the maximum 4294967295

D.

By default, BGP routing rules can MED comparison of routes from different autonomous systems

Question 37

Regarding the MPLS handling mode of TTL, the following description is correct?

Options:

A.

Pipe mode. When an IP message passes through an MPLS network, the IPTTL minus l at the entry point is mapped to the MPLS TTL field

B.

MPLS tags in the TTL, which mean the same as the TTL domain in the IP header. TTL prevents mpLS networks from creating routing loops

C.

In Unifor mode, when an IP message passes through an MPLS network, the inbound IPTTL is minus 1. The MPLSTTL field is a fixed value

D.

In MMLSVPI, if you need to hide the structure of the MPLS backbone network, you can use the Uniform mode on Ingress for private network messages

Question 38

What is the following description of MPLS incorrect?

Options:

A.

The length of the MPLS tag is 20 to 20 for packet forwarding.

B.

The tag space range of dynamic signaling protocols such as LDP, M P-BGP is 16 to 1023

C.

When using the TTL processing method of Pipe mode, the IP packet transmits the TTL of the IP packet over the IPLS network. The value is only minus 1 for the MPLS in and out nodes.

D.

MPLS supports multi-layer label nesting, and the S bit value of the innermost label is 1.

Question 39

The following statement about ISIS (IPv6) is correct?

Options:

A.

In order to support the processing and calculation of IPV6 routes, IS-IS has added TLV232, 236

B.

By default, IS-IS has the multi-topology feature turned on

C.

IS-IS works at the data link layer and only needs to add a new TLV to support IPv6

D.

To support the processing and computation of IPv6 routes, IS-IS has added NLPID to the 129TLV

Question 40

There are two Communily filters: ip comimuniy-lite lpemit 101201 ip community fiter 2permit101 ip commmuriyfilter 2pemit21 Regarding the above ommuniyfiter, the correct description is ?( Multiple choice questions).

Options:

A.

As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches the community-filterl

B.

As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches community-filter2

C.

The BGP route matches community-filter 1 only if the community attribute values carried in the BGP route contain 100:1 and 200:1

D.

A BGP route matches community-filter2 only if the group attribute values carried in the BGP route include 100:1 and 200:1

Question 41

A workstation is connected to an Ethernet switch in the work through a super-class 5 wire, the workstation can access the entire network (that is, full connection) through the switch, but the access rate is much lower than expected, when viewing the switch interface statistics, you can detect that there are many ultra-small frames, with software to read the statistics of the workstation network card, found that there are Many FCS and frame alignment errors, what causes the machine to cause these errors?

Options:

A.

The rate mismatch between the workstation and the switch

B.

Interface mismatched to an 8021Qtrunk interface

C.

The line between the workstation and the switch has been completely damaged

D.

The operating mode between the workstation and the switch does not match

E.

The network interface card on the workstation is damaged

Question 42

Which IPV6 address would you ping to confirm that OSPFv3 is capable of pastoring unicast messages over the link?

Options:

A.

Site local Multicast

B.

Anycast Address

C.

Global Address of the link

D.

Unique Local Add

E.

Link Local Address

Question 43

In an HWIP multicast network, where multiple sources exist and each source has several receivers, which protocol allows source-to-RP traffic and RP-to-receiver traffic to share the same tree 2?

Options:

A.

MOSPF

B.

PIM SM

C.

DVMRP

D.

56768GZliuji

E.

PIM-DM

Question 44

If a Huawei switch runs the RSTP protocol, when will the BPDUs on a port on the switch be aged?

Options:

A.

On the interface, RSTP does not age BPDU

B.

After more than 6 seconds

C.

After Ma ge times out

D.

After Hello time times out

E.

after the Forward Delay timeout

Question 45

Is the following description of ospf virtual links correct?

Options:

A.

A virtual connection can be established in any area, after which it itself belongs to the region

B.

The virtual connection ip is used as the link address

C.

Virtual links can be used to solve the problem of zone 0 being segmented

D.

The cost of a virtual connection is zero and is the optimal link

Question 46

Which of the following statement about isis protocol route aggregation is correct?

Options:

A.

Route aggregation can be configured and takes effect on all types of routers

B.

Route aggregation can only take effect if configured on Leve-1 port routers

C.

Route aggregation can only be configured on Leve-2 routers to take effect

D.

Route aggregation can only be configured on Leve-1-2 routers to take effect with

Question 47

What mechanisms or techniques can VRRP combine with to monitor uplink connectivity?

Options:

A.

IP-link

B.

BFD

C.

NQA

D.

Interface trace

Question 48

Protocols with TCP ports 443, 179, 137, 110, and 23 are, in order: radio

Options:

A.

Finger,DHCP Server,NetBios Name Server,POP3,TelnetB

B.

LDAP,SNMP,TFTP,POP3,Telnet

C.

HTTPS,SNMP,POP3,DNS ,Telnet

D.

HiPS,BGP, NetBios Name Server ,POP3,TelnetE. BGP,POP3,SNMP,TFTP,Teinet

Question 49

HW users are transferring a very large number of files via TFTP. What protocol does TFTP rely on for transmission?

Options:

A.

ICMP and UDP

B.

IP ?TCP

C.

UDP

D.

NFS E. FTP

Question 50

Which of the following options is described correctly for the assertion mechanism?( Radio).

Options:

A.

Winner's election process does not make IP address size a condition of the election

B.

In the assertion mechanism, the winner is responsible for forwarding multicast data to the broadcast segment

C.

The assertion mechanism is used for the election of DR

D.

In the assertion mechanism, the loser will shut down the interface with the broadcast network necklace

Question 51

The topology diagram and configuration are as follows, and now we hope that there is no buttoned route entry of 10033/32 in the Rl route table

Options:

A.

Configure route summarization on R3 to summarize the routes to 10000/16

B.

Configure route rollup on R2 to summarize the route as 10000/16

C.

Configure filter-pollcy on top of R1 with 10033/32 via ACLL. Also applied in the Import direction

D.

Configure flter-policy on the above, match 10033/32 through ACL, and apply the answer in the expo direction

Question 52

In order to reduce the number of OSPF routes in some unscheduled areas, the OSPF protocol has developed special area functions, and the following characteristic description of ospf special areas is correct?( Single choice questions).

Options:

A.

ASBR-Sunmary-LSA is allowed to be published to NSSA regions

B.

AS-External-LSA is allowed to be published to Stub regions

C.

Any OSPF zone can be configured as a special zone

D.

Special area routers cannot establish OSPF neighbor relationships with regular area routers

Question 53

Configuring filter-policy 2000 export in the IS-IS process, the wrong statement about the function of the command is ?

Options:

A.

which needs to be used in conjunction with route ingestion, acts as an external route sender neighbor that only partially introduces.

B.

If you do not configure this command, the device will by default introduce the external routing protocol to the IS-IS route all outgoing

C.

Restricts the external publication of route entries generated by the device itself

D.

This command will filter the link status information released to the outside world

Question 54

After BGP introduces routes for other protocols, the next hop in the BGP routing table is consistent with the next hop of the introduced routing protocol

Options:

A.

True

B.

False

Question 55

In order to reduce the number of OSPF routes in certain areas, the OSPf protocol has developed special area functions, and the following description of the characteristics of OSPF special areas is correct

Options:

A.

ASBR-Sunmary-LSA is allowed to be published to the NSSA region

B.

AS-External-LSA is allowed to be published to the Stub region

C.

Any OSPF zone can be configured as a special zone

D.

Zone can be equipped with zhiyi

Question 56

As shown in the following figure, R1 and R2 establish a neighbor relationship for Level2, which is critical: placed as follows, then the following about The route entry for R2 is correct

Options:

A.

The 0:/64 router appears in the IP routing table

B.

2022:/64 Routers appear in the IP routing table c.2019::/64 Routers appear in the P routing table

C.

2021:-/64 Router will appear in the P routing table

Question 57

As shown in the following topology, EBGP is running between ASI0O0, AS.203, AS.30, AS8400, and the neighbor relationship has been established as RECEIVed by AS4O0 When AS1OO issues a 1..11/2 CIDR segment BGP route, the path order recorded in the ASPath attribute is correct

Options:

A.

10,200,3

B.

400,300,200,100

C.

100,200,300,400

D.

300,200,100

Question 58

In cross-domain VPN-OptionB packet forwarding, two ASBRs exchange the same LSP tags once.

Options:

A.

True

B.

False

Question 59

When DLDP detects the presence of a one-way link in the fiber, the default actions of Huawei equipment include: the DLDP state machine migrates to the Disable state, outputs Trap information, and automatically sets the interface to a blocked state.

Options:

A.

True

B.

False

Question 60

The following statement about the VXLAN gateway is incorrect?( Single choice questions).

Options:

A.

Layer 2 gateway: Used to solve the problem of tenant access to the VXLAN virtual network, and can also be used for subnet communication of the same VXLAN virtual network.

B.

Layer 3 gateway: Used for cross-subnet communication of the VXLAN virtual network and access to external networks.

C.

VXLAN Layer 3 gateways can be divided into centralized gateways and distributed gateways.

D.

Layer 2 gateway and VPN instance binding.

Question 61

As shown in the figure, three switches SI, SN2, and SN3, where SN1 is the root bridge between S1 and SN2 Now that link support SN2 cannot receive the configuration BPDU sent by the root car, the administrator needs to configure which spanning tree protection mechanism to prevent the problem of link congestion?

Options:

A.

root protection

B.

Anti-TC-BPDU attack

C.

BPD protection

D.

Loop protection

Question 62

Regarding the description of the permanent multicast address, the error is ?

Options:

A.

All routers running the PIM protocol listen on 22400100

B.

All routers listen on 224002

C.

All hosts and routers in the network segment listen on 224001

D.

All routers running the OSPF protocol listen to 224005

Question 63

If we have a VPN instance configured on a router, if we need to view the VPN route on a Huawei router, which of the following commands should we use?

Options:

A.

display ip routing-table vpn-instance vpn-instance-name

B.

display ip routing-table

C.

display vpn routing-table

D.

display ip vpn-instance

Question 64

Which of the following parameters are not required when configuring BGP Peers?

Options:

A.

as-number

B.

password

C.

peer IP Address

D.

Description

Question 65

BGP4+ is running between two routers, and the neighbor relationship is normal, but the BGP routing table of the router on this side does not have a neighbor route entry.

Options:

A.

The route entry in the peer BGP route table is non-optimal.

B.

The next hop address of the

C.

BGP route entry is unreachable

D.

Peer ignore is configured on the peer

E.

The peer is configured with active-route-advertise

Question 66

When an administrator configures VRRP, which of the following is not required?

Options:

A.

Preemption mode

B.

Priority of the virtual router

C.

Preemption delay

D.

Virtual IP address

Question 67

Which SNMP message type sent to NMS reports events that are reliable? ( Single choice questions).

Options:

A.

Inform

B.

Get

C.

Response

D.

Trap

E.

Get Bulk

Question 68

What are the reasons why the BGP connection is down after it is successfully established ? ( Single choice questions) Single choice

Options:

A.

The wrong BGP packet was received.

B.

The mandatory attribute in the route update packet is missing.

C.

Open message negotiation failed.

D.

After the BGP connection is established, the keepalive message is not received within the negotiated holdtime time.

Question 69

Regarding the characteristics of CE double attribution, the description is wrong with ?

Options:

A.

CE accesses the backbone through two links that can be used as both load sharing and primary and standby links.

B.

CE and PE form a CE dual-home network, which can ensure high network availability.

C.

VRFs of two PEs connected to the same CE can belong to different VPNs.

D.

In the CE dual home network, it is possible to generate loops, and you can use route-tag to solve the loop problem.

Question 70

If the receive cache of a switch's gigabit Ethernet interface is full, what protocol does the switch use to know that the remote interface delays sending data frames for a period of time?

Options:

A.

8023af

B.

8021U

C.

8021D

D.

8023

E.

8023Z

Question 71

The following statement about the IS-IS protocol is incorrect?

Options:

A.

The IS-IS protocol is a link-state protocol that runs between AS

B.

The IS-IS protocol supports CLNP networks

C.

Messages for the IS-IS protocol are encapsulated directly by the data link layer

D.

The IS-IS protocol supports IP network ad

Question 72

As shown in the figure,

in the context of IPv4 and IPv6, the SEL field in the NET address of the ISIS is always valued as 00?

Options:

A.

True

B.

False

Question 73

In an MPLS IBGP VPN environment, if tags are distributed only through BGP, LDP, the MPLS tags for a message can be up to two layers of tags.

Options:

A.

True

B.

False

Question 74

Which address prefix in the following options indicates that the address is globally unique and globally routable among unicast addresses in IPv6, similar to a public address in IPv4?(). Single choice questions).

Options:

A.

::1/128

B.

FE80:/10

C.

FE80::/10

D.

2000:;/3

Question 75

ISIS does not send CSNP packets under the P2P network type during the neighbor establishment process.

Options:

A.

True

B.

False

Question 76

The following about BGP routing, what is the wrong description?

Options:

A.

Non-aggregate routes take precedence over aggregate routes.

B.

In the case of PrefVal, Local_Preference equality, if the BGP preference of the locally generated route, IBGP route, EBGP route is equal, the valid reference of this generation is preceded by priority.

C.

See the following entry in the BGP routing table: • *172 16 1. 11/32 0 00010 0? Indicates that the route is available non-optimal.

D.

For next_hop unreachable routes are invalid cat by and do not participate in the preference. Flogging case

Question 77

When running OSPFv3 on a Huawei router, the OSPFv3 process automatically selects an interface address as the process router id

Options:

A.

True

B.

False

Question 78

The existing router HWl running BGP is configured with both IBGP neighbors and EBGP tenants. The following descriptions about IBGP Neighbors and EBGP Neighbors are correct?

Options:

A.

The router will have an EBGP BGP neighbor from it must be connected directly, otherwise, IBGP-Multi-hop must be configured

B.

The router sends BGP updates learned from its EBGP neighbors to its other IBGP neighbors and EBGP neighbors

C.

IBGP neighbors can establish neighbor relationships through the Loopback interface

D.

The router sends BGP updates learned from its IBGP neighbors to its other IBGP neighbors and EPGP neighbors

E.

EBGP neighbors must be directly connected, otherwise, EBGP-Multi-hop must be configured with

Question 79

What are the wrong statements about OSTPF's Router LSA and Network LSA?

Options:

A.

There must be both Router LSA and Network LSA in the OSPF network

B.

Network LSA carries both topology and routing information

C.

A router running OSPF must produce a Network LSA

D.

A router running OSPF must produce a Router LSA

Question 80

The main routing policy tools that BGP can use are Filter-policy and Route-policy, where Fate-policy can only filter routes and Route-policy can only modify routes

Options:

A.

TRUE

B.

FALSE

Question 81

/R1Jospf1lRL-osp- jarea.2[RLospf-1-arca-0002]network1001310000 As shown in the configuration, the administrator configured OSPF but RI on R1 You cannot learn routes for other routing rings. Then the possible cause is the question).

Options:

A.

This router does not have an OSPF process number configured

B.

This router is configured with a different zone ID than its neighbor router's zone ID

C.

This router does not have authentication features configured, but neighbor routers configure authentication features

D.

The declared network address of this router does not match the interface mask

Question 82

Regarding route introduction, what is the following description of the error?

Options:

A.

BGP supports both import and network when generating routes, and the network mode is more precise.

B.

By default, OSPF introduces an external route with a default metric of 1, and the level-2 network of the ingested external route type type, Type2

C.

ISIS, routes to Level After the 1 makes a route ingestion, if you do not manually configure the ingestion policy, a bad route will be formed.

D.

Introducing IBGP routing in OSPF may cause routing loops

Question 83

Port isolation technology deployed in Ethernet can realize Layer 2 interoperability and Layer 3 isolation, making networking more flexible.

Options:

A.

TRUE

B.

FALSE

Question 84

If an administrator wants to manage certain routes on the router during operations, the following tools are listed below. These routes can be flagged so that administrators can configure policies

Options:

A.

If the BGP protocol is running, the route is marked with the community attribute

B.

Use ACLs to tag routes on the router.

C.

Use the Tag value to mark the route on the router.

D.

Use ipprefix to tag routes on the router.

Question 85

In an intra-domain MPLSVPN network, when a packet enters the public network and is forwarded, it is encapsulated with two layers of MPLS tags, and the description of the two layers of tags in the following options is incorrect

Options:

A.

The outer label of mpls VPN is assigned by the LDP protocol or statically, and the inner label is assigned by the MP-BGP neighbor of the peer

B.

The outer label of MPLS VPN is called a private network label, and the inner label is called a public network label

C.

The outer label is used to correctly send packets to the appropriate VPN in

D.

on the PE device By default, the outer label is ejected before the packet is forwarded to the last hop device

Question 86

Between two directly attached devices that have established an IBGP neighbor, execute the shutdown command to close the interface of one of the devices. The BGP connection is not immediately disconnected.

Options:

A.

TRUE

B.

FALSE

Question 87

Regarding the tag space for MPLS, the description is incorrect

A When the penultimate hop LSR performs a label swap, if the swapped tag value is found to be

B. the tag is popped up by default and the message is sent to the last hop

C. Above 1024 is the tag space shared by dynamic signaling protocols such as LDP, RSVP-TE, MP-BGP, etc

D. 16-1023 is a label control shared by static LSPs and static CR-LSPs

Options:

Question 88

What designs in the router can improve the reliability of the router?

Options:

A.

Dual power supply design

B.

Module hot-swappable design

C.

Issu Design

D.

Dual-engine design

Question 89

The following statement about RSTP root protection is correct?

Options:

A.

Turning on root protection on the root port takes effect

B.

The port that turns on the root protection receives the RST BDPU with a higher priority and will enter the error-down state

C.

It is recommended that you turn it on on a switch that is at the edge of the network

D.

After opening the root-protected port and receiving the RSTBPDU with a higher priority, if it does not continue to receive the RSTBPDU with a higher priority for a period of time, it will return to the normal forwarding state

Question 90

Off-stem cross-domain VPN-Option B scenario, the following description is incorrect?

Options:

A.

During the packet forwarding process, it is necessary to exchange the VPN's private network LSP on the

B.

two ASBRs IP-EBGP neighbor relationships.

C.

The cross-domain VPN-Option B scheme is not limited by the number of interconnection links between ASBRs

D.

The outer layer tag is exchanged between two ASBRs to vpnV4 routes.

Question 91

Router A has an IP route entry with a purposeful CIDR block of 10001/32 and an outgoing interface of GigabitEthernetO/0/1. Now add the following configuration: acd number 2000 rule 10 permit source1001.10#traffic classifier test if-match acl 2000 # traffic behavior test remarkdscp cs3#traffic policy test classifier test behavior test#

interfaceGigabitftherneto/0/1 ip address 1001212552552550 traffic-policy test outbound#assuming router A received a destination IP of 10001 Of packets, the following statements are correct:

Options:

A.

If the data packet source lIP address is 1001.2, it can be forwarded with the DSCP field marked CS3

B.

If the packet source IP address is 1001.1, it can be forwarded while the DSCP field is marked as CS3

C.

If the packet source IP address is 1001.2, it cannot be forwarded

D.

If the packet source IP address is 1001.2, it can be forwarded while the DSCP field remains unchanged

Demo: 91 questions
Total 610 questions