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  4. H12-221 - HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network)

Huawei H12-221 HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) Exam Practice Test

Demo: 33 questions
Total 225 questions
Get H12-221 Full Access Download H12-221 PDF

HCNP-R&S-IERN (Huawei Certified Network Professional-Implementing Enterprise Routing Network) Questions and Answers

Question 1

How many hosts can the network 154.27.0.0 support, if not subnetted?

Options:

A.

254

B.

1024

C.

65,534

D.

16,777,206

Question 2

Which of these statements is false when using the import-route command to import routes into BGP?

Options:

A.

The import-route command can import IGP routes, direct routes, and static routes into BGP.

B.

A process ID must be specified if OSPF routes or RIP routes are imported into BGP.

C.

By default, the origin attribute of imported routes is IGP.

D.

Routing policies filters the routes imported from other routing protocols.

Question 3

In VRP, by default, a BGP router does not automatically send a refresh packet to its BGP peers for retransmitting an Update packet after the inbound routing policy of the BGP peers changes.

Options:

A.

TRUE

B.

FALSE

Question 4

Which of the following statements are true if a BGP peer is configured with "multiple" route selection tools for route filtering? (Select 2 answers)

Options:

A.

The routes received from the BGP peer are first matched with IP-prefix and then with route-policy.

B.

The routes received from the BGP peer are first matched with route-policy and then with IP-prefix.

C.

The routes sent to the BGP peer are first matched with IP-prefix and then with route-policy.

D.

The routes sent to the BGP peer are first matched with route-policy and then with IP-prefix.

Question 5

Which of the following statements belong to BGP community attribute? (Select 3 answers)

Options:

A.

NO_EXPORT

B.

NO_ADVIERTISE

C.

LOCAL_EXPORT_SUBCONFED

D.

NO_BROADCAST

Question 6

Which statement about OSPF is false?

Options:

A.

Hello messages are used as a form of greeting to discover other routers on its networks and establish relationships between neighboring devices. On broadcast or NBMA networks, Hello messages can also be used to elect a DR or a BDR.

B.

DD packets describe the summary LSDB information by carrying LSA headers.

C.

The intervals at which two routers send Hello messages must be consistent; otherwise, cannot be established relationships between neighboring devices.

D.

DD packets contain headers of all LSAs for periodic LSDB synchronization between OSPF neighbors.

Question 7

In which of the following states do BGP peers refuse to initiate or accept connection requests?

Options:

A.

Established

B.

OpenSent

C.

Active

D.

Idle

Question 8

In a route-policy, which BGP attributes can be used to define apply clauses? (Select 3 answers)

Options:

A.

Local-Preference

B.

Tag

C.

Origin

D.

AS-Path

Question 9

Which of the following is not supported by policy-based routing for specifying the data forwarding path?

Options:

A.

Source address

B.

Port number

C.

Destination address

D.

Packet length

Question 10

Which statements regarding the local preference attribute are true? (Select 2 answers)

Options:

A.

Based on BGP route selection rules, the local preference has a lower priority than the preferred-value which means BGP compares local preference of routes after comparing preferred-values.

B.

The local preference of a BGP route is 0 by default.

C.

The local preference selects an exit point for data from the local AS

D.

Based on BGP route selection rules, the local preference has a lower priority than the MED attribute which means that BGP compares local preference of routes after comparing MED.

Question 11

What are the functions of an IGMFV2 Query message? (Select 3 answers)

Options:

A.

A router sends IGMPv2 Query messages to collect group memberships of receiver hosts.

B.

A router sends IGMPv2 Query messages to elect a querier.

C.

A working router sends Query messages periodically.

D.

Based on IGMPv2 Query messages, receiver hosts can unicast Report messages to the querier by obtaining its address.

Question 12

Which of the following attributes must exist in the BGP update messages? (Select 3 answers)

Options:

A.

LOCAL_PREF

B.

NEXT_HOP

C.

ORIGIN

D.

AS_PATH

Question 13

RTA is a source's DR and RTB is an RP. A multicast source sends multicast data to RTA but RTB cannot find any information about the multicast source (registered by using the PIM Register message). Why? (Select 3 answers)

Options:

A.

RTB has no unicast routes to RTA,

B.

RTA fails to learn RP information.

C.

RTA has no unicast routes to RTB.

D.

The RPlearned by RTA is not RTB.

Question 14

A router can be configured to run only one BGP routing process.

Options:

A.

TRUE

B.

FALSE

Question 15

For link-state routing protocols, filtering inbound routes cannot block the transmission of link-state information. The filtering effect means that routes cannot be injected into the local routing table but neighbors can still receive complete route state information and calculate complete routes.

Options:

A.

TRUE

B.

FALSE

Question 16

Which of the following routes matches the ACL filter given below?

"acl number 2001

rule 0 permit source 1.1.0.0 0"

Options:

A.

1.1.1.1/32

B.

1.1.1.0/24

C.

1.1.0.0/16

D.

1.0.0.0/8

Question 17

Enabling MD5 authentication between BGP peers can prevent DoS attacks that target BGP peers.

Options:

A.

TRUE

B.

FALSE

Question 18

Which of the following statements regarding the Reverse Path Forwarding (RPF) mechanism are

true? (Select 2 answers)

Options:

A.

Multicast RPF does not depend on unicast routing.

B.

All multicast protocols adopt the RPF mechanism.

C.

A router discards the received multicast packets if the RPF check fails.

D.

The RPF mechanism has two functions: It prevents multicast routing loops and the forwarding of redundant multicast packets.

Question 19

Which of the following statements regarding ACL type are true? (Select 3 answers)

Options:

A.

ACL consists of basic ACL, advanced ACL and interface-based ACL

B.

ACL ranging from 2000 to 2999 belongs to advanced ACL

C.

ACL ranging from 3000 to 3999 belongs to advanced ACL

D.

Advanced ACL can be used to match either destination address or source address

Question 20

Whenever changes occur in the BGP routing table, a BGP Speaker advertises all the optimal routes in the BGP routing table to its peers.

Options:

A.

TRUE

B.

FALSE

Question 21

Which is the origin attribute of the BGP routes redistributed using the import-route command?

Options:

A.

IGP

B.

EGP

C.

Incomplete

D.

Unknown

Question 22

OSPF directly runs over the IP protocol as protocol number 89.

Options:

A.

TRUE

B.

FALSE

Question 23

Which of the following problems can be solved by IGMP Snooping?

Options:

A.

Receiver hosts support only IGNPv2, but only the SSM model is used on the network.

B.

A router receives large quantities of IGMP Report messages due to the existence of large number of hosts on the network.

C.

Broadcasting of multicast data on Layer 2 devices.

D.

Validity of IGMP Report messages.

Question 24

Which methods can be used to import local routes into BGP? (Select 2 answers)

Options:

A.

Run the network command,

B.

Receive routes from peers.

C.

Run the summary automatic command.

D.

Run the import command.

Question 25

What is the maximum number of bits that can be used for subnetting, when the netork address is a Class C address?

Options:

A.

6

B.

8

C.

12

D.

14

Question 26

The Internet Group Management Protocol (IGMP) runs between hosts and their immediately neighboring multicast routers.

Options:

A.

TRUE

B.

FALSE

Question 27

dis igmp group verbose

IGMP interface group report information

Ethernet6/1/0(10.1.1.1):

Total 1 IGMP Group reported

Group: 225.0.0.1

Uptime: 00:09:03

Expires: 00:02:09

Last reporter: 10.1.1.30

Last-member-query-counter: 0

Last-member-query -timer-expiry: off

Group mode: exclude

Versionl-host-present-timer-expiry: off

Version2-host-present-timer-expiry: 00:02:09

The preceding information is generated after a router receives a Report message from group 225.0.0.1 through Ethernet 6/1/0. Which type of Report message will not be processed by the router?

Options:

A.

IS_IN

B.

ALLOW

C.

BLOCK

Question 28

Which of the statements describes how BGP updates routes?

Options:

A.

Broadcasts all routes periodically

B.

Update all routes periodically using multicast addresses

C.

Updates only changed and new routes

D.

Updates routes on BGP peer requests

Question 29

Which of the following subnet masks can be used to divide a Class C network into 5 subnets, with each subnet containing a maximum of 20 hosts?

Options:

A.

255.255.255.192

B.

255.255.255.240

C.

255.255.255.224

D.

255.255.255.248

Question 30

In OSPF protocol, Different types of networks cannot establish an adjacency with each other in the Full state.

Options:

A.

TRUE

B.

FALSE

Question 31

Which of the following BGP attributes is an optional transitive attribute?

Options:

A.

ORIGIN

B.

AS_PATH

C.

NEXT_HOP

D.

MED

E.

LOCAL_PREF

F.

COMMUNITY

Question 32

Only Router-LSAs and Network-LSAs are involved in intra-area route calculations.

Options:

A.

TRUE

B.

FALSE

Question 33

Which of the following statements regarding multicast MAC addresses are true (Select 3 answers)

Options:

A.

The high-order 24 bits of a multicast MAC address are 0x01005e while the low-order 23 bits of a multicast MAC address are the low-order 23 bits of a multicast IP address.

B.

One multicast MAC address can map 32 different IP multicast addresses.

C.

Multicast MAC addresses are used in the link layer to identify receivers that are in the same multicast group.

D.

One multicast MAC address can map only one IP multicast address.

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Demo: 33 questions
Total 225 questions
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