Question 1

VRF, also called VPN instance, is a network virtualization technology that helps VPN technology to isolate users. In normal cases, multiple VPN instances can be created on a physical device, and each VPN instance has independent entries. Which of the following resources can be independently owned by a VPN instance?

Options :

A : Interface

B : Routing table

C : MAC address table

D : Routing protocol process

Answer: A,B,D

Question 2

The IP prefix list configuration on a Huawei router is shown below. Which of the following routes can match this IP prefix list?

bash

Copy

[huawei] ip ip-prefix test index 10 permit 10.0.0.0 8 less-equal 32

Options :

A : 10.1.1.1/32

B : 10.1.1.0/6

C : 10.1.1.0/24

D : 10.0.0.0/16

Answer: A,C,D

Question 3

In BGP, the Origin attribute is used to identify the origin of a route. Which of the following statements are true about the Origin attribute?

Options :

A :

If a route is imported to BGP by the originator using the network command, the Origin attribute of the BGP route is displayed as i in the BGP routing table.

B :

If a route is learned through EGP, the Origin attribute of this BGP route is displayed as ? in the BGP routing table.

C :

If multiple routes carry the same destination address but different Origin attributes and all other route selection conditions are the same, BGP selects the optimal route according to the Origin attribute in the following order: IGP > EGP > Incomplete.

D : This attribute is a well-known mandatory attribute.

Answer: A,C,D

Question 4

A local router runs IS-IS and its command output is shown in the following figure. Which of the following statements is true?

Options :

A : The circuit level of S4/0/0 is Level-1.

B : S4/0/0 supports IPv6.

C : S4/0/0 sends IIH packets at the interval of 30s.

D : The cost of S4/0/0 is 20.

Answer: D

Question 5

An enterprise network runs OSPF to implement network communication. Which of the following types of LSAs may be generated by an ABR?

Options :

A : NSSA LSA

B : AS External LSA

C : Network Summary LSA

D : ASBR Summary LSA

Answer: A,C,D

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