Free Access Huawei.H12-891_V1.0.v2022-07-04.q121 Practice Test (Page 12)

Question 51

What is the following description of MPLS BGPVPN incorrect?

A.The routing exchange between PE-CE can be static routing, OSPF multi-instance, IS-IS multi-instance, EBGP

B.BGP So0, which is used to prevent routes issued from a VPN site from passing through the MPLS backbone and back to that site. So0 is an extended group attribute that MP-BGP automatically generates.

C.IBGP PEes generally use the Loopback interface address to establish a stable BGP neighbor relationship

D.The TTL field in the label has the effect of preventing loops.

Question 52

The link quality of a company's network is poor, often failures lead to route oscillation, and even occasionally there are routing loops, in order to prevent the recurrence of these phenomena, the network administrator decided to deploy URPF in the whole network to improve the stability of the network

A.False

B.True

Question 53

Which of the following VPN technologies may have two IP message headers in one message?

A.GOES

B.IPsec VPN

C.L2TP

D.SSL VPN

Question 54

In order to study the working mechanism of the OSPFv3 protocol, a project to build a network topology is as follows, the configuration of R1 and R2 is as follows, please ask the LSA switched between R1 and R2 What are the types?

A.Inter-area-prefix-LSA

B.network-LSA

C.Link-LSA

D.Router-LSA

Question 55

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

A.See the following entry in the BGP routing table: * *17 16 1. 11/32 0 00010 0? Indicates that the route is available non-optimal.

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

D.Non-aggregate routes take precedence over aggregate routes.

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Question 51

Question 52

Question 53

Question 54

Question 55

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