Free Access Huawei.H12-261_V3.0.v2022-08-02.q111 Practice Test (Page 20)

Question 91

Regarding the sham link, which of the following descriptions is wrong?

A.The endpoint address of the Sham link is published by BGP as the VPNv4 address. Routes that have passed through the sham link can also be imported into BGP in the form of VPNv4 routes.

B.Sham link is regarded as a link between two VPI instances, each VPN instance must have an endpoint address of sham1irk, which must be a Loopback interface with a 32-bit mask in the VPN address space on the PE router address

C.Sham link can be advertised in any area, it needs to be configured manually, and the local VPN instance must have a route to the destination address of the sham link (the sham link endpoint address of the peer PE)

D.In order to forward VPN traffic through the MPLS backbone network, the routing cost of the sham link should be less than the OSPF routing cost of the backdoor link

Question 92

Which of the following descriptions is incorrect about the BGP alliance?

A.Sub-ASs within the confederation can use private AS numbers. HuaweiFor NE/AR routers, a confederation can be configured with up to 32 sub-ASs.

B.The confederation divides an AS into several sub-ASs, and the AS outside the confederation still considers the confederation as one AS.

C.Son of the UnionAS number, which is advertised to BGP peers outside the federation by default

D.A confederation can easily detect routing loops within an AS because EBGP is running between child ASs.

Question 93

The HTTP protocol is based on TCP, so TCP can be used Flood attack defense method defends HTTP Flood attack.

A.false

B.True

Question 94

In BGP/MPLS IP VPN, if the OSPF protocol is used to exchange routing information between PE and CE, the domain identifier (Domain ID) is used to distinguish whether the route imported in the VPN instance comes from the same OSPF domain.

A.FALSE

B.TRUE

Question 95

Community-filter has two types of basic community attribute filters and advanced community attribute filters.
Which of the following filter tools makes the advanced groupAre gender filters more flexible than basic community attribute filters for matching community attributes?

A.IP-prefix

B.AS-path-filter

C.Regular-expression

D.ACL

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Question 91

Question 92

Question 93

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Question 95

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