Exam H12-831-ENU Topic 1 Question 136 Discussion

Actual exam question for Huawei's H12-831-ENU exam
Question #: 136
Topic #: 1

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

A. A sham link is a link between two VPN instances, and each VPN instance must have an endpoint address of the sham link, which must be a Loopback with a 32-bit mask in the VPN address space on the PE router interface address B. In order to forward the VPN flow through the MPLS backbone network, the routing cost of the sham link should be less than the OSPF routing cost of the backdoor road C. The endpoint address of the sham link is published by BGP as a VPNv4 address. Routes that have passed through the sham link can also be imported into BGP in the form of VPNv4 routes. D. Sham link can be configured in any area, it needs to be configured manually, and there must be a route to the destination address of the sham link (the sham link endpoint address of the peer PE) in the local VPN instance

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