H12-891

H12-891 practice questions, page 6 of 22, with answer review and explanations.

Question 26

In BGP4+, what is the content of the next hop network address field carried in the MP_REACH_NLRI attributed of an Update packet?

  1. It must be a link-local address.
  2. It must be a global unicast address.
  3. It can be only a link-local address.
  4. The link-local address and global unicast address can be carried at the same time.

Question 27

Which of the following operations is not involved in the middle phase of a migration?

  1. Service test
  2. Migration preparation
  3. On-site monitoring
  4. Migration implementation

Question 28

Which of the following statements is incorrect about a BGP/MPLS IP VPN?

  1. A BGP/MPLS IP VPN consists of customer edges (CEs), provider edges (PEs), and providers (Ps). PEs and Ps are carrier devices, whereas CEs are BGP/MPLS IP VPN customer devices.
  2. Inter-site communication can be implemented through VPN. A site can only belong to only one VPN.
  3. In most cases, CEs are unaware of VPNs and do not need to support MPLS or MP-BGP.
  4. Ps only need to provide basic MPLS forwarding capabilities and do not need to maintain VPN-related information.

Question 29

As shown in the following figure, what is known about the default routes on R4?

  1. One default route
  2. Two equal-cost default routes
  3. Two default routes with different costs
  4. Four equal-cost default routes

Question 30

Which of the following security protection actions is not used to safeguard MAC addresses?

  1. Restrict
  2. Protect
  3. Re-mark
  4. Shutdown