Online Access Free H31-161 Exam Questions

As shown I the figure, the asymmetric VLL FRR networking is used AC interfaces on PE 1, PE 2 and PE 3 are configured as follows:

Which of the following statements are the true on the condition that IGP and MPLS are configured correctly on the public network?

• A.If a forwarding fault is detected on the public network side of the between PE 1 and PE 2, traffic from CE 2 to CE 1 can be switched to the PW between PE 1 and PE3.
• B.The PW between PE1 and PE 2 is the primary PW.
• C.If a forwarding fault is detected on the PW between PE a and PE 2 , traffic can be switched to the backup PW on PE 1.
• D.If a forwarding fault is detected on the PW between PE a and PE 2 , traffic from CE 1 to CE 2 can be switched to the PW between PE 1 and PE 3.

Which statement is false?

• A.The SSM Mapping function can map the IS_IN(S,G) message of the IGMPv3.
• B.The PIM SM simultaneously supports SSM multicast and ASM multicast
• C.The SSM multicast provides a better access control scheme than the ASM multicast.
• D.The SSM multicast forwarding model does not require shared trees.

Which feature can make OSPF (or IS-IS) advertise MPLS TE tunnels as links?

• A.IGP Shortcut
• B.SRLG
• C.FA
• D.FRR

On the OSPF network, which of the following statements about the authentication function of the OSPF protocol are true?

• A.The interface authentication mode must be consistent with the area authentication mode . For Example, interface and area are authentication in simple or MDS mode or are not authenticated.
• B.The interface authentication mode can be different from the area authentication mode.
• C.The OSPF protocol supports area authentication and interface authentication.
• D.The authentication function of the OSPF is implemented by parameter settings in hello packets.

Which of the following can be implemented in an IP backbone network?

• A.MPLS
• B.BGP
• C.ISIS
• D.RIP