In an MPLS domain, LSR can be divided into Ingress LSR, Transit LSR and Egress LSR according to the different processing methods of LSRs for dat a. For the same FEC. a certain LSR can be the Ingress LSR of the FEC or the Transit LSR of the FEC. LSRO

• A.True
• B.False

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Which of the following is not part of the preliminary preparations for the cutover plan?

• A.Risk assessment
• B.On-site defense
• C.Cutover target
• D.Introduction to the current network

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Which of the following statements about MUX VLAN are correct? (Multiple choice)

• A.Each Group VLAN must be bound to a Principal VLAN
• B.Separate VLAN can communicate with all VLANs in MUX VLAN
• C.Each Separate VLAN must be bound to a Principal VLAN
• D.Principal VLAN can communicate with all VLANs in MUX VLAI

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BGP/MPLS IP VPNs can only use LDP to construct public network tunnels.

• A.True
• B.False

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The IS-IS neighbor between R3 and R1 is not established. According to the information in this figure, what is the possible cause?

• A.The System ID of R3 and R1 are duplicated
• B.The IIH certification of R3 and R1 failed
• C.The circuit-type of the interconnection interface between R3 and R1 does not match
• D.The lS-Level of R3 and R1 do not match

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