OSPF supports area authentication and interface authentication. If both authentication modes are configured, Interface authentication takes preference over area authentication.

• A.FALSE
• B.TRUE

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Four routers run ISIS and have established adjacencies. The area IDs and router levels are marked in the following figure. If route leaking is configured on R3, which of the following is the cost of the route from R4 to 10.0.2.2/32?

• A.40
• B.30
• C.80
• D.50

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Which of the following statement regarding the display ospf peer command output is true?

• A.The DR address is 10.1.1.1
• B.Through negotiation during DD packet exchange, the local end becomes the slave.
• C.Router ID indicates that the local router ID Is 10.1.1.1.
• D.Address: 10.1,1.1 Indicates that the local interface address is 10.1.1.1.

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Which of the following TLVs is used by ISIS to describe the IP address of an interface?

• A.129
• B.131
• C.128
• D.132

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Which of the following statements regarding BGP route advertisement are false?

• A.All the BGP routes learned from all BGP peer will be advertised to other BGP peers.
• B.Only the optimal routes preferred by BGP can be advertised to other BGP peers.
• C.By default, the routes learned from an IBGP peer will not be forwarded to other IBGP peers.
• D.Only the routes learned from IGPs can be advertised to other BGP peers.

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