IPv6 introduces Solicited-Node address, which of the following description about the address is correct?

• A.This is a specific address, which is used to resolve MAC addresses in ARPV6.
• B.IPv6 introduces Solicited-Node address to support IPV6 multicast.
• C.The Solicited-Node address on the router interface is automatically generated, and there can be multiple.
• D.If the Solicited-Node address is not configured , the router will automatically generate one on each interface.

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As shown in the following figure, a part of the LSP of the LSDB of a router is shown in the first line of the figure. First received a new LSP, the second hop in the following picture, which of the following statement is wrong?

• A.If it is a broadcast network, the DIS will include the summary information of the LSP in the next CSNP packet
• B.This router will ignore the LSP received from the neighbor.
• C.The router will put the newly received LSP into the LSDB.
• D.If it is a point-to-point network, this router will send PSNP

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Which of the following does the digital certificate not contain?

• A.Digital signature
• B.Issuer
• C.Public key information
• D.Digital envelope

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The association between LDP and IGP refers to the suppression of the issuance of reachable routes through IGP. To ensure that the LDP and IGP linkages complete network convergence. Make the IGP and LDP keep the path consistent. Minimize the loss of traffic and improve the reliability of the entire network.

• A.False
• B.True

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Regarding the introduction of routes, which of the following description is wrong?

• A.After ISIS's level-2 network route is imported to the level-1 network, if the import policy is not manually configured, a routing loop is formed.
• B.By default, the default metric of the external route redistributed by OSPF is 1, and the imported external route type is Type2.
• C.bgp supports both import and network when generating routes. Network mode is more accurate.
• D.Introducing IBGP routes in OSPF may cause routing loops.

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