Using NAT technology, only the network layer information (IP address) in the data packet can be translated.

• A.TRUE
• B.FALSE

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The Backup port in RSTP can replace the failed root port.

• A.TRUE
• B.FALSE

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As shown in the figure, router R has static routes to three network segments of Site A, Site B, and Site C respectively. The administrator needs to configure to import the routes of Site A and Site B into the OSPF Domain. Please set the commands for configuring RE are completed below.
1: ______
2: ______
3: ______

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There can be multiple nodes under a route-policy. Different nodes are identified by node. Each node can have multiple if-match and apple clauses.
Which of the following descriptions is wrong? (Multiple choice)

• A.The relationship between the if-match clauses under each node is " or "
• B.There is an " or " relationship between different nodes
• C.The relationship between the if-match clauses under each node is " and "
• D.There is an " and " relationship between different nodes

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The four routers run IS-IS and have established adjacency. The area numbers and router levels are shown in the figure.

Which of the following is correct?

• A.The LSP of R4 does not exist in the LSDB of router R1
• B.The LSP of R3 does not exist in the LSDB of the R2 router
• C.The LSP of R4 does not exist in the LSDB of the R2 router
• D.The LSP of R4 does not exist in the LSDB of R3 router

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