In an OSPF routing domain, two routers must be specified as one DR and one BDR in a broadcast or NBMA network with at least two routers.

• A.TRUE
• B.FALSE

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On an OSPF network, LSDBs are used to store LSAs. Common LSAs include router LSAs and network LSAs. Which of the following items is not included in the 3-tuple that is used to uniquely identify an LSA?

• A.LS Sequence Number
• B.Link State ID
• C.Advertising Router
• D.LSType

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RPF has the function of preventing loops in multicast.

• A.TRUE
• B.FALSE

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L2TP does not provide security encryption. Therefore, other security measures, such as IPsec, are required to ensure the security of the entire tunnel for data transmission.

• A.TRUE
• B.FALSE

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Which of the following does not belong to the OSI network management model?

• A.Communication Model
• B.Organizational Structure Model
• C.Management Model
• D.Functional Model

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