As shown in the picture, which of the following statements is correct?

• A.R1 and R2 can establish an adjacency relationship, but cannot complete route calculation.
• B.R1 and 2 cannot establish an adjacency system, because the network configuration of the interface is inconsistent.
• C.R1 and R2 can establish an adjacency relationship and complete route calculation.
• D.R1 and R2 cannot establish an adjacency relationship because the OSPF process numbers are inconsistent.

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In the BGP protocol, which of the following BGP attributes can be used to mark routes with certain common characteristics so that other BGP routers can identify them?

• A.AS-path
• B.Community
• C.MED
• D.Origin

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OSPF routes require various LSAs to maintain. Please match the names and responsibilities of the following LSAs.

Correct Answer:

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See the following figure. RTA, RTB, RTC, and RTD are in the same AS and establish IBGP peer relationships through direct links. RTB an RTC are route reflectors (RRs), RTA and RTC are the RR clients of RTB, and RTB and RTD are the RR clients of RTC. If RTA advertises the route 10.1.1.0/24 to the BGP process, the Originator ID of the BGP route received by RTD is------------------.

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ACLs are a common matching tool in routing policies. An ACL can be configured on a router to match routes.

• A.TRUE
• B.FALSE

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