Which of the following description of BGP features is false?

• A.BGP is a link state protocol
• B.BGP is an external routing protocol, which used to transfer routing information between ASs
• C.BGP has rich routing filtering and routing strategies
• D.BGP supports CIDR

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If the DR Priority is set to 0, then in the OSPF routing domain, the router is allowed to be elected as DR or BDR, but with the lowest priority.

• A.TRUE
• B.FALSE

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Which of the following trees have multi-channel protocols? (Multiple choice)

• A.H.323
• B.FTP
• C.SMTP
• D.Telnet

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When configuring dual-link hot backup, the engineer configured the CAPWAP heartbeat detection interval to be 20 seconds, and the dual-link backup function is enabled, then what is the time for the AP detecting that the active link times out to perform the active/standby switchover?

• A.20 seconds
• B.90 seconds
• C.60 seconds
• D.75 seconds

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In order to avoid inter-area loops, OSPF stipulates that it is not allowed to advertise routing information directly between two non-backbone areas. It is only allowed to advertise routing information within a regional city or between a backbone area and a non-backbone area. Therefore, each district border router (ABR) must be connected to the backbone area

• A.False
• B.True

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