If the OSPF neighbor relationship fails to be established, you can run the display ospf error command to view the information. If the following information is displayed, what may be the cause of the failure establishment of the neighbor?

• A.Inconsistent network mask
• B.Router ID conflict
• C.Inconsistent Hello Interval and Dead Interval
• D.Inconsistent verification types

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Which descriptions are correct about the Next Hop attribute of BGP? (Multiple Choice)

• A.There may be no Next_Hop attribute in the Update message.
• B.The BGP speaker does not change the next hop attribute of the routing information when it advertises a route to the EBGP peer.
• C.Not necessarily the IP address of the neighbor device
• D.Must exist in the Update message

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Which of the following can't inject local routes into BGP? (Multiple choices)

• A.Through import command
• B.Through the network command
• C.Through summary automatic command
• D.Receive Routes from Peers

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Which of the following routing tools that are not only used for BGP routing protocols?  (Multiple choice)

• A.route-policy
• B.as-path-filter
• C.IP- Prefix
• D.community-filter

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The correct description of the prefix list is? (Multiple choices)

• A.The prefix list is used to filter IP prefix. It also can match the prefix number and prefix length at the same time.
• B.Prefix list can be used for packet filtering.
• C.The prefix list is used to filter IP prefix. It can't match prefix number and prefix lengths at the same time.
• D.The prefix list can't be used for packet filtering.

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