The routing selection tool route-policy can filter and set BGP attributes based on predefined conditions, so it is often used to define policies for BGP Peer and is often used during route generation. By default, all unused Routes from the North Configuration are all rejected through route-policy.

• A.FALSE
• B.TRUE

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The following is the output information of a router.

Which is the correct description of this information?

• A.The community attribute value carried by the destination network segment 5.1.1.0/24 is no-advertise, indicating that the routing entry cannot be advertised outside the local AS
• B.The community attribute value carried by the destination network segment 1.1.1.0/24 is no-export, indicating that the routing entry cannot be advertised to any BGP neighbors
• C.The community attribute value carried by the destination network segment 5.1.1.0/24 is no-advertise, indicating that the routing entry cannot be advertised to any other BGP peers
• D.The community attribute value carried by the destination network segment 1.1.1.0/24 is no-export, indicating that the routing entry can be advertised to any BGP neighbor

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As shown in the figure below, RTC announces 10.1.1.0/24 into BGP, and RTC is the client of route reflector RTB. Then router RT() will not receive the route entry
10.1.1.0/24 reflected by RTB.

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Regarding the information description of OSPF's ASBR Summary-LSA, which of the following is wrong?

• A.Link State ID indicates the Router ID of ASBR
• B.The Advertising Router field in the ASBR-Summary-LSA is the same for all areas
• C.Metric indicates the OSPF cost from the ABR to the ASBR
• D.Advertising Router indicates the Router ID of the ABR

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Which of the following description about the prefix list is wrong?

• A.The prefix list has a stronger matching function for routing masks than the access control list
• B.The prefix list can be used to filter IP prefixes
• C.The prefix list can be used for packet filtering
• D.The prefix list can match the prefix number and prefix length

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