單項選擇題What action will a BGP route reflector take when it receives a prefix marked with the community attribute NO ADVERTISE from a client peer？（）

A.It will advertise the prefix to all other client peers and non-client peers.
B.It will not advertise the prefix to EBGP peers.
C.It will only advertise the prefix to all other IBGP peers.
D.It will not advertise the prefix to any peers.


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1.多項選擇題Which two OSPF LSA types are new in OSPF version 3？ （）

A.Link
B.NSSA external
C.Network link
D.Intra-area prefix
E.AS domain

3.多項選擇題Which two options does Cisco PfR use to control the entrance link selection with inbound  optimization？（）

A.Prepend extra AS hops to the BGP prefix.
B.Advertise more specific BGP prefixes（longer mask）.
C.Add（prepend）one or more communities to the prefix that is advertised by BGP.
D.Have BGP dampen the prefix.

4.多項選擇題Which two are effects of connecting a network segment that is running 802.1D to a network  segment that is running 802.1w？（）

A.the entire network switches to 802.1D and generates BPDUs to determine root bridfe status.
B.A migration delay of three seconds occurs when the port that is connected to the 802.1D bridge comes up
C.The entire network reconverges and a unique root briddge for the 802.1D segment， and a root bridge for the 802.1W segment， is chosen
D.the first hop 802.1w switch that is connected to the 802.1D runs entirely in 802.1DCompatibility mode and converts the BPDUs to either 802.1D or 802.1W segments of the network
E.Classic 802.1D timers， Such as forward Delay and Max-age， will only be used as a backup， and will not be necessary if point-to-point links and edge prots are properly identified and set by the administrator.

5.多項選擇題Which two statements are true about traffic shaping？（）

A.Out-of-profile packets are queued.
B.It causes TCP retransmits.
C.Marking/remarking is not supported.
D.It does not respond to BECN and ForeSight Messages.
E.It uses a single/two-bucket mechanism for metering.

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