单项选择题
Which one of these statements is true of OSPF type 5 LSAs？（）
A.They are used to summarize area routes to other areas.
B.They are used in not-so-stubby areas to propagate external routes.
C.They are used to notify areas of the ASBR.
D.They are flooded to all areas except stub areas （external route）.
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DuringtheIPv6addressresolution，anodesendsaneighborsolicitationmessageinordertodiscoverwhichofthese？（）
A.The Layer 2 multicast address of the destination node
B.The solicited node multicast address of the destination node
C.The Layer 2 address of the destination node based on the destination IPv6 address
D.The IPv6 address of the destination node based on the destination Layer 2 address -
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WhichofthesetablesisusedbyanLSRtoperformaforwardinglookupforapacketdestinedtoanaddresswithinanRFC4364VPN？（）
A.CEF
B.FIB
C.LFIB
D.IGP -
单项选择题
ArouterisconnectedtoanHDLCcircuitviaaT1physicalinterface.TheSLAforthislinkonlyallowsforasustainedrateof768kb/s.Burstsareallowedforupto30secondsatuptolinerate，withawindowTcof125ms.WhatshouldtheBcandBesettingbewhenusinggenerictrafficshaping？（）
A.Be = 46320000 ，Bc = 96000
B.Be = 768000 ，Bc = 32000
C.Be = 128000 ，Bc = 7680
D.Be = 0 ，Bc = 96000
