单项选择题

WhichofthefollowingisnotacharacteristicofCiscoExpressForwarding？（）

A.Theadjacencytableispopulatedfromarouter’sARPcache
B.CEFdoesnotrequirethefirstpacketofadataflowtobeprocessswitched
C.CEFmaintainstheForwardInformationBaseandtheadjacencytable
D.CEFcanbeenabledwiththeinterfacecommandipcef
E.TheFIBispopulatedfromarouter’sIProutingtable
F.OnmostrouterplatformsCEFisenabledbydefault

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单项选择题

WhichofthefollowingvirtualMACaddressesiscorrectfortheHSRPgroup22？（）

A.0000.0c70.ac22
B.0000.0c07.22ac
C.0000.0c07.acl6
D.0000.0c07.ac22
E.0000.0c70.cala
F.0000.0d22.ac07

单项选择题

WhichofthefollowingoptionsrepresentsthecorrectsequenceofDHCPmessagesafteraclientinitiallyboots？（）

A.DHCPREQUEST，DHCPOFFER，DHCPDISCOVER，DHCPACK
B.DHCPDISCOVER，DHCPOFER，DHCPREQUEST，DHCPACK
C.DHCPOFFER，DHCPACK，DHCPREQUEST，DHCPDISCOVER
D.DHCPDISCOVER，DHCPREQUEST，DHCPOFFER，DHCPACK
E.DHCPREQUE5T，DHCPDISCOVER，DHCPOFFER，DHCPACK
F.DHCPDISCOVER，DHCPACK，DHCPREQUEST，DHCPOFFER