单项选择题
A.broadcast， multicast
B.unicast， broadcast
C.broadcast， unicast
D.multicast， unicast
E.broadcast， broadcast
F.unicast， multicast
单项选择题 WhichofthefollowingeventswouldnotexplainexcessiveCPUutilization？（）
多项选择题 WhichofthefollowingstatementsaretrueforroutersbutnottrueforLayer3Ethernetswitches？（Chooseallthatapply.）（）
多项选择题 YouareusingNBARtogetastatisticalbaselinefortheapplicationsrunningonyournetworkbutdiscoverthatsomeapplicationsarenotbeingrecognized.Whichofthefollowingarepossiblesolutions？（Chooseallthatapply.）（）