A．ErlangB B．ErlangC C．AHT*BHCA D．VGports+IVRports
资本原始积累（名词解释)
每个法兰头引入的衰减约为（）
A.1.5db B.0.5db C.1db D.0db
生态文明的核心是正确处理()的关系。
A．人与人 B．人与社会 C．人与自然 D．人与人工自然物
WhatistheminimumconfigurationyoumustdoinordertoenablemulticastsupportontheCiscoWirelessLANControllerv5.2？（）
A.EnabletheIGMPsnoopingcapabilityanddefinetheIGMPtimeoutperiod. B.SettheEthernetmulticastmodetoEnabled，enabletheIGMPsnoopingcapability，anddefinetheIGMP timeoutperiod. C.SetthemulticastmonitorfunctiontoEnabled，enabletheIGMPsnoopingcapability，anddefinethe mandatorydataratetotheminimumvaluesupported. D.SettheEthernetmulticastmodetoMulticastanddefinethemulticastgroupaddress.
Whichtwowirelesssecuritystatementsaretrue？（）
A．ATACACS+serverisrequiredtoimplement802.1x. B．MICprotectsagainstman-in-the-middleandreplayattacks. C．The802.1xstandardprovidesencryptionservicesforwirelessclients. D．TheAES（symmetricblockcipher）isspecifiedintheIEEE802.11ispecification. E．TheIEEE802.11ispecificationusesRC4asitsencryptionmechanism. F．WPArequiresTKIPandAESasencryptionmethods.
