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单项选择题

A.Byperfornubgashowipinterfacetoseethetypeandsourceofth……

Howwouldyoucharacterizethesourceandtypeinadenialofserviceattackonarouter？（）

A.Byperfornubgashowipinterfacetoseethetypeandsourceoftheattackbasedupontheaccess-listmatches
B.Byperformingashowinterfacetoseethetransmittedload"txload"andreceiveload"rxload"；ifthe
C.Bysettingupanaccess-listtopermitallICMP，TCP，andUDPtrafficwiththelogorlog-input
D.Byapplyinganaccess-listtoallincomingandoutgoinginterfaces，turningoffroute-cacheonall
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热门试题

单项选择题WhichoftheserecommendationsismostappropriateforthecorelayerintheCiscoCampus Architecture？（）

A.UtilizeLayer3switching
B.Utilizesoftwareacceleratedservices
C.Aggregateendusersandsupportafeature-richenvironment
D.Performpacketmanipulationandfilteringatthecorelayer
E.Useredundantpointto-pointLayer2interconnectionswhenwhereisalinkornodefailure.

单项选择题WhichstatementdescribestheWLCv5.2deliveryofamulticastpacketfromawiredPCsourceon VLAN_XtoarespectivewirelessclientusingSSID_X,usingaWLANcontrollerenabledformulticast?（）

A.ApacketisdeliveredtoCiscoWLCandforwardedviamulticasttoallofitsassociatedAPs,andfinally
B.
C.ApacketisdeliveredtoCiscoWLCandforwardedviaunicasttoallofitsassociatedAPs,andfinallyto
D.
E.ApacketisdeliveredtoCiscoWLCandforwardedviamulticasttoallofitsassociatedAPs,discarded
F.
G.ApacketisdeliveredtoCiscoWLCandforwardedviaunicasttoallofitsassociatedAPs,discardedat
H.
I.ApacketisdeliveredtoCiscoWLCandforwardedviamulticasttoallofitsassociatedAPs,discardedatAPswithoutSSID_Xjoinedwirelessclients,andforwardedatAPswithSSID_Xjoinedwirelessclients
J.
K.ApacketisdeliveredtoCiscoWLCandforwardedviaunicasttoallofitsassociatedAPs,discardedat

单项选择题出于成本和安全的考虑，家庭路由器应选择以下哪种认证类型?()

A.WPA/WPA2
B.WEP2
C.WPA-PSK/WPA2-PSK
D.WEP

单项选择题目前BRAS承载家庭宽带最常用的认证方式是PPPOE，下列关于PPPoE的说法正确的是()

A.PPPoE协议将以太网帧封装在ppp报文之内，提供点对点的连接
B.PPPoE协议分为三个不同阶段：Discovery阶段、Offer阶段和PPP
B.PPPoE与PPP协议不同的是，PPPoE的Discovery阶段建立的是一种Client/Server关系，而PPP建立的是一种对等关系。通过Discovery阶段，一个主机(Client)可以发现一个接入集中器(Server)，在Discovery阶段正常结束后，主机和接入集中器就可以通过MAC地址和会话标识来建立PPPoE会话
D.PPPoE和PPP的协商过程完全不同

单项选择题WhatistheWMMuserpriorityofthepacketsgoingdownstreamtotheclientwhentheclientdoesnot supportTSPECbuttheCiscoWLChasACMenabledandWLANpriorityissettoPlatinum?（）

A.background
B.besteffort
C.voice
D.video