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2025年软件认证工程师考试-思科认证考试近5年真题荟萃附答案

第I卷

一.参考题库(共80题)

1.Anetworkadministratorneedstoconfigureportsecurityonaswitch.whichtwostatementsaretrue?（）

A、Thenetworkadministratorcanapplyportsecuritytodynamicaccessports

B、Thenetworkadministratorcanconfigurestaticsecureorstickysecuremacaddressesinthevoicevlan.

C、Thestickylearningfeatureallowstheadditionofdynamicallylearnedaddressestotherunningconfiguration.

D、ThenetworkadministratorcanapplyportsecuritytoEtherChannels.

E、Whendynamicmacaddresslearningisenabledonaninterface,theswitchcanlearnnewaddresses,uptothemaximumdefined.

2.WhenaswitchportisusedasaVLANtrunk,whichofthefollowingtrunkmodesarevalid?（）

A、Blocking

B、Auto

C、Desirable

D、On

E、Transparent

F、Learning

3.Two?routers?configured?to?run?BGP?have?been?connected?to?a?firewall，one?on?the?inside?interface?and?one?on?the?outside?interface.?BGP?has?been?configured?so?the?two?routers?should?peer，including?the?correct?BGP?session?endpoint?addresses?and?the?correct?BGP?session?hop-count?limit?（EBGP?multihop）.?What?is?a?good?first?test?to?see?if?BGP?will?work?across?the?firewall？（）

A、Attempt?to?TELNET?from?the?router?connected?to?the?inside?of?the?firewall?to?the?router?connected?to?the?outside?of?the?firewall.If?telnet?works，BGP?will?work，since?telnet?and?BGP?both?use?TCP?to?transport?data

B、Ping?from?the?router?connected?to?the?inside?interface?of?the?firewall?to?the?router?connected?to?the?outside?interface?of?the?firewall.If?you?can?ping?between?them，BGP?should?work，since?BGP?uses?IP?to?transport?packets

C、There?is?no?way?to?make?BGP?work?across?a?firewall?without?special?configuration，so?there?is?no?simple?test?that?will?show?you?if?BGP?will?work?or?not，other?than?trying?to?start?the?peering?session

D、There?is?no?way?to?make?BGP?work?across?a?firewall

4.You?a