A．Transparent
B．Server
C．Auto
D．Client
E．User
参考答案
正确答案：B
解析：Explanation:VTPModes:IfyouintendtomakeaswitchpartofaVTPmanagementdomain,eachswitchmustbeconfiguredinoneofthreepossibleVTPmodes.TheVTPmodeassignedtoaswitchwilldeterminehowtheswitchinteractswithotherVTPswitchesinthemanagementdomain.ThethreeVTPmodesthatcanbeassignedtoaCiscoswitchincludeservermode,clientmode,andtransparentmode.Eachoftheserolesisoutlinedbelow:ServerMode:OnceVTPisconfiguredonaCiscoswitch,thedefaultmodeusedisServerMode.InanygivenVTPmanagementdomain,atleastoneswitchmustbeinServerMode.WheninServerMode,aswitchcanbeusedtoadd,delete,andmodifyVLANs,andthisinformationwillbepassedtoallotherswitchesintheVTPmanagementdomain.ClientMode:WhenaswitchisconfiguredtouseVTPClientMode,itissimplytherecipientofanyVLANsadded,deleted,ormodifiedbyaswitchinServerModewithinthesamemanagementdomain.AswitchinVTPclientmodecannotmakeanychangestoVLANinformation.TransparentMode:AswitchinVTPTransparentModewillpassVTPupdatesreceivedbyswitchesinServerModetootherswitchesintheVTPmanagementdomain,butwillnotactuallyprocessthecontentsofthesemessages.WhenindividualVLANsareadded,deleted,ormodifiedonaswitchrunningintransparentmode,thechangesarelocaltothatparticularswitchonly,andarenotpassedtootherswitchesintheVTPmanagementdomain.BasedontherolesofeachVTPmode,theuseofeachshouldbemoreorlessobvious.Forexample,ifyouhad15Ciscoswitchesonyournetwork,youcouldconfigureeachofthemtobeinthesameVTPmanagementdomain.AlthougheachcouldtheoreticallybeleftinthedefaultServerMode,itwouldprobablybeeasiertoleaveonlyoneswitchinthisconfiguration,andthenconfigureallremainingswitchesforVTPClientMode.Then,whenyouneedtoadd,delete,ormodifyaVLAN,thatchangecanbecarriedoutontheVTPServerModeswitchandpassedtoallClientModeswitchesautomatically.Incaseswhereyouneedaswitchtoactinarelativelystandalonemanner,ordonotwantittopropagateinformationaboutitsconfiguredVLANs,useTransparentMode.IncorrectAnswers:A.AswitchinVTPTransparentModewillpassVTPupdatesreceivedbyswitchesinServerModetootherswitchesintheVTPmanagementdomain,butwillnotactuallyprocessthecontentsofthesemessages.C,E.ThesearenotvalidVTPmodes.D.ClientmodemerelyacceptschangesmadebytheswitchthatisconnectedandinSERVERmode.