AuserconnectstothecompanysintranetserverviaaVPNconnectionfromasmalloffice\/homeoffice（SOHO）usingthebroadbandservice.Oneday，theusercannotsuccessfullyconnecttotheVPNandreceivesanerrormessagethatstates\”Usernameandpasswordareinvalidonthedomain.\”Whichofthefollowingshouldbedonetocorrectthisproblem？（）
A.CallthecorporatehelpdesktohavetheVPNserverrebooted
B.Re-entertheusernameandpasswordintheVPNconnectionandreconnect
C.CallthebroadbandInternetprovidertoreplacetheSOHOrouterwithanewermodel
D.PingthecorporateVPNservertoensureitisonline
参考答案：B
