多项选择题
A.Port 80
B.Port 21
C.Port 25
D.Port 81
单项选择题 Youcreateanewdial-upconnectiontoconnecttotheInternet.YouconfiguretheInternetconnectiontoenableInternetConnectionSharing.However，youcannotseeorconnecttoanysharedresourceonyournetwork.Whatshouldyoudo？（）
单项选择题 YouareattemptingtoconnecttoyourISP.YouviewthestatuschangefromDialingtoVerifyingusernameandpassword.Afterseveralseconds，thestatuschangestoDisconnecting.Youarethendisconnectedfromthecomputeryoudialed.Youverifythatyourusernameandpasswordareenteredcorrectly.YouwanttoenableyourComputertoconnecttoyourISPcorrectly.Whatshouldyoudo？（）
单项选择题 FromyourWindows2000Professionalcomputer，youneedtomapdriveGtothedefaultadministrativeshareondriveCofaservernamedsrv01.Whichcommandcanyouuse？（）