单项选择题

Anadministratorreceivesacallfromanenduserreportingthattheapplicationtheyareusing keepsgivingthemanerroronport23.Whichofthefollowingisbeingused？（）

A.SSH
B.RemoteDesktopConnection
C.Telnet
D.VPN

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单项选择题

Anadministratorisinchargeofaserverthathousesvariousapplications.Whichofthefollowing BESTexplainsthisservertype？（）

A.DedicatedApplicationServer
B.FileServer
C.SharedApplicationServer
D.Peer-to-PeerApplicationServer

单项选择题

WhenrunningaWindowsserver，whichoptionisusedwiththepingcommandtodefinethenumberof packetstransmitted？（）

A.-n
B.-a
C.-r
D.-v