SecureShell(SS H)isacryptographicnetworkprotocolfor()remoteloginandothersecurenetworkservicesoveran()network.Thestandard()portforSSHis22.Thebestknownexampleapplicationisforremotelogintocomputersystemsbyusers. SSHprovidesasecurechanneloveraninsecurednetworkina()architecture,connectinganSSHclientapplicationwithanSSHserver.Commonapplicationsincluderemotecommand-lineloginandremotecommandexecution,butanynetworkservicecanbesecuredwithSS H.Theprotocolspecificationdistinguishesbetweentwomajorversions,referredtoasSSH-1andSSH-2. Themostvisibleapplicationoftheprotocolisforaccesstoshellaccountson(请作答此空)operatingsystems,butitseessomelimiteduseonWindowsaswell.In2015,MicrosoftannouncedthattheywouldincludenativesupportforSSHinafuturerelease.
A.Windows B.Unix-like C.MS-DOS D.Graphical正确答案B
