单项选择题
A.rcp
B.tftp
C.ping
D.rpcinfo
单项选择题 Anadapterstatedoesnotshowavailableafterareboot.Whichofthefollowingisthemostprobablecause？（）
单项选择题 Ahostistobepartofaverysmallprivatenetwork，whichwillneverbeconnectedtoanyothernetworks.Whichofthefollowingnameresolutionschemeswouldbetheeasiesttoimplement？（）
单项选择题 Theinternetaddress198.102.27.120representswhichofthefollowingaddresses？（）