单项选择题
A.nfsd
B.ftpd
C.telnetd
D.pop3d
单项选择题 ToexaminetheExhibit，presstheExhibitbutton.Thesystemadministratornoticesasystemwithroutingcannotcommunicatewithasystemwithanipaddress192.24.34.6.Usingtheinformationprovidedintheexhibit，whatisthemostlikelyreason？（）
单项选择题 Whichofthefollowinglineswillbeaddedtothefile/usr/lib/uucp/DevicesontheSLIPservermachineforaSLIPconnectionontty1？（）