单项选择题
A.ypbind
B.ypserv
C.ypwhich
D.yppasswdd
单项选择题 Whenrunonamachinecalledclient，whichofthefollowingcommandswouldmountthe/usr/local/bindirectoryfromthehostmachineoverthe/home/bindirectoryonclient？（）
单项选择题 InaDNSenvironment，thezonefilethatmapshostnamestoIPaddress（sometimescalledthenamed.hostsfile），iscreatedonwhichofthefollowingservers？（）
单项选择题 WhatisthefirststepinsettingupaPrimaryDomainNameServer？（）