单项选择题
A.mktcpip -h hostname -a 9.47.53.x -m 255.255.255.64 -i en0 -g 9.3.230.1
B.ifconfig en0 netmask 255.255.255.64
C.chdev -l en0 -a netmask=255.255.255.192
D.ifconfig en0 netmask 0xffffffc0
单项选择题 A state agency has recently deployed a new critical application on an 8-way p570. The state government has just mandated that all agencies have disaster recovery plans to recover critical applications in acceptable periods of time with no loss of performance. Which of the following will best address this new requirement（）
单项选择题 ASystempadministratorhasbeeninstructedtoverifythatallfilesetshaveallrequiredrequisitesandarecompletelyinstalled.Whichofthefollowingcommandswillprovidethisinformation（）
单项选择题 WhatcommandisusedtocreateaSEAdeviceoverphysicalethernetadapterent0andvirtualethernetadaptersent1（PVID1）andent2（PVID2）withdefaultIDof1（）