单项选择题
A system administrator is trying to troubleshoot company wide email problems that may be related to DNS. Which of the following network tools would be MOST useful to determine if it is a DNS issue？（）
A.netstat
B.tracert
C.nslookup
D.ping
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相关考题
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单项选择题
Theserverroomthatanadministratormanageshasjustcaughtfire.Whichofthefollowingisthe FIRSTthingthattheadministratorshoulddo？（）
A. Evacuate all personnel.
B. Notify staff of the potential service outage.
C. Use fire suppression techniques until the fire department arrives.
D. Grab the backup tapes and exit the server room. -
单项选择题
A user cannot access files on /deps/it directory, the administrator verifies permissions are set for the directory. Which of the following actions need to be performed to only grant read access to the user on the IT directory?（）
A. Set folder permissions to 760.
B. Set folder permissions to 770.
C. Set folder permissions to modify
D. Set folder permissions to full control -
单项选择题
Atechnicianisunabletoejectatapefromadrivewhenpressingtheejectbutton.Whichofthe followingisMOSTlikelythecause？（）
A.Corrupt OS
B.Array is rebuilding
C.Driver problem
D.Drive failure
