单项选择题

Which of the following commands would MOST likely be used to see where a loss of connectivity between two devices on a network is located?（）

A.tracert
B.netstat
C.nslookup
D.ping

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单项选择题

Which of the following needs to be done before a hard drive can be formatted?（）

A.Labeled
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C.Initialized
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单项选择题

Which of the following percentages is required for Disk Defragmenter to fully defragment thevolume?（）

A.5%
B.15%
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单项选择题

A technician is working on a PC that may have malware. Which of the following should thetechnician try FIRST?（）

A. Educate the end user about how a computer becomes infected.
B. Perform a clean install of the OS.
C. Boot the PC in Safe Mode.
D. Quarantine all infected files.