单项选择题

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

A.5%
B.15%
C.25%
D.50%

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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.

单项选择题

Which of the following errors are caused by leaving a floppy disk in the drive when a computer is powered on?（）

A. Random bluescreen error
B. Inaccessible boot drive
C. Missing NTLDR
D. Invalid boot disk

单项选择题

Which of the following is the BEST way to prevent social engineering tactics?（）

A. End user training
B. Antivirus software
C. Group policy
D. Encryption