题目内容

_____ is an operating system widely used by servers on the web, mainframe computers, and very powerful personal computers.

A. UNIX
B. Lotus
C. Windows
D. Mac OS

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_____ refers to the process whereby a single physical computer can support multiple operating systems.

A. Convergent device
B. Virtualization
C. Dependency
D. File compression

Troubleshooting or _____ programs recognize and correct problems.

A. backup
B. virtualization
C. diagnostic
D. file compression

Disk Cleanup, File History, and Disk Defragmenter are all examples of _____ programs.

A. device driver
B. operating system
C. language translator
D. utility

_____ programs reduce the size of files so they require less storage space.

A. File compression
B. Device driver
C. Virtualization
D. Language translator