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Operating System (OS)

Operating System (OS)
To display system boot menu which of the following key you must press ?

F7
F8
F5
F4

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Operating System (OS)
The most common systems security method is

firewall
encryption
None of these
passwords
All of these

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Operating System (OS)
You can move a window to a different position on your screen by dragging it by its

Move handle
Status bar
Title bar
Tail

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Operating System (OS)
Desktop is a

Screen saver
Display program
Working with my document
Provides work space

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Operating System (OS)
Which of the following is a type of systems software used on microcomputers?

None of these
MS-DOS
All of these
Unix
PC-DOS

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Operating System (OS)
Four necessary conditions for deadlock to exist are: mutual exclusion, no-preemption, circular wait and

buffer overflow
None of these
hold and wait
race around condition
deadlock avoidance

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