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Operating System (OS)

Operating System (OS)
In Microsoft windows, the graphical pattern on the desktop used as background for windows is

Background
Icons
Wall paper
Picture

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Operating System (OS)
The initial value of the semaphore that allows only one of the many processes to enter their critical sections, is

None of these
8
16
1
0

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Operating System (OS)
Which of the following is a disk compression tool?

Defragmenter
Scan disk
None of these
Drive space

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Operating System (OS)
CAD software is most likely to be used by

Magazine Editor
Engineers
Web designer
Project Manager

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Operating System (OS)
What program runs first after computer is booted and loading GUI ?

Authentication
Desktop manager
Windows Explorer
File manager

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Operating System (OS)
The higher versions of the operating systems are so written that programs designed for earlier versions can still be run. What is it called?

Universality
Upward compatibility
None of these
Upgradability
Upward mobility

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