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Operating System (OS)

Operating System (OS)
....... show characteristics with both hardware and software

Data
None
Software
Operating system

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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

8
0
None of these
1
16

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Operating System (OS)
Which of the following is not applications software?

UNIX
Word processing
Spreadsheet
Desktop publishing
None of these

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Operating System (OS)
Which of the following is helpful in evaluating applications software what will best suit your needs?

All of these
computer magazines
recommendations by other users
None of these
objective software reviews

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

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

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Operating System (OS)
Which of the key is used to close the active window?

Alt+F6
Ctrl+F5
Alt+F4
Ctrl+F4

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