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Operating System (OS)

Operating System (OS)
What is the initial value of the semaphore to allow only one of the many processes to enter their critical section?

16
8
None of these
1

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Operating System (OS)
Supervisor state is

never used
entered by programs when they enter the processor
required to perform any I/O
None of these
only allowed to the operating system

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Operating System (OS)
The part of machine level instruction, which tells the central processor what has to be done, is

None of these
Operation code
Locator
Flip-Flop
Address

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Operating System (OS)
Which of the following software types is used to simplify using systems software?

timesharing
spreadsheet
multitasking
None of these
operating environment

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Operating System (OS)
...... runs on a computer hardware and serves as a platform for other system to run on

All of above
Application system
System software
Operating system

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Operating System (OS)
Multi programming systems ......

Are easier to develop than single programming system
Execute each job faster
Execute more jobs in the same time period
Are used only by large mainframe computer

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