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Operating System (OS)

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

16
1
0
8
None of these

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Operating System (OS)
Which of the following are loaded in safe mode ?

VGA drive
Mouse driver
All of the listed here
Keyboard driver

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Operating System (OS)
Block or buffer caches are used

to handle interrupts
to speed up main memory read operation
to increase the capacity of main memory
to improve disk performance
None of these

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Operating System (OS)
Which of the following is not a mode in starting windows ?

Turbo mode
Safe mode
Command prompt
Normal mode

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Operating System (OS)
Which of the following operating system reads and reacts in actual time?

Time Sharing System
Real Time System
Quick Response System
Batch Processing System

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Operating System (OS)
Once text has been cut to the clipboard, you can ...... that text into another document

Copy
Transfer
Paste
None of these

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