Operating System MCQs

1019 MCQs  (Page 13 of 102)

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The backing store is generally a ____________
A. Fast disk
B. Disk large enough to accommodate copies of all memory images for all users
C. Disk to provide direct access to the memory images
D. All of the mentioned
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The ________ consists of all processes whose memory images are in the backing store or in memory and are ready to run.
A. Wait queue
B. Ready queue
C. Cpu
D. Secondary storage
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The _________ time in a swap out of a running process and swap in of a new process into the memory is very high.
A. Context €? switch
B. Waiting
C. Execution
D. All of the mentioned
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The major part of swap time is _______ time.
A. Waiting
B. Transfer
C. Execution
D. None of the mentioned
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Swap space is allocated ____________
A. As a chunk of disk
B. Separate from a file system
C. Into a file system
D. All of the mentioned
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What will happen if a non-recursive mutex is locked more than once?
A. Starvation
B. Deadlock
C. Aging
D. Signaling
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What is a semaphore?
A. Is a binary mutex
B. Must be accessed from only one process
C. Can be accessed from multiple processes
D. None of the mentioned
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What are the two kinds of semaphores?
A. Mutex & counting
B. Binary & counting
C. Counting & decimal
D. Decimal & binary
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What is a mutex?
A. Is a binary mutex
B. Must be accessed from only one process
C. Can be accessed from multiple processes
D. None of the mentioned
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At a particular time of computation the value of a counting semaphore is 7.Then 20 P operations and 15 V operations were completed on this semaphore. The resulting value of the semaphore is? (GATE 1987)
A. 42
B. 2
C. 7
D. 12
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Word of the Day
12 Jul
Obdurate
stubbornly refusing to change one’s opinion or course of action.
ضدی، بدکار، سنگدلی

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