Operating System MCQs

A. Wait & signal
B. Hold & wait
C. Signal & hold
D. Continue & signal

A. Suspended until another process invokes the signal operation
B. Waiting for another process to complete before it can itself call the signal operation
C. Stopped until the next process in the queue finishes execution
D. None of the mentioned

A. Puts the system into a deadlock state
B. Suspends some default process execution
C. Nothing happens
D. The output is unpredictable

A. Transaction
B. Operation
C. Function
D. All of the mentioned

A. Committed, destroyed
B. Aborted, destroyed
C. Committed, aborted
D. None of the mentioned

A. Safety
B. Protection
C. Roll €? back
D. Revert €? back

A. To ensure atomicity
B. To keep data consistent
C. That records data on stable storage
D. All of the mentioned

A. A memory
B. A system
C. A disk
D. A log record

A. Before the corresponding log record is written out to stable storage
B. After the corresponding log record is written out to stable storage
C. Until the whole log record has been checked for inconsistencies
D. All of the mentioned

A. Idempotent
B. Easy
C. Protected
D. All of the mentioned