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Q.

A semaphore is a shared integer variable __________

A

that can not drop below zero

B

that can not be more than zero

C

that can not drop below one

D

that can not be more than one

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MCQ

1.

For sharable resources, mutual exclusion ____________

A

is required

B

is not required

C

may be or may not be required

D

none of the mentioned

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2.

A system is in a safe state only if there exists a ____________

A

safe allocation

B

safe resource

C

safe sequence

D

all of the mentioned

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3.

The wait operation of the semaphore basically works on the basic _______ system call.

A

stop()

B

block()

C

hold()

D

wait()

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4.

Serializable schedules are ones where ____________

A

concurrent execution of transactions is equivalent to the transactions executed serially

B

the transactions can be carried out one after the other

C

a valid result occurs after execution transactions

D

none of the mentioned

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5.

The bounded buffer problem is also known as ____________

A

Readers-Writers Problem

B

Dining- Philosophers Problem

C

Producer- Consumer Problem

D

None of the mentioned

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