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MCQ

Q.

If the semaphore value is negative ____________

A

its magnitude is the number of processes waiting on that semaphore

B

it is invalid

C

no operation can be further performed on it until the signal operation is performed on it

D

none of the mentioned

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MCQ

1.

The segment of code in which the process may change common variables, update tables, write into files is known as ____________

A

program

B

critical section

C

non

D

synchronizing

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2.

What are Multithreaded programs?

A

lesser prone to deadlocks

B

more prone to deadlocks

C

not at all prone to deadlocks

D

none of the mentioned

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3.

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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4.

For a deadlock to arise, which of the following conditions must hold simultaneously?

A

Mutual exclusion

B

No preemption

C

Hold and wait

D

All of the mentioned

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5.

All unsafe states are ____________

A

deadlocks

B

not deadlocks

C

fatal

D

none of the mentioned

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