Process Synchronization Questions

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1.

When several processes access the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called?

A

dynamic condition

B

race condition

C

essential condition

D

critical condition

Correct Answer: B

None.

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2.

If a process is executing in its critical section, then no other processes can be executing in their critical section. This condition is called?

A

mutual exclusion

B

critical exclusion

C

synchronous exclusion

D

asynchronous exclusion

Correct Answer: A

None.

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3.

Which one of the following is a synchronization tool?

A

thread

B

pipe

C

semaphore

D

socket

Correct Answer: C

None.

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4.

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

Correct Answer: A

None.

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5.

Mutual exclusion can be provided by the __________

A

mutex locks

B

binary semaphores

C

both a and b

D

none of the mentioned

Correct Answer: C

Binary Semaphores are known as mutex locks.

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6.

When high priority task is indirectly preempted by medium priority task effectively inverting the relative priority of the two tasks, the scenario is called __________

A

priority inversion

B

priority removal

C

priority exchange

D

priority modification

Correct Answer: A

None.

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7.

Process synchronization can be done on __________

A

hardware level

B

software level

C

both hardware and software level

D

none of the mentioned

Correct Answer: C

None.

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8.

A monitor is a module that encapsulates __________

A

shared data structures

B

procedures that operate on shared data structure

C

synchronization between concurrent procedure invocation

D

all of the mentioned

Correct Answer: D

None.

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9.

To enable a process to wait within the monitor __________

A

a condition variable must be declared as condition

B

condition variables must be used as boolean objects

C

semaphore must be used

D

all of the mentioned

Correct Answer: A

None.

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10.

Concurrent access to shared data may result in ____________

A

data consistency

B

data insecurity

C

data inconsistency

D

none of the mentioned

Correct Answer: C

A cooperating process is one that can affect or be affected by other processes executing in a system. Cooperating processes can either directly share a logical address space (that is, both code and data) or be allowed to share data only through files or messages. Concurrent access to shared data may result in data inconsistency.

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