Process Synchronization Questions

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71.

The circular wait condition can be prevented by ____________

A

defining a linear ordering of resource types

B

using thread

C

using pipes

D

all of the mentioned

Correct Answer: A

None.

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72.

Which one of the following is the deadlock avoidance algorithm?

A

banker's algorithm

B

round-robin algorithm

C

elevator algorithm

D

karn's algorithm

Correct Answer: A

None.

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73.

For an effective operating system, when to check for deadlock?

A

every time a resource request is made

B

at fixed time intervals

C

every time a resource request is made at fixed time intervals

D

none of the mentioned

Correct Answer: C

None.

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74.

A problem encountered in multitasking when a process is perpetually denied necessary resources is called ____________

A

deadlock

B

starvation

C

inversion

D

aging

Correct Answer: B

None.

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75.

Which one of the following is a visual ( mathematical ) way to determine the deadlock occurrence?

A

resource allocation graph

B

starvation graph

C

inversion graph

D

none of the mentioned

Correct Answer: A

None.

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76.

To avoid deadlock ____________

A

there must be a fixed number of resources to allocate

B

resource allocation must be done only once

C

all deadlocked processes must be aborted

D

inversion technique can be used

Correct Answer: A

None.

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77.

The number of resources requested by a process ____________

A

must always be less than the total number of resources available in the system

B

must always be equal to the total number of resources available in the system

C

must not exceed the total number of resources available in the system

D

must exceed the total number of resources available in the system

Correct Answer: C

None.

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78.

The request and release of resources are ___________

A

command line statements

B

interrupts

C

system calls

D

special programs

Correct Answer: C

None.

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79.

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

Correct Answer: B

Multiple threads can compete for shared resources.

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80.

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

Correct Answer: D

None.

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