Process Synchronization Questions

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11.

A situation where several processes access and manipulate the same data concurrently and the outcome of the execution depends on the particular order in which access takes place is called ____________

A

data consistency

B

race condition

C

aging

D

starvation

Correct Answer: B

None.

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12.

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

Correct Answer: B

None.

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13.

Which of the following conditions must be satisfied to solve the critical section problem?

A

Mutual Exclusion

B

Progress

C

Bounded Waiting

D

All of the mentioned

Correct Answer: D

None.

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14.

Mutual exclusion implies that ____________

A

if a process is executing in its critical section, then no other process must be executing in their critical sections

B

if a process is executing in its critical section, then other processes must be executing in their critical sections

C

if a process is executing in its critical section, then all the resources of the system must be blocked until it finishes execution

D

none of the mentioned

Correct Answer: A

None.

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15.

Bounded waiting implies that there exists a bound on the number of times a process is allowed to enter its critical section ____________

A

after a process has made a request to enter its critical section and before the request is granted

B

when another process is in its critical section

C

before a process has made a request to enter its critical section

D

none of the mentioned

Correct Answer: A

None.

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16.

A minimum of _____ variable(s) is/are required to be shared between processes to solve the critical section problem.

A

one

B

two

C

three

D

four

Correct Answer: B

None.

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17.

In the bakery algorithm to solve the critical section problem ____________

A

each process is put into a queue and picked up in an ordered manner

B

each process receives a number (may or may not be unique) and the one with the lowest number is served next

C

each process gets a unique number and the one with the highest number is served next

D

each process gets a unique number and the one with the lowest number is served next

Correct Answer: B

None.

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18.

An un-interruptible unit is known as ____________

A

single

B

atomic

C

static

D

none of the mentioned

Correct Answer: B

None.

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19.

TestAndSet instruction is executed ____________

A

after a particular process

B

periodically

C

atomically

D

none of the mentioned

Correct Answer: C

None.

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20.

Semaphore is a/an _______ to solve the critical section problem.

A

hardware for a system

B

special program for a system

C

integer variable

D

none of the mentioned

Correct Answer: C

A semaphore S is an integer variable that, apart from initialization, is accessed only through two standard atomic operations: wait() and signal().

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