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Welcome to the Process Synchronization MCQs Page

Dive deep into the fascinating world of Process Synchronization with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Process Synchronization, a crucial aspect of Operating System. In this section, you will encounter a diverse range of MCQs that cover various aspects of Process Synchronization, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Operating System.

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Check out the MCQs below to embark on an enriching journey through Process Synchronization. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Operating System.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Process Synchronization. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Process Synchronization MCQs | Page 10 of 15

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Q91.
A terminated transaction that has completed its execution successfully is ____________ otherwise it is __________

a.

committed, destroyed

b.

aborted, destroyed

c.

committed, aborted

d.

none of the mentioned

Discuss
Answer: (c).committed, aborted
Q92.
The state of the data accessed by an aborted transaction must be restored to what it was just before the transaction started executing. This restoration is known as ________ of transaction.

a.

safety

b.

protection

c.

roll – back

d.

revert – back

Discuss
Answer: (c).roll – back
Q93.
Write ahead logging is a way :

a.

to ensure atomicity

b.

to keep data consistent

c.

that records data on stable storage

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q94.
In the write ahead logging a _____ is maintained.

a.

a memory

b.

a system

c.

a disk

d.

a log record

Discuss
Answer: (d).a log record
Q95.
An actual update is not allowed to a data item :

a.

before the corresponding log record is written out to stable storage

b.

after the corresponding log record is written out to stable storage

c.

until the whole log record has been checked for inconsistencies

d.

all of the mentioned

Discuss
Answer: (a).before the corresponding log record is written out to stable storage
Q96.
The undo and redo operations must be _________ to guarantee correct behaviour, even if a failure occurs during recovery process.

a.

idempotent

b.

easy

c.

protected

d.

all of the mentioned

Discuss
Answer: (a).idempotent
Q97.
The system periodically performs checkpoints that consists of the following operation(s) :

a.

Putting all the log records currently in main memory onto stable storage

b.

putting all modified data residing in main memory onto stable storage

c.

putting a log record onto stable storage

d.

all of the mentioned

Discuss
Answer: (d).all of the mentioned
Q98.
Consider a transaction T1 that committed prior to checkpoint. The <T1 commits> record appears in the log before the <checkpoint> record. Any modifications made by T1 must have been written to the stable storage either with the checkpoint or prior to it. Thus at recovery time:

a.

There is a need to perform an undo operation on T1

b.

There is a need to perform a redo operation on T1

c.

There is no need to perform an undo and redo operation on T1

d.

All of the mentioned

Discuss
Answer: (c).There is no need to perform an undo and redo operation on T1
Q99.
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

Discuss
Answer: (a).concurrent execution of transactions is equivalent to the transactions executed serially
Q100.
A locking protocol is one that :

a.

governs how locks are acquired

b.

governs how locks are released

c.

governs how locks are acquired and released

d.

none of the mentioned

Discuss
Answer: (c).governs how locks are acquired and released
Page 10 of 15

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