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Welcome to the Recovery System MCQs Page

Dive deep into the fascinating world of Recovery System with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Recovery System, a crucial aspect of DBMS. In this section, you will encounter a diverse range of MCQs that cover various aspects of Recovery System, 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 DBMS.

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

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

Recovery System MCQs | Page 9 of 10

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Q81.
The simplest way of transferring control is for the old primary to receive __________ from the old backup site.

a.

Undo logs

b.

Redo Logs

c.

Primary Logs

d.

All of the mentioned

Discuss
Answer: (c).Primary Logs
Q82.
The time to process the remote backup can be reduced by

a.

Flags

b.

Breakpoints

c.

Redo points

d.

Checkpoints

Discuss
Answer: (d).Checkpoints
Q83.
A _______________ configuration can make takeover by the backup site almost instantaneous.

a.

Hot-spare

b.

Remote

c.

Direct

d.

Spare

Discuss
Answer: (d).Spare
Q84.
A transaction commits as soon as its commit log record is written to stable storage at the primary site. This is

a.

One Safe

b.

Two Safe

c.

Two-very Safe

d.

Very Safe

Discuss
Answer: (a).One Safe
Q85.
A transaction commits as soon as its commit log record is written to stable storage at the primary and the backup site.This is

a.

One Safe

b.

Two Safe

c.

Two-very Safe

d.

Very Safe

Discuss
Answer: (c).Two-very Safe
Q86.
If only the primary is active, the transaction is allowed to commit as soon as its commit log record is written to stable storage at the primary site. This is

a.

One Safe

b.

Two Safe

c.

Two-very Safe

d.

Very Safe

Discuss
Answer: (b).Two Safe
Q87.
Once the lower-level lock is released, the operation cannot be undone by using the old values of updated data items, and must instead be undone by executing a compensating operation; such an operation is called

a.

Logical operation

b.

Redo operation

c.

Logical undo operation

d.

Undo operation

Discuss
Answer: (a).Logical operation
Q88.
Which of the following is used for undo operations alone ?

a.

Logical logging

b.

Physical logging

c.

Physical log records

d.

Physical logging and Physical log records

Discuss
Answer: (a).Logical logging
Q89.
Redo operations are performed exclusively using

a.

Logical logging

b.

Physical logging

c.

Physical log records

d.

Both Physical logging and Physical log records

Discuss
Answer: (d).Both Physical logging and Physical log records
Q90.
To perform logical redo or undo, the database state on disk must be operation ___________ that is, it should not have partial effects of any operation.

a.

Persistent

b.

Resistant

c.

Consistent

d.

None of the mentioned

Discuss
Answer: (c).Consistent
Page 9 of 10

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