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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 6 of 10

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Q51.
Before a block of data in main memory can be output to the database, all log records pertaining to data in that block must have been output to stable storage. This is

a.

Read-write logging

b.

Read-ahead logging

c.

Write-ahead logging

d.

None of the mentioned

Discuss
Answer: (c).Write-ahead logging
Q52.
Writing the buffered log to __________ is sometimes referred to as a log force.

a.

Memory

b.

Backup

c.

Redo memory

d.

Disk

Discuss
Answer: (d).Disk
Q53.
The _______________ policy, allows a transaction to commit even if it has modified some blocks that have not yet been written back to disk.

a.

Force

b.

No-force

c.

Steal

d.

No-steal

Discuss
Answer: (b).No-force
Q54.
______________ policy allows multiple updates to accumulate on a block before it is output to stable storage, which can reduce the number of output operations greatly for frequently updated blocks.

a.

Force

b.

No-force

c.

Steal

d.

No-steal

Discuss
Answer: (b).No-force
Q55.
The ___________ policy, allows the system to write modified blocks to disk even if the transactions thatmade those modifications have not all committed.

a.

Force

b.

No-force

c.

Steal

d.

No-steal

Discuss
Answer: (c).Steal
Q56.
Locks on buffer blocks are unrelated to locks used for concurrency-control of transactions, and releasing them in a non-two-phase manner does not have any implications on transaction serializability. This is

a.

Latches

b.

Swap Space

c.

Dirty Block

d.

None of the mentioned

Discuss
Answer: (a).Latches
Q57.
The __________________ contains a list of blocks that have been updated in the database buffer.

a.

Latches

b.

Swap Space

c.

Dirty Block

d.

None of the mentioned

Discuss
Answer: (c).Dirty Block
Q58.
The operating system reserves space on disk for storing virtual-memory pages that are not currently in main memory; this space is called

a.

Latches

b.

Swap Space

c.

Dirty Block

d.

None of the mentioned

Discuss
Answer: (b).Swap Space
Q59.
What was the name of the first commercially available microprocessor chip?

a.

Intel 308

b.

Intel 33

c.

Intel 4004

d.

Motorola 639

Discuss
Answer: (c).Intel 4004
Q60.
The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as

a.

Magnetic core memory

b.

Magnetic tape memory

c.

Magnetic disk memory

d.

Magnetic bubble memory

Discuss
Answer: (d).Magnetic bubble memory
Page 6 of 10

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