Operating System (3140702) MCQs

MCQs of I/O Management & Disk scheduling

Showing 21 to 30 out of 40 Questions
1 2 3 4
21.
For most computers, the bootstrap is stored in ________
(a) RAM
(b) ROM
(c) Cache
(d) Tertiary storage
Answer:

Option (b)

22.
A disk that has a boot partition is called a _________
(a) start disk
(b) end disk
(c) boot disk
(d) All of the mentioned
Answer:

Option (c)

23.
Defective sectors on disks are often known as __________
(a) good blocks
(b) bad blocks
(c) destroyed blocks
(d) damaged blocks
Answer:

Option (b)

24.
DMA stands for ___________
(a) Dual Memory Access
(b) Direct Memory Access
(c) Digital Memory Access
(d) None of the mentioned
Answer:

Option (b)

25.
Modes of bus operation is/are ______
(a) word-at-a-time mode
(b) block mode
(c) Both A and B
(d) None of the mentioned
Answer:

Option (c)

26.
RAID stands for _________
(a) Redundant Array of Independent Disks
(b) Removed Array of Independent Disks
(c) Redundant Array of Individual Disks
(d) Redundant Array of Independent Data
Answer:

Option (a)

27.
In RAID level 4, one block read, accesses __________
(a) all disks simultaneously
(b) all disks sequentially
(c) only one disk
(d) None of the mentioned
Answer:

Option (c)

28.
If a disk fails in RAID level ___________ rebuilding lost data is easiest.
(a) 1
(b) 2
(c) 3
(d) 4
Answer:

Option (a)

29.
The technique of duplicating every disk is known as :
(a) Shadowing
(b) Mirroring
(c) Redundancy
(d) All of the mentioned
Answer:

Option (b)

30.
RAID level _______ refers to disk mirroring.
(a) 0
(b) 1
(c) 2
(d) 3
Answer:

Option (b)

Showing 21 to 30 out of 40 Questions
1 2 3 4