CompTIA A+ Exam 220-1101 - Storage Devices [RAIDs] Quiz

Question 1

Which RAID levels does not offer fault tolerance?

Answer 1

RAID 0

Question 2

Hardware RAID Level 0:

Answer 2

Is also known as disk striping

Decreases reliability (failure of any disk in the array destroys the entire array)

Is suitable for systems where performance has higher priority than fault tolerance

Question 3

Hardware RAID Level 1:

Answer 3

Requires at least 2 drives to implement

Is also referred to as disk mirroring

Offers improved reliability by creating identical data sets on each drive

Question 4

Hardware RAID Level 5:

Answer 4

Requires at least 3 drives to implement

Offers increased performance and fault tolerance

Offers parity = ensures that the data stored in the disks will transfer correctly and helps reconstruct missing data based on the information from other disks.

Question 5

Which refer(s) to (a) nested RAID level(s)?

Answer 5

RAID 1+0

RAID 10

Question 6

Hardware RAID Level 10 requires a minimum of:

Answer 6

4 drives

Question 7

Which type of RAID creates a striped set from a series of mirrored drives?

Answer 7

RAID 1+0