DEA-1TT5 RAID and Data Protection

Question 1

What does RAID stand for?

Accepted Answer

Redundant Array of Independent Disks

Answer

RAID (Redundant Array of Independent Disks) combines multiple physical disks into a logical unit to improve performance, fault tolerance, or both.

Question 2

Which RAID level provides striping without redundancy, offering maximum performance but no fault tolerance?

Accepted Answer

RAID 0

Answer

RAID 0 stripes data across multiple disks for improved performance but provides no redundancy — a single disk failure results in complete data loss.

Question 3

How many disk failures can RAID 6 tolerate?

Accepted Answer

2

Answer

RAID 6 uses dual distributed parity, allowing the array to survive the simultaneous failure of any two drives without data loss.

Question 4

What is a 'hot spare' in a RAID configuration?

Accepted Answer

An idle standby disk that automatically replaces a failed disk in an array

Answer

A hot spare is an unused drive that remains online in the array and automatically begins rebuilding when a drive in a RAID set fails, reducing time in a degraded state.

Question 5

In RAID 5, how is parity information stored?

Accepted Answer

Distributed across all disks in the array

Answer

RAID 5 distributes parity information evenly across all member disks, eliminating the single-parity-disk bottleneck and allowing any one disk to fail without data loss.

DEA-1TT5 - Information Storage and Management Exam Practice Test

DEA-1TT5 - Information Storage and Management Exam Practice Test

DEA-1TT5 RAID and Data Protection