IT 337
Data Storage
Comprehensive Finals Test (Qns & Ans)
2025
1. Which of the following storage types uses magnetic disks to
store and retrieve data?
- A. Solid-state drive (SSD)
- B. Hard disk drive (HDD)
- C. Optical disk
- D. Flash memory
ANS: B. Hard disk drive (HDD)
©/2025
, Rationale: HDDs use magnetic disks to store and retrieve
data, offering large storage capacities at a relatively low cost.
2. What is the primary purpose of a RAID 5 array in data
storage?
- A. To provide data compression
- B. To increase read and write speeds
- C. To ensure data redundancy and fault tolerance
- D. To encrypt stored data
ANS: C. To ensure data redundancy and fault tolerance
Rationale: RAID 5 arrays provide data redundancy and fault
tolerance by distributing parity information across multiple drives,
allowing data recovery in case of a drive failure.
Fill-in-the-Blank Questions
3. The process of writing data to two or more disks
simultaneously for fault tolerance is known as __________.
ANS: mirroring
Rationale: Mirroring involves writing data to two or more
disks simultaneously to ensure fault tolerance and data
redundancy.
©/2025
,4. __________ memory is a type of non-volatile storage that can
be electrically erased and reprogrammed.
ANS: Flash
Rationale: Flash memory is a type of non-volatile storage that
retains data without power and can be electrically erased and
reprogrammed.
True/False Questions
5. True or False: In a RAID 1 configuration, data is striped
across multiple disks to improve performance.
ANS: False
Rationale: RAID 1, also known as mirroring, involves
duplicating data on two or more disks for redundancy, not striping
data across multiple disks.
6. True or False: SAN (Storage Area Network) provides block-
level storage access over a dedicated network.
ANS: True
©/2025
, Rationale: SAN provides block-level storage access over a
dedicated network, allowing multiple servers to access shared
storage resources.
Multiple Response Questions
7. Which of the following are advantages of using SSDs over
HDDs? (Select all that apply)
- A. Faster data access times
- B. Lower power consumption
- C. Greater durability
- D. Higher storage capacity
ANSs: A, B, C
Rationale: SSDs offer faster data access times, lower power
consumption, and greater durability compared to HDDs.
However, HDDs typically offer higher storage capacities at a
lower cost.
8. Which of the following are common use cases for network-
attached storage (NAS)? (Select all that apply)
- A. Centralized file storage
- B. Database hosting
- C. Media streaming
©/2025
Data Storage
Comprehensive Finals Test (Qns & Ans)
2025
1. Which of the following storage types uses magnetic disks to
store and retrieve data?
- A. Solid-state drive (SSD)
- B. Hard disk drive (HDD)
- C. Optical disk
- D. Flash memory
ANS: B. Hard disk drive (HDD)
©/2025
, Rationale: HDDs use magnetic disks to store and retrieve
data, offering large storage capacities at a relatively low cost.
2. What is the primary purpose of a RAID 5 array in data
storage?
- A. To provide data compression
- B. To increase read and write speeds
- C. To ensure data redundancy and fault tolerance
- D. To encrypt stored data
ANS: C. To ensure data redundancy and fault tolerance
Rationale: RAID 5 arrays provide data redundancy and fault
tolerance by distributing parity information across multiple drives,
allowing data recovery in case of a drive failure.
Fill-in-the-Blank Questions
3. The process of writing data to two or more disks
simultaneously for fault tolerance is known as __________.
ANS: mirroring
Rationale: Mirroring involves writing data to two or more
disks simultaneously to ensure fault tolerance and data
redundancy.
©/2025
,4. __________ memory is a type of non-volatile storage that can
be electrically erased and reprogrammed.
ANS: Flash
Rationale: Flash memory is a type of non-volatile storage that
retains data without power and can be electrically erased and
reprogrammed.
True/False Questions
5. True or False: In a RAID 1 configuration, data is striped
across multiple disks to improve performance.
ANS: False
Rationale: RAID 1, also known as mirroring, involves
duplicating data on two or more disks for redundancy, not striping
data across multiple disks.
6. True or False: SAN (Storage Area Network) provides block-
level storage access over a dedicated network.
ANS: True
©/2025
, Rationale: SAN provides block-level storage access over a
dedicated network, allowing multiple servers to access shared
storage resources.
Multiple Response Questions
7. Which of the following are advantages of using SSDs over
HDDs? (Select all that apply)
- A. Faster data access times
- B. Lower power consumption
- C. Greater durability
- D. Higher storage capacity
ANSs: A, B, C
Rationale: SSDs offer faster data access times, lower power
consumption, and greater durability compared to HDDs.
However, HDDs typically offer higher storage capacities at a
lower cost.
8. Which of the following are common use cases for network-
attached storage (NAS)? (Select all that apply)
- A. Centralized file storage
- B. Database hosting
- C. Media streaming
©/2025
