What is the smallest logic allocation unit of data storage on a hard disk drive recognized by an operating system's file system? MCQ with Answer and Explanation

What is the smallest logic allocation unit of data storage on a hard disk drive recognized by an operating system's file system?
A. Platter
B. Track
C. Sector
D. Cluster
Answer: Option D
Solution (By JKSSB Mock Tests)
A cluster (or allocation unit) is a group of sectors combined by the operating system's file system to form the smallest legal space where a file can be stored.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a typical latency value for DDR4 RAM?
A. CL9-CL11
B. CL14-CL16
C. CL30-CL36
D. CL18-CL22

Correct Answer: Option B


Explanation:
DDR4 common CAS latencies are around 14-16, though higher speeds may have CL18-22. DDR3 had CL9-11. DDR5 is higher (CL30+). So A is correct for typical DDR4.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a volatile memory type?
A. Magnetic disk
B. SRAM
C. Flash memory
D. ROM

Correct Answer: Option B


Explanation:
SRAM is volatile, meaning it loses data when power is removed. Flash, ROM, and magnetic disk are non-volatile.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical capacity of a DVD-R DL (dual layer) disc?
A. 17 GB
B. 8.5 GB
C. 9.4 GB
D. 4.7 GB

Correct Answer: Option B


Explanation:
DVD-R DL (dual layer) has a capacity of 8.5 GB. Double-sided dual layer would be larger.

This question belongs to: Computer Memory and Storage Devices