Which of the following is a type of memory that uses magnetic domains to store data? MCQ with Answer and Explanation

Question
Which of the following is a type of memory that uses magnetic domains to store data?
A. Hard disk
B. DRAM
C. Flash memory
D. CD-ROM
Answer: Option A
Solution (By JKSSB Mock Tests)
Hard disks store data magnetically on platters. Flash uses charge traps, optical uses pits, DRAM uses capacitors.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
What does the abbreviation 'NVMe' signify in modern high-speed solid state drive engineering architectures?
A. Network Volume Media Extension
B. New Vector Memory Encryption
C. Node Vector Management Engine
D. Non-Volatile Memory Express
Discuss
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Correct Answer: Option D

Explanation:
NVMe stands for Non-Volatile Memory Express. It is a communication protocol developed specifically for accessing high-speed storage media, like SSDs, via PCIe lanes.
This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a characteristic of a magnetic disk?
A. Data is stored in flash cells
B. Data is stored magnetically on a circular platter
C. Data is stored using laser
D. Data is stored in pits
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Correct Answer: Option B

Explanation:
Hard disk drives store data magnetically on rotating platters. Optical discs use pits, and SSDs use flash cells.
This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical data transfer rate of a USB 3.1 Gen 1 (same as USB 3.0) port?
A. 10 Gbps
B. 480 Mbps
C. 5 Gbps
D. 20 Gbps
Discuss
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Correct Answer: Option C

Explanation:
USB 3.1 Gen 1 is the same as USB 3.0 and has a max rate of 5 Gbps. USB 3.1 Gen 2 is 10 Gbps, USB 3.2 Gen 2x2 is 20 Gbps.
This question belongs to: Computer Memory and Storage Devices
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