Which of the following is a type of optical disc that is recordable once? MCQ with Answer and Explanation

Question
Which of the following is a type of optical disc that is recordable once?
A. CD-R
B. DVD-RAM
C. CD-ROM
D. CD-RW
Answer: Option A
Solution (By JKSSB Mock Tests)
CD-R (Recordable) can be written once and read many times. CD-RW is rewritable, and CD-ROM is read-only. DVD-RAM is a rewritable optical disc.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
What is the function of a memory scheduler?
A. To manage cache lines
B. To control page faults
C. To allocate memory to processes
D. To reorder memory requests to maximize performance
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Correct Answer: Option D

Explanation:
A memory scheduler in a memory controller reorders incoming read/write requests to optimize bandwidth and reduce latency, improving overall performance.
This question belongs to: Computer Memory and Storage Devices
Question #2
What does the acronym SSD stand for?
A. Solid System Disk
B. Synchronous Storage Device
C. Serial Storage Drive
D. Solid State Drive
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Correct Answer: Option D

Explanation:
SSD stands for Solid State Drive, a storage device using integrated circuit assemblies as memory to store data persistently.
This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical speed of a 5400 RPM hard disk in terms of average latency?
A. 8.33 ms
B. 11.11 ms
C. 5.56 ms
D. 4.17 ms
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Correct Answer: Option C

Explanation:
At 5400 RPM, one rotation takes 60/5400 = 0.01111 seconds = 11.11 ms. Average rotational latency is half of that, about 5.56 ms.
This question belongs to: Computer Memory and Storage Devices
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