What is the purpose of a memory shadow? MCQ with Answer and Explanation

Question
What is the purpose of a memory shadow?
A. To copy ROM contents to RAM for faster access
B. To create a backup of memory
C. To reduce memory usage
D. To encrypt memory contents
Answer: Option A
Solution (By JKSSB Mock Tests)
Memory shadowing copies BIOS or other ROM contents to faster RAM to improve access speed, since RAM is faster than ROM.
This question belongs to: Computer Memory and Storage Devices
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Practice More Memory and Storage Devices Questions

Question #1
In computer data organization, what does a single 'Word' represent?
A. A fixed group of 8 bits.
B. The standard space needed to save a string character.
C. The natural unit of data used by a particular CPU design (e.g., 32-bit or 64-bit).
D. A text element containing no numerical integers.
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Correct Answer: Option C

Explanation:
A computer word is the standard size of data that a processor can handle and execute in a single operation, typically 32 or 64 bits modernly.
This question belongs to: Computer Memory and Storage Devices
Question #2
What is the typical storage capacity of a CD-R?
A. 4.7 GB
B. 700 MB
C. 650 MB
D. 25 GB
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Correct Answer: Option B

Explanation:
A standard CD-R can hold 700 MB of data (or 80 minutes of audio), though some older ones may be 650 MB. DVD-R holds 4.7 GB, and Blu-ray 25 GB.
This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following units is the largest in terms of data storage capacity?
A. Exabyte (EB)
B. Terabyte (TB)
C. Petabyte (PB)
D. Yottabyte (YB)
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Correct Answer: Option D

Explanation:
Among the options, Yottabyte (YB) is the largest. The order is Terabyte < Petabyte < Exabyte < Yottabyte.
This question belongs to: Computer Memory and Storage Devices
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