What is the typical storage capacity of a standard DVD? MCQ with Answer and Explanation

What is the typical storage capacity of a standard DVD?
A. 700 MB
B. 25 GB
C. 4.7 GB
D. 128 GB
Answer: Option C
Solution (By JKSSB Mock Tests)
A standard single-layer DVD holds about 4.7 GB (or 4.38 GiB) of data. A CD holds ~700 MB, Blu-ray single layer ~25 GB, and pen drives vary.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a type of memory that is used for storing data and programs that are currently in use?
A. Primary storage
B. Tertiary storage
C. Offline storage
D. Secondary storage

Correct Answer: Option A


Explanation:
Primary storage (RAM) holds data and programs currently being used by the CPU. Secondary storage is for long-term storage.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the storage capacity of a standard single-layer Blu-ray Disc?
A. 8.5 GB
B. 25 GB
C. 50 GB
D. 4.7 GB

Correct Answer: Option B


Explanation:
A standard single-layer Blu-ray disc can hold up to 25 GB of data, whereas dual-layer versions can store up to 50 GB.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which specific optical storage standard uses a shorter wavelength blue-violet laser to read and write data, allowing for significantly higher data density?
A. DVD-R
B. Magnetic Tape
C. CD-ROM
D. Blu-ray Disc

Correct Answer: Option D


Explanation:
Blu-ray discs use a 405nm blue-violet laser, which has a shorter wavelength than the red lasers used in DVDs and CDs, allowing it to focus on smaller pits and pack more data.

This question belongs to: Computer Memory and Storage Devices