What is the typical capacity of a DVD-RW disc? MCQ with Answer and Explanation

What is the typical capacity of a DVD-RW disc?
A. 700 MB
B. 25 GB
C. 4.7 GB
D. 8.5 GB
Answer: Option C
Solution (By JKSSB Mock Tests)
DVD-RW has a capacity of 4.7 GB (single-layer). Dual-layer rewritable discs exist but are less common.

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Practice More Memory and Storage Devices Questions

Question #1
What is the role of a memory controller in a system with multiple memory channels?
A. All of the above
B. To distribute memory accesses across channels for increased bandwidth
C. To combine memory modules into one larger pool
D. To select which channel to use for each access

Correct Answer: Option A


Explanation:
A memory controller with multiple channels can distribute traffic to increase bandwidth, combine capacities, and select channels based on addressing.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the role of a cache controller?
A. To handle disk scheduling
B. To translate virtual addresses
C. To allocate memory for processes
D. To manage cache memory, including hit/miss detection and data replacement

Correct Answer: Option D


Explanation:
The cache controller handles the logic for cache operations, determining whether requested data is in cache (hit) and managing replacement policies when cache is full.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a type of memory that is non-volatile and used for firmware?
A. DRAM
B. SRAM
C. RAM
D. Flash ROM

Correct Answer: Option D


Explanation:
Flash ROM is non-volatile and often used for storing firmware (BIOS) because it can be updated electrically.

This question belongs to: Computer Memory and Storage Devices