What is the role of a memory management unit (MMU)? MCQ with Answer and Explanation

What is the role of a memory management unit (MMU)?
A. To increase the memory capacity
B. To handle disk I/O
C. To manage cache memory
D. To translate virtual addresses to physical addresses
Answer: Option D
Solution (By JKSSB Mock Tests)
The MMU is a hardware component that translates virtual memory addresses used by the CPU into physical addresses in RAM, enabling virtual memory and protection.

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Practice More Memory and Storage Devices Questions

Question #1
What is the typical capacity of a Blu-ray disc for 4K movies?
A. 128 GB
B. 100 GB (triple layer)
C. 50 GB (dual layer)
D. 25 GB

Correct Answer: Option B


Explanation:
Ultra HD Blu-ray discs for 4K movies often use triple-layer discs of 100 GB capacity, though dual-layer 50 GB is also used.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a common file system used on flash drives?
A. All of the above
B. FAT32
C. exFAT
D. NTFS

Correct Answer: Option A


Explanation:
Flash drives can be formatted with various file systems including FAT32, exFAT, and NTFS, depending on compatibility and file size requirements.

This question belongs to: Computer Memory and Storage Devices
Question #3
What is the typical capacity of a standard DVD+R disc?
A. 25 GB
B. 8.5 GB
C. 700 MB
D. 4.7 GB

Correct Answer: Option D


Explanation:
DVD+R (single-layer) holds 4.7 GB, same as DVD-R.

This question belongs to: Computer Memory and Storage Devices