Which architectural component generates the addresses required to fetch instructions from physical memory locations? MCQ with Answer and Explanation

Which architectural component generates the addresses required to fetch instructions from physical memory locations?
A. The Program Counter (PC)
B. The Optical Laser Assembly
C. The Hard Drive Actuator
D. The Data Bus
Answer: Option A
Solution (By JKSSB Mock Tests)
The Program Counter is a specialized processor register that holds the memory address of the next sequential instruction slated for execution.

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Practice More Memory and Storage Devices Questions

Question #1
Which of the following is a characteristic of dynamic RAM (DRAM)?
A. It uses flip-flops
B. It is non-volatile
C. It requires periodic refreshing
D. It is faster than SRAM

Correct Answer: Option C


Explanation:
DRAM stores data in capacitors, which lose charge over time; thus, it requires periodic refreshing (every few milliseconds) to retain data. SRAM is faster but more expensive.

This question belongs to: Computer Memory and Storage Devices
Question #2
What is the typical capacity of a DVD-RW disc?
A. 25 GB
B. 8.5 GB
C. 4.7 GB
D. 700 MB

Correct Answer: Option C


Explanation:
DVD-RW has a capacity of 4.7 GB (single-layer). Dual-layer rewritable discs exist but are less common.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a classic example of a sequential-access data media format?
A. Magnetic Tape
B. Floppy Disk
C. Blu-ray Disc
D. Solid State Drive

Correct Answer: Option A


Explanation:
Magnetic tape systems lack addressable coordinate sectors, forcing the drive mechanism to advance or rewind linearly through the tape roll to reach a specific block.

This question belongs to: Computer Memory and Storage Devices