What is the purpose of a memory test during POST? MCQ with Answer and Explanation

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What is the purpose of a memory test during POST?

A. To measure memory speed

B. To optimize memory settings

C. To verify that RAM is functioning correctly

D. To clear memory contents

Answer: Option C

Solution (By JKSSB Mock Tests)

During Power-On Self-Test (POST), the system checks the RAM to ensure it is functional and can be used by the system.

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the role of a memory controller hub (MCH)?

A. To connect the CPU to I/O devices

B. To control the hard disk

C. To manage power delivery

D. To connect the CPU to graphics and memory

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Correct Answer: Option D

Explanation:
The Memory Controller Hub (Northbridge) traditionally connects the CPU to memory and high-speed graphics. In modern CPUs, the memory controller is integrated.

This question belongs to: Computer Memory and Storage Devices

Question #2

What technology is used in pen drives (USB flash drives) to retain data without a power source?

A. Optical Storage

B. Magnetic Storage

C. Flash Memory (EEPROM)

D. Static RAM

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Correct Answer: Option C

Explanation:
Pen drives use NAND flash memory, which is a type of electrically erasable programmable read-only memory (EEPROM) that functions without moving parts.

This question belongs to: Computer Memory and Storage Devices

Question #3

What characteristic of a computer system is optimized when a designer adds more channels to the main system memory bus layout?

A. The permanent storage durability of the ROM firmware.

B. The system memory bandwidth and data throughput rates.

C. The resolution of the external monitor display.

D. The maximum capacity of the secondary storage drives.

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Correct Answer: Option B

Explanation:
Adding more memory channels increases the width of the data bus between the CPU and RAM, allowing more data bits to transfer simultaneously and boosting system memory bandwidth.

This question belongs to: Computer Memory and Storage Devices

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