What is the role of a memory controller in a system with multiple memory channels? MCQ with Answer and Explanation

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What is the role of a memory controller in a system with multiple memory channels?

A. To select which channel to use for each access

B. To combine memory modules into one larger pool

C. To distribute memory accesses across channels for increased bandwidth

D. All of the above

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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Practice More Memory and Storage Devices Questions

Question #1

Which of the following is used to measure the data transfer rate of a memory bus?

A. Both A and B

B. Bytes per second

C. Bits per second

D. Hertz

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Correct Answer: Option A

Explanation:
Data transfer rate can be expressed in bytes per second (e.g., MB/s) or bits per second (e.g., Mbps), and the bus clock is in Hz. But the rate is typically Bps or bps.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which of the following is a type of memory that can be written to and read from, but loses data when power is off?

A. ROM

B. RAM

C. EEPROM

D. Flash memory

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Correct Answer: Option B

Explanation:
RAM is volatile; it can be read and written, but contents are lost when power is turned off. EEPROM, flash, and ROM are non-volatile.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which problem occurs when software applications continuously allocate memory space in RAM but fail to release it back to the operating system after finishing their tasks?

A. Buffer Overflow

B. Cache Truncation

C. Disk Defragmentation

D. Memory Leak

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Correct Answer: Option D

Explanation:
A memory leak happens when a program allocates memory space from the system heap but fails to free it up after use, reducing available RAM until the system slows down or crashes.

This question belongs to: Computer Memory and Storage Devices

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