What does the term 'DDR4' indicate about a memory module? MCQ with Answer and Explanation

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What does the term 'DDR4' indicate about a memory module?

A. It is a type of ROM

B. It stands for Digital Data Register 4

C. It is the fourth generation of Double Data Rate memory

D. It has four data rate channels

Answer: Option C

Solution (By JKSSB Mock Tests)

DDR4 is the fourth generation of Double Data Rate (DDR) SDRAM, offering higher speeds, lower voltage, and increased density compared to DDR3.

This question belongs to: Computer Memory and Storage Devices

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Question #1

Which of the following is not a type of RAM?

A. DDR3

B. Flash

C. SDRAM

D. RDRAM

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Correct Answer: Option B

Explanation:
Flash memory is non-volatile storage, not a type of RAM. DDR3, SDRAM, and RDRAM are all types of RAM.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which of the following is a type of memory that is used for storing data in a mobile phone?

A. eMMC

B. SRAM

C. DRAM

D. All of the above

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Correct Answer: Option D

Explanation:
Mobile phones use eMMC or UFS for storage, DRAM for main memory, and SRAM for cache in the processor.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which type of memory uses capacitors to store data and needs periodic refreshing?

A. DRAM

B. Flash memory

C. SRAM

D. ROM

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Correct Answer: Option A

Explanation:
DRAM (Dynamic RAM) uses capacitors to store bits; they leak charge and must be refreshed periodically. SRAM uses flip-flops and does not need refreshing.

This question belongs to: Computer Memory and Storage Devices

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