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 stands for Digital Data Register 4

B. It is a type of ROM

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 a common interface for optical drives?

A. All of the above

B. IDE

C. SCSI

D. SATA

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Correct Answer: Option A

Explanation:
Optical drives have been available with SATA, IDE, and SCSI interfaces, though SATA is the most common in modern systems.

This question belongs to: Computer Memory and Storage Devices

Question #2

Which of the following is a type of storage that is non-volatile and uses no moving parts?

A. CD-ROM

B. SSD

C. Hard disk

D. Magnetic tape

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Correct Answer: Option B

Explanation:
SSD (Solid State Drive) has no moving parts and uses flash memory, making it non-volatile and shock-resistant.

This question belongs to: Computer Memory and Storage Devices

Question #3

Which of the following is an example of secondary storage?

A. Cache

B. RAM

C. Registers

D. Hard disk

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Correct Answer: Option D

Explanation:
Secondary storage refers to non-volatile storage that is not directly accessible by the CPU, such as hard disks, SSDs, and optical discs. RAM and cache are primary storage; registers are internal to CPU.

This question belongs to: Computer Memory and Storage Devices

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