Which unit of storage represents exactly 1024 Zettabytes? MCQ with Answer and Explanation

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Which unit of storage represents exactly 1024 Zettabytes?

A. 1 Megabyte

B. 1 Exabyte

C. 1 Yottabyte

D. 1 Petabyte

Answer: Option C

Solution (By JKSSB Mock Tests)

The progression of large-scale data storage units dictates that 1024 Zettabytes (ZB) equals precisely 1 Yottabyte (YB).

This question belongs to: Computer Memory and Storage Devices

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Question #1

What is the typical data transfer rate of a USB 3.1 Gen 1 (same as USB 3.0) port?

A. 20 Gbps

B. 10 Gbps

C. 480 Mbps

D. 5 Gbps

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Correct Answer: Option D

Explanation:
USB 3.1 Gen 1 is the same as USB 3.0 and has a max rate of 5 Gbps. USB 3.1 Gen 2 is 10 Gbps, USB 3.2 Gen 2x2 is 20 Gbps.

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the function of a memory decoder?

A. To control the memory bus

B. To manage cache replacement

C. To select a specific memory location based on an address

D. To encode data into memory

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Correct Answer: Option C

Explanation:
A memory decoder takes the memory address and activates the appropriate row and column lines to access the correct memory cell.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the typical write speed of a DVD-R disc?

A. 1.32 MB/s (1x)

B. 36 MB/s (1x)

C. 4.5 MB/s (1x)

D. 11.08 MB/s (1x)

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Correct Answer: Option A

Explanation:
1x DVD data rate is 11.08 Mbit/s = 1.32 MB/s. So write speed at 1x is 1.32 MB/s. Higher multipliers increase speed.

This question belongs to: Computer Memory and Storage Devices

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