Which unit of storage represents exactly $2^{40}$ bytes of data? MCQ with Answer and Explanation

Question

Share Report Error

Which unit of storage represents exactly $2^{40}$ bytes of data?

A. 1 Petabyte

B. 1 Gigabyte

C. 1 Megabyte

D. 1 Terabyte

Answer: Option D

Solution (By JKSSB Mock Tests)

$2^{10}$ is Kilobyte, $2^{20}$ is Megabyte, $2^{30}$ is Gigabyte, and $2^{40}$ is Terabyte. Thus, $2^{40}$ bytes equals 1 Terabyte (TB).

This question belongs to: Computer Memory and Storage Devices

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Memory and Storage Devices Questions

Question #1

Which of the following is a type of memory that is used for storage of data in a digital camera?

A. ROM

B. RAM

C. Hard disk

D. SD card

View Answer & Solution Discuss

Get Complete Subject PDF for Computer

Correct Answer: Option D

Explanation:
Digital cameras use removable flash memory cards like SD cards for storing photos and videos.

This question belongs to: Computer Memory and Storage Devices

Question #2

What is the maximum theoretical data rate of USB 3.0?

A. 10 Gbps

B. 5 Gbps

C. 480 Mbps

D. 20 Gbps

View Answer & Solution Discuss

Get Complete Subject PDF for Computer

Correct Answer: Option B

Explanation:
USB 3.0 (SuperSpeed) has a maximum theoretical data rate of 5 Gbps. USB 2.0 is 480 Mbps, USB 3.1 is 10 Gbps, and USB 3.2 can be 20 Gbps.

This question belongs to: Computer Memory and Storage Devices

Question #3

What is the primary storage technology used in SSDs?

A. NAND flash memory

B. DRAM cells

C. Magnetic disks

D. Optical disks

View Answer & Solution Discuss

Get Complete Subject PDF for Computer

Correct Answer: Option A

Explanation:
SSDs use NAND flash memory, which is non-volatile and based on floating-gate transistors. HDDs use magnetic disks, and optical discs use lasers.

This question belongs to: Computer Memory and Storage Devices

Explore All Memory and Storage Devices MCQs