How many bits are contained within a data block size of exactly 4 Bytes? MCQ with Answer and Explanation

How many bits are contained within a data block size of exactly 4 Bytes?
A. 64 bits
B. 16 bits
C. 128 bits
D. 32 bits
Answer: Option D
Solution (By JKSSB Mock Tests)
Since one byte is strictly defined as 8 bits, a 4-byte block contains exactly $4 imes 8 = 32$ bits.

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Practice More Memory and Storage Devices Questions

Question #1
What is the primary advantage of an SSD over a traditional hard disk?
A. Lower cost per GB
B. No moving parts, faster access
C. Longer lifespan
D. Higher capacity

Correct Answer: Option B


Explanation:
SSDs have no moving parts and use flash memory, providing much faster read/write speeds and lower latency compared to HDDs, which rely on spinning platters and mechanical heads.

This question belongs to: Computer Memory and Storage Devices
Question #2
Which of the following is a type of memory that is used for archival storage due to its low cost per GB?
A. Magnetic tape
B. Hard disk
C. SSD
D. Blu-ray

Correct Answer: Option A


Explanation:
Magnetic tape offers the lowest cost per gigabyte among these, making it ideal for archival and backup. HDDs are also used but tape is cheaper for large volumes.

This question belongs to: Computer Memory and Storage Devices
Question #3
Which of the following is a characteristic of a hard disk's track?
A. The distance between platters
B. A vertical stack of platters
C. A circular path on a platter where data is stored
D. A sector on the disk

Correct Answer: Option C


Explanation:
A track is one of many concentric circular paths on a platter surface. Data is written on these tracks.

This question belongs to: Computer Memory and Storage Devices