What size of storage data block is represented exactly by the term 'Kilobyte' (KB) in pure binary-scale computation systems? MCQ with Answer and Explanation

What size of storage data block is represented exactly by the term 'Kilobyte' (KB) in pure binary-scale computation systems?
A. 2048 Bytes
B. 1024 Bytes
C. 512 Bytes
D. 1000 Bytes
Answer: Option B
Solution (By JKSSB Mock Tests)
In binary computer notation, a Kilobyte is calculated as $2^{10}$ bytes, which equals exactly 1024 bytes.

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Question #1
Which memory metric describes the time interval between a memory controller issuing a command and the data becoming available on the output pins?
A. CAS Latency
B. Bandwidth
C. Refresh rate
D. Clock Rate

Correct Answer: Option A


Explanation:
CAS (Column Address Strobe) Latency indicates the delay cycle count between an internal data request command and when the first bit of data is delivered.

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Question #2
What is the capacity of a standard mini CD?
A. 1.4 GB
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Correct Answer: Option D


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Question #3
Which of the following is a type of memory that uses a laser to read data?
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Correct Answer: Option B


Explanation:
CD-ROM and other optical discs use a laser to read data by detecting reflected light from pits and lands.

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