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📚 Part of: Colonialism And Indian Independence Mcq Quiz

One KB is equal to?

Category: Miscellaneous Indian Gk

Correct Answer: A) 1024 bytes.

Exam Relevance: UPSC, SSC, Banking Exams, Railways Exams

Difficulty: Easy

Concept notes:

In computing, a kilobyte (KB) is a unit of digital information that equals 1024 bytes. This is based on the binary system used in computing, where each unit is a power of 2. Understanding the difference between binary and decimal systems is crucial for comprehending data storage units.

Common Mistakes:
  • Confusing kilobyte (KB) with kilogram (kg).
  • Assuming that kilobyte follows the decimal system (1000 bytes).
  • Misunderstanding the difference between binary and decimal systems in computing.
Explanation:

In computing, data storage units are based on the binary system, which is a base-2 system. This system is used because computers operate using binary digits (bits), which can be either 0 or 1. The binary system is essential for understanding how data is stored and processed in computers.

The basic unit of data storage is the byte, which consists of 8 bits. Larger units of data storage are derived from the byte using powers of 2. The most common units are:

- Kilobyte (KB): 1024 bytes (2^10)

- Megabyte (MB): 1024 kilobytes (2^20)

- Gigabyte (GB): 1024 megabytes (2^30)

- Terabyte (TB): 1024 gigabytes (2^40)

The confusion often arises because in everyday usage, the prefix "kilo" typically means 1000 (in the decimal system). However, in computing, "kilo" is defined as 1024 due to the binary system. This distinction is crucial for understanding data storage and memory in computers.

To summarize, a kilobyte (KB) is equal to 1024 bytes, not 1000 bytes. This is because the binary system, which is the foundation of computing, uses powers of 2 to define data storage units. Understanding this concept is essential for anyone working with or studying computer systems and data storage.

Option Analysis:
  • Option A: This option is correct. In computing, a kilobyte (KB) is defined as 1024 bytes. This is based on the binary system used in computing, where each unit is a power of 2. Specifically, 1024 is 2^10, which aligns with the binary system's base-2 structure.
  • Option B: This option is incorrect. While 1000 is a common approximation in everyday usage, it is not the precise definition in computing. The confusion arises from the decimal system, where kilo typically means 1000. However, in the context of computer memory and data storage, the binary system is used, making 1024 the correct value for a kilobyte.
  • Option C: This option is incorrect. A kilobyte (KB) is a much smaller unit of data storage compared to a megabyte (MB). Specifically, 1 MB equals 1024 KB. Therefore, 1024 MB is a much larger quantity, equivalent to 1 gigabyte (GB).
  • Option D: This option is incorrect. A gigabyte (GB) is a much larger unit of data storage than a kilobyte (KB). Specifically, 1 GB equals 1024 MB, and 1 MB equals 1024 KB. Therefore, 1000 GB is an extremely large quantity, far exceeding the size of a kilobyte.

Mnemonic: Kilo in KB stands for 1024 in computing, not 1000.

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