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Cyclic Redundancy Check

In this article, we will discuss CRC (cyclic redundancy check).

What Is Cyclic Redundancy Check?

Whenever data is transferred over the network, it is transferred as chunks.

Picture showing the representation of data as chunks

It is important to maintain data integrity during the data transfer. Cyclic redundancy is a technique that fulfills this purpose. During data transfer, these steps are followed

Data is encoded by appending a fixed-length binary sequence (called a check value)
Data encoded with check value (now called codeword) is transferred over the network
Once data is received, the check value is calculated again. If the check value is the same at both places, then it means the data has not been tampered

Posted By -	Karan Gupta

Posted On -	Wednesday, March 1, 2017

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