Question
Download Solution PDFError detection and correction is done
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDF- Networks must be able to transfer data from one device to another with complete accuracy.
- An error occurs when a it is altered between transmission and reception (1 is transmitted and 0 is received, and vice versa)
- For reliable communication, errors must be detected and corrected.
- Error detection means deciding whether the received data is correct or not without having a copy of the original message.
- Error detection and correction uses the concept of redundancy, which means adding extra bits for detecting errors at the destination.
- These redundant bits are added by the sender and removed by the receiver.
- VRC (Vertical Redundancy Check): It is an error-detecting code commonly used in digital networks and storage devices to detect an error in data sent by the sender.
- LRC (Longitudinal Redundancy Check): It is an error-checking method used on an eight-bit ASCII character
- CRC (Cyclic Redundancy Check)
- Checksum
The error detection methods include:
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