Differentiate between automatic repeat request and forward error correction
operating systems. (4 marks)DICT MOD 1 July 2020
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Differentiate between automatic repeat request and forward error correction
operating systems. (4 marks)DICT MOD 1 July 2020
Automatic Repeat Request (ARQ) is a method used in digital communications to ensure the reliable transmission of data. It works by sending a message and then waiting for an acknowledgement (ACK) from the receiver. If the ACK is not received within a certain time period, the sender will resend the message. This process continues until the receiver sends an ACK or the sender gives up and declares the transmission a failure.
Forward Error Correction (FEC) is a method used to improve the reliability of data transmission over noisy communication channels. It works by adding redundant information to the data being transmitted. This redundant information can be used by the receiver to detect and correct errors that may have occurred during transmission.