Methods of Error Detection

These flashcards cover key vocabulary and concepts related to methods of error detection, including definitions and explanations of different terms and methods.

Error Detection

The process of checking data integrity during transmission to identify any errors.

Interference

Any external disturbance that can corrupt data being transmitted over a cable.

Parity Check

A method to check if data has been changed or corrupted during transmission based on the number of 1-bits in a byte.

Even Parity

A parity checking method where the parity bit is set to 0 if the number of 1-bits is even.

Odd Parity

A parity checking method where the parity bit is set to 1 to ensure an odd number of 1-bits.

Checksum

A value calculated from a data block to check for errors after data transmission.

ARQ (Automatic Repeat reQuest)

A protocol that uses acknowledgements to ensure data is received correctly and requests re-transmission if errors are detected.

Check Digit

A digit added to a code to verify the authenticity of the data and to detect errors.

Echo Check

A method where data sent is returned to the sender to verify that it was received correctly.

Cyclic Redundancy Check (CRC)

An error-detecting code used to detect accidental changes to raw data.