Computer Science for IGCSE & O level - Data Transmission (Section 3 - No. 36)
In the context of data transmission, which of the following best describes the concept of an "Automatic Repeat Request (ARQ)"?
A method of data encryption.
A technique to improve transmission speed.
A method to request the retransmission of data if an error is detected.
A way to compress data.
Explication
ARQ is a mechanism that requests the retransmission of data if errors are detected.