Computer Science for IGCSE & O level - Data Transmission (Section 5 - No. 27)
Which of the following best describes "automatic repeat request (ARQ)"?
A method for encrypting data.
A system for detecting and correcting errors by retransmitting data.
A method to make the data transfer faster.
A technique for compressing data.
Giải thích
ARQ is a system designed to ensure reliable data transfer by requesting retransmission of data that has been lost or corrupted.