Computer Science for IGCSE & O level - Data Transmission (Section 1 - No. 31)

What is the main function of an Automatic Repeat Request (ARQ)?

To encrypt the data being sent.

To detect and correct errors that occur during transmission.

To increase the transmission speed.

To improve the efficiency of data compression.

ARQ's primary function is to ensure reliable data transfer by detecting errors and requesting retransmission of corrupted data.