Computer Science for IGCSE & O level - Data Transmission (Section 4 - No. 10)
What is the primary role of the receiver in an ARQ system?
To encrypt the data.
To send the data.
To acknowledge received data or request retransmission.
To compute the checksum for the data.
Giải thích
The receiver confirms if data has been received correctly and requests retransmission if errors are detected.