Computer Science for IGCSE & O level - Data Transmission (Section 4 - No. 33)
When using ARQ, if an error is detected, what typically happens?
The data is immediately discarded.
The receiver sends a NAK to the sender.
The transmission speed is increased to compensate.
The sender continues to send the next block of data.
Giải thích
If an error is detected, the receiver typically sends a negative acknowledgment (NAK) to the sender.