Computer Science for IGCSE & O level - Data Transmission (Section 13 - No. 49)
What happens if the sender receives a negative acknowledgement (NAK) in ARQ?
The data is assumed to be received correctly.
The data is retransmitted.
The connection is terminated.
The data is compressed.
ব্যাখ্যা
A negative acknowledgement indicates an error, and the data must be resent.