Question: Consider a reliable data transfer protocol that uses only NAKs. In such a scheme, as long as the receiver receives packets in order, the receiver

Consider a reliable data transfer protocol that uses only NAKs. In such a scheme, as long as the receiver receives packets in order, the receiver does not send any feedback to the sender. Only when the receiver sees a gap (e.g. receives packet n, then packet (n+k), where k > 1) does it send a NAK of packet (n+1). Suppose the sender sends data infrequently. Would a NAK-only protocol be preferable to a protocol that uses ACKs? Why?

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