Final answer:
RDT 3.0 handles garbled acknowledgements by using timeouts and sequence numbers, ensuring reliable data transmission by resending packets when acknowledgements are unclear.
Step-by-step explanation:
The protocol rdt3.0 is designed to handle reliable data transfer over a packet-switched network that may introduce errors such as garbled packets. When an acknowledgement (ACK) or negative-acknowledgement (NACK) packet is garbled, the sender will not understand the feedback and will therefore not know whether to resend the data packet or move on to the next one.
To manage this, rdt3.0 incorporates a timeout mechanism. If the sender does not receive a clear ACK or NACK within a certain time frame, it assumes the packet or the acknowledgement was lost or garbled and resends the same data packet.
The receiver uses sequence numbers to determine whether the incoming packet is a new packet or a retransmission so that it does not deliver the same data to the application layer more than once. This use of sequence numbers allows the receiver to send a correct ACK for a retransmitted packet even if the previous ACK got garbled.
In summary, the rdt3.0 protocol ensures reliable data transmission by incorporating timeouts and sequence numbers, allowing resending of data if an acknowledgement is not clearly received, thus handling the situation where acknowledgement packets are garbled.