Nt1330 Unit 6

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Discussion Forum Unit 6: "

The given protocol is based on UDP, and the Stop and Wait ARQ is a simple, reliable, and error-detecting protocol commonly used in communication systems. However, it has certain limitations, particularly in terms of efficiency and latency, which can significantly affect its performance, especially in scenarios with high bandwidth and propagation delay. I would like to explain the problems I explored along with the advantages of this protocol.

Stop and Wait ARQ operates by sending a single data packet and then waiting for an acknowledgment (ACK) from the receiver before sending the next packet. This approach ensures reliable transmission and sequence preservation of data, but can lead to inefficiencies, particularly in scenarios with high bandwidth and propagation delay. …show more content…
This situation can lead to potential data loss or duplication upon sender recovery or receiver retransmission attempts.

To address this issue, additional mechanisms such as timeouts and sequence numbers can be incorporated into the protocol to detect and recover from such failures. For example, the sender can set a timeout for receiving an acknowledgment and retransmit the packet if the timeout expires without receiving the ACK. Additionally, using sequence numbers allows the receiver to detect duplicate packets and discard them accordingly, ensuring data integrity despite process crashes.

To sum up, while Stop and Wait ARQ offers simplicity and reliability, it is essential to consider its limitations and potential vulnerabilities, especially in distributed systems prone to process crashes. By understanding these shortcomings and implementing appropriate mechanisms for error detection and recovery, developers can design more robust and resilient communication

Nt1330 Unit 6

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