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Explain difference between Stop and Wait protocol and Sliding Window protocol
Stop and Wait protocol
Stop and Wait protocol is a protocol for the flow control mechanism. In this protocol, the sender sends one frame at a time and waits for an acknowledgment from the receiver. Once acknowledged, the sender sends another frame to the receiver.
Sliding Window protocol
Stop and Wait protocol is also a protocol for the flow control mechanism. In this protocol, the sender sends multiple frames at a time and retransmit the frames which are found to be corrupted or damaged.
The following are some of the important differences between Stop and Wait protocol and Sliding Window protocol.
| Sr. No. | Key | Stop and Wait protocol | Sliding Window protocol |
|---|---|---|---|
| 1 | Mechanism | In Stop and Wait protocol, the sender sends a single frame and waits for an acknowledgment from the receiver. | In Sliding window protocol, the sender sends multiple frames at a time and retransmits the damaged frames. |
| 2 | Efficiency | Stop and Wait protocol is less efficient. | Sliding Window protocol is more efficient than Stop and Wait protocol. |
| 3 | Window Size | Sender's window size in Stop and Wait protocol is 1. | Sender's window size in Sliding Window protocol varies from 1 to n. |
| 4 | Sorting | Sorting of frames is not needed. | Sorting of frames helps to increase the efficiency of the protocol. |
| 5 | Efficiency | Stop and Wait protocol efficiency is formulated as 1/(1+2a) where a is a ratio of propagation delay vs transmission delay. | Sliding Window protocol efficiency is formulated as N/(1+2a) where N is no. of window frames and a is a ratio of propagation delay vs transmission delay. |
| 6 | Duplex | Stop and Wait protocol is half-duplex in nature. | Sliding Window protocol is full-duplex in nature. |
Published on 15-Apr-2020 07:04:30
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