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Difference between Stop and Wait protocol and Sliding Window protocol
Stop and Wait protocol
Stop and Wait protocol is a protocol for flow control mechanism. In this protocol, sender sends one frame at a time and waits for acknowledgment from the receiver. Once acknowledged, sender sends another frame to the receiver.
Sliding Window protocol
Stop and Wait protocol is also a protocol for flow control mechanism. In this protocol, sender sends multiple frames at a time and retransmit the frames which are found to be corrupted or damaged.
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, sender sends single frame and waits for acknowledgment from the receiver. | In Sliding window protocol, sender sends multiple frames at a time and retransmits the damamged 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 increasing the efficiency of the protocol. |
| 5 | Efficiency | Stop and Wait protocol efficiency is formulated as 1/(1+2a) where a is 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 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. |
Updated on 16-May-2020 11:10:13
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