Visualizing Sliding Window Protocol with Size 2: Step-by-Step Animation скачать в хорошем качестве

Visualizing Sliding Window Protocol with Size 2: Step-by-Step Animation

In a sliding window protocol with a window size of 2, the sender can transmit up to two packets before requiring an acknowledgment to proceed further. Here’s how it works: Transmission: The sender transmits two packets, say Packet 1 and Packet 2, without waiting for acknowledgment of the first packet. Acknowledgment and Window Movement: Once the receiver successfully receives Packet 1, it sends an acknowledgment (ACK) back to the sender. Upon receiving the ACK for Packet 1, the sender's window "slides" forward, allowing it to send the next packet, Packet 3. Similarly, after receiving an ACK for Packet 2, the sender can slide the window further to transmit Packet 4. Error Handling: If Packet 2 is lost or corrupted, the receiver will not acknowledge it. The sender detects the missing acknowledgment through a timeout or duplicate ACKs for Packet 1. The sender then retransmits Packet 2, ensuring reliable delivery before moving the window forward. Efficiency: The small window size limits the number of unacknowledged packets in transit, which may reduce efficiency in high-latency networks but provides simpler control and flow management. This mechanism is suitable for simple and low-bandwidth networks, balancing reliability and manageable flow control.