When TCP is used, the lost packet can be retransmitted by the sender. Please refer to the documents (books or websites) and explain how such retransmission can happen for the lost... When TCP is used, the lost packet can be retransmitted by the sender. Please refer to the documents (books or websites) and explain how such retransmission can happen for the lost packet.
Understand the Problem
The question is asking for an explanation of how TCP handles retransmission of lost packets. It seeks references from documents or websites to support the explanation of this process.
Answer
TCP retransmits lost packets using timeouts and duplicate ACKs to ensure reliable data delivery.
TCP detects lost packets through timeouts and duplicate acknowledgments. If an acknowledgment isn't received in time, TCP considers the packet lost and retransmits it. Similarly, receiving three duplicate ACKs suggests a missing packet, prompting a fast retransmission.
Answer for screen readers
TCP detects lost packets through timeouts and duplicate acknowledgments. If an acknowledgment isn't received in time, TCP considers the packet lost and retransmits it. Similarly, receiving three duplicate ACKs suggests a missing packet, prompting a fast retransmission.
More Information
TCP employs retransmission techniques to enhance reliability, using both time-based and acknowledgment-based strategies to detect and resend lost packets. This is crucial for maintaining data integrity in networks.
Tips
A common mistake is assuming TCP re-sends immediately upon packet loss detection; it often depends on timeouts or multiple duplicate ACKs.
Sources
- Retransmission Rules for TCP | Baeldung on Computer Science - baeldung.com
- How TCP deals with lost packet? - Quora - quora.com
- A primer on TCP packet retransmissions and how they impact ... - linkedin.com
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