Transport-Level Protocols
The transport-level protocols can be considered the workhorses of the protocol stack. They do their job in the background, generally invisible to the user. These protocols include
Transmission control protocol (TCP)
Internet protocol (IP)
Internet control message protocol (ICMP)
Internet group management protocol (IGMP)
Address resolution protocol (ARP)
Transmission Control Protocol
TCP is a reliable, connection-oriented delivery service. Connection-oriented means that a connection must be established before hosts can exchange data. Guaranteed delivery is accomplished by numbering each segment transmitted. An acknowledgment then verifies that the data was received.
The data is transmitted in segments. For each segment sent, ...
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