The process of tcp on one computer marking a tcp segment as segment 1, and the receiving computer then acknowledging the receipt of tcp segment 1 is an example of same-layer interaction.
- Layers is a specific type of software method that internet hosts use to communicate (or layered protocols).
- In the context of the TCP/IP and OSI Model layers, industry technical jargon uses particular names for data units. Framing for the data connection layer, packets for the network layer, and segments for the transport layer.
- A datagram is what is referred to as a unit of data in the larger Internet context.
- TCP/IP has four layers compared to the seven in the OSI Model. Each layer conveys its intended action to its peer on the other end of a link through same-layer interaction.
- Encapsulation is the mechanism used in adjacent-layer interaction to attach a PDU to a protocol header as it travels across the layers.
- A header, as its name suggests, sits before the sent data and is the first item that the receiving host decodes. It has source and destination addresses and may also include extra fields or error checks.
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