Encapsulation is the process of dividing a message into packets, adding control and other information, and then delivering the packets through the transmission medium..
What is the encapsulation ?
- Encapsulation is the process of dividing a message into packets, adding control and other information, and then delivering the packets through the transmission medium. The OSI model uses a five-step encapsulation/decapsulation process for data:
- Upper layers prepare the data for network transmission.
- The Transport layer divides the data into units known as segments and adds control and sequencing information.
- The segments are transformed into packets by the network layer, which also adds logical network and device addresses.
- The physical device addressing data is added as the packets are converted into frames by the data link layer.
- For transmission via the transmission medium, the Physical layer turns the frames into bits.
Transport Layer - Segments
Network Layer - Packets
Data Link Layer - Frames
Physical Layer - Bits
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