Osi Model Questions Medium
In the OSI Model, data reassembly is a process that occurs at the Transport Layer (Layer 4) and is responsible for reconstructing the original data stream from the received packets.
When data is transmitted over a network, it is divided into smaller units called packets. Each packet contains a portion of the original data along with additional information such as the source and destination addresses. These packets are then transmitted individually across the network.
At the receiving end, the Transport Layer receives these packets and checks for any errors or missing packets. If any packets are missing or corrupted, the Transport Layer requests retransmission of those packets from the sender.
Once all the packets are received without any errors, the Transport Layer begins the process of data reassembly. It uses the sequence numbers present in each packet to determine the correct order of the packets. The packets are then rearranged in the correct order to reconstruct the original data stream.
After the data reassembly process is complete, the reconstructed data is passed to the higher layers of the OSI Model for further processing and delivery to the appropriate application.
Overall, data reassembly in the OSI Model ensures that the transmitted data is received accurately and in the correct order, allowing for reliable communication between network devices.