Which layer of the OSI model handles the transmission of packets?

The transmission of packets is primarily handled by the Transport layer of the OSI model. This layer is responsible for providing reliable or unreliable delivery of data segments between devices, ensuring that data packets are transferred correctly and in order. It offers error detection and correction, flow control, and allows for the segmentation of data to optimize the use of the network.

The Transport layer facilitates communication between the processes running on hosts and is involved in establishing connections, ensuring data transfer reliability, and managing the flow of data between sender and receiver. Protocols like Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) operate at this layer, performing essential tasks that help maintain the integrity and order of the data packets transmitted across the network.