COMPUTER FUNDAMENTALS

Detailed explanation-1: -The network layer is the third layer of the OSI model which provides communication between hosts of different networks. The network layer divides the data received from the transport layer in the form of packets.

Detailed explanation-2: -Packet segmentation happens at layer four of the OSI model; the transport layer. Segmentation may be required when: The data packet is larger than the maximum transmission unit supported by the network.

Detailed explanation-3: -TCP then divides the data that is received from the application layer into segments and attaches a header to each segment. Segment headers contain sending and receiving ports, segment ordering information, and a data field that is known as a checksum.

Detailed explanation-4: -The transport layer module passes each segment to the network layer module, where it becomes the payload for a single IP datagram. The destination network layer module extracts the payload from the IP datagram and passes it to the transport layer module, which interprets the information as a message segment.

Detailed explanation-5: -Data Link The second layer of the OSI model concerns data transmission between the nodes within a network and manages the connections between physically connected devices such as switches.