COMPUTER NETWORKING

Detailed explanation-1: -In terms of the OSI model, IP is a network-layer protocol. It provides a connectionless data transmission service, and supports both TCP and UDP. Data is transmitted link by link; an end-to-end connection is never set up during the call. The unit of data transmission is the datagram.

Detailed explanation-2: -TCP is an example of a connection-oriented protocol. It requires a logical connection to be established between the two processes before data is exchanged. The connection must be maintained during the entire time that communication is taking place, then released afterwards.

Detailed explanation-3: -IP is considered to be connectionless because it does not establish a session with a remote computer before sending data. Data sent via connectionless methods are called datagrams. An IP packet can be lost, delayed, duplicated, or delivered out of sequence and there is no attempt to recover from these errors.

Detailed explanation-4: -IP is connectionless because it treats each packet of information independently. It is unreliable because it does not guarantee delivery, meaning, it does not require acknowledgments from the sending host, the receiving host, or intermediate hosts. IP provides the interface to the network interface level protocols.