Abbreviated as COS, connectionless service is one of two techniques used in datacommunications to
transfer data at the
Transport Layer (Layer 4). A connectionless service does not require a
session connection between sender and receiver; the sender starts sending
datagrams to the destination. In contrast with a
connection-oriented service, this is less reliable
but faster.
Connection-oriented and connectionless services The two primary types of services which are made available by a particular network layer and which actually are also useful classifications for many non-technical types of service industries are known as connection-oriented and connectionless communication.
