connectionless service Last modified: Wednesday, May 02, 2007
Abbreviated as COS, connectionless service is one of two techniques used in data communications 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.
•E-mail this definition to a colleague• For internet.com pages about connectionless service . Also check out the following links! 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.	Networking Standards Networks communications connectionless connection-oriented service data datagram OSI packet protocol session Give Us Your Feedback