UDP (user datagram protocol)

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  • A connectionless protocol within TCP/IP that corresponds to the transport layer in the International Standard Organization's Open System Interconnect (ISO/OSI) reference model. UDP converts data messages generated by an application into packets to be sent through IP, but it is unreliable because it does not establish a path between sender and receiver before transmitting and does not verify that messages have been delivered correctly. UDP is more efficient than TCP, so it is used for various purposes, including Simple Network Management Protocol (SNMP). The reliability depends on the application that generates the message. [Exchange 2007]
    Microsoft - Cite This Source - This Definition
  • Browse Related Terms: Message Header, SMTP (Simple Mail Transfer Protocol), SPF (sender policy framework), TCP (Transmission Control Protocol), X-header

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