Network Devices

The UDP is process to process protocol that adds only port address, check-sum error control and length information to the data from the upper layer.

The TCP provides full transport layer services to application. TCP is a reliable stream transport protocol. The term stream in this context means connection-oriented: a connection must be established between both ends of a transmission before either can transmit data.

The application layer in TCP/IP is equivalent to the combined session, presentation and application layer in the OSI model. Many protocols are defined at this layer.

The UDP is process to process protocol that adds only port address, check-sum error control and length information to the data from the upper layer.

The TCP provides full transport layer services to application. TCP is a reliable stream transport protocol. The term stream in this context means connection-oriented: a connection must be established between both ends of a transmission before either can transmit data.

The transport layer is represented in TCP/IP by two protocols, TCP and UDP. The IP is a host-to-host protocol; UDP and TCP are transport level protocols. IP can deliver a packet form one physical device to another. UDP and TCP are responsible for delivery of a message from a process to another process (running programs)