Transmission Control Protocol / Internet Protocol (TCP/IP)
- Computer network protocols created in the 1970's by DARPA,an agency of the United States Departmet.
- TCP/IP is a network protocols that enable computers to communicate over network.
- Its provide end-end connectivity specifying how data should formatted,addressed,transmitted,routed and received at the destination.
- TCP/IP Layer
- i) Link Layer
+networking scope of the local network connection to which a host is attached
+The processes of transmitting and receiving packets on a given link can be controlled both in the software device driver for the network card
ii) Internet Layer
+solves the problem of sending packets across one or more networks.this process is called routing.
+performs 2 basic functions (Host addressing and identification and Packet routing)
iii) Transport Layer
+End-to-end message transfer capabilities independent of the underlying network, along with error control, segmentation, flow control, congestion control, and application addressing (port numbers).
iv) Application Layer
+refers to the higher-level protocols used by most applications for network communication.
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