![]() Link: data transfer between neighboring network elements Network: routing of datagrams from source host to destination host Transport: Host process-porcess data transfer TCP/IP Protocol Suite is organised into four layer with a combination of different protocols in each layer. Each protocol is responsible for a specific subtask Ī structrued set of protocols is called a communication architecture or protocol suite. each protocol is implemented independently To reduce the complexity, multiple protocol layers proposed, which: ![]() Network eneties and parties should adhere a set of rules and conventions (protocols) to achieve the cooperation between each other, however, it is quite complex. Protocols defines the format, order of messages sent and received among network eneites, and actions taken on msg transmission, receipts. IETF:Internet Engineering Task Force is responsible for internet standards.Īll standards of Internet are published as RFC(Request For Comments), but not all RFCs are internet Standards. ![]() In the Internet, the protocols are everywhere, to control sending ,receiving of msgs. From an "internetworking" view: the Internet is network of networks, interconnected ISP (Internet service sprovider). ![]() From a service view: the Internet is an infrastructure that provides services to Applications, and provides programming interface to distributed Applications (API) A global information system consists of private and public, academic, business and government computer networks. ![]()
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