Questions On The Protocol Architecture

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Assignment 1 2.3 Protocol: A protocol is predefined set of rules or conventions which governs the way in which two entities co-ordinately cooperate to exchange data. 2.4 Protocol Data Unit(PDU): A PDU is the combination of data from the next higher communications layer and control information. 2.5 Protocol Architecture: The software structure that implements the communications function. Typically, the protocol architecture consists of a layered set of protocols, with one or more protocols at each layer. 2.6 TCP/IP: Transmission Control Protocol/Internet Protocol (TCP/IP) are the two protocols which were designed to provide low level support for internetworking. The term is also used generically to refer to a more comprehensive collection of protocols developed by the U.S. Department of Defense and the Internet community. 2.7 Advantages of Layering in TCP/IP architecture: Layering is the process which is used and helped to reduce the overall problem, which is huge in size, to number of sub problems, which are manageable is size. 2.8 Router: A router is a device that is used to connect dissimilar device. It is present and operates at the Network layer of the OSI model. 2.9 Version of IP, that is prevalent today: IPv4, is the version of IP that is prevalent today. It may also be expected that IPv6 may be prevalent in the future. 2.10 Does all Traffic on internet use TCP ? No, we cannot say like that as there are other protocols such as UDP, which are also used
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