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Lecture Wireless and mobile computing – Chapter 14: Protocols and protocol suit review

Lecture Wireless and mobile computing – Chapter 14: Protocols and protocol suit review. The following will be discussed in this chapter: Network access layer, transport layer, protocols, protocol data unit, protocol architecture, TCP/IP stack, layered approach and its advantages, router. | Protocols and Protocol Suit Review Lecture 14 Overview Network Access Layer Transport Layer Protocols Protocol Data Unit Protocol Architecture TCP/IP Stack Layered Approach and its Advantages Router What is a Protocol ? Q:- What is a protocol? Communication Protocols Definition Protocol is a set of rules that govern all aspect of data communication between computers on a network. These rules include guidelines that regulate the following characteristics of a network: access method, allowed physical topologies, types of cabling, and speed of data transfer. A protocol defines what, how, when it communicated. The key elements of a protocol are syntax, semantics and timing. Protocols are to computers what language is to humans. Since this article is in English, to understand it you must be able to read English. Similarly, for two devices on a network to successfully communicate, they must both understand the same protocols. Key Elements of protocol Syntax The structure or format of the data. Eg. A simple protocol; ii) Semantics - Refers to the meaning of each section of bits. - how is a particular pattern to be interpreted, and what action is to be taken based on that interpretation. Eg. Does an address identify the route to be taken or the final of the message? Elements of protocol iii) Timing Refers to two characteristics: When data to be sent How fast it can be sent Eg. If a sender produces data at 100 Mbps but the receiver can process data at only 1 Mbps, the transmission will overload the receiver and data will be largely lost. Elements of protocol Characteristics of protocol Direct / indirect communication between two entities maybe direct or indirect. i) point-to-point link - connection provides a dedicated link between two devices - the entities in these systems may communicate directly that is data and control information pass directly between entities with no intervening active agent. ii) multipoint link - connection more than . | Protocols and Protocol Suit Review Lecture 14 Overview Network Access Layer Transport Layer Protocols Protocol Data Unit Protocol Architecture TCP/IP Stack Layered Approach and its Advantages Router What is a Protocol ? Q:- What is a protocol? Communication Protocols Definition Protocol is a set of rules that govern all aspect of data communication between computers on a network. These rules include guidelines that regulate the following characteristics of a network: access method, allowed physical topologies, types of cabling, and speed of data transfer. A protocol defines what, how, when it communicated. The key elements of a protocol are syntax, semantics and timing. Protocols are to computers what language is to humans. Since this article is in English, to understand it you must be able to read English. Similarly, for two devices on a network to successfully communicate, they must both understand the same protocols. Key Elements of protocol Syntax The structure or .