e853c34c__and_Educational_Standards_NSW__Students_learn_to_
[Students learn about:] characteristics of communication systems communication systems as being those systems which enable users to send and receive data and information the framework in which communication systems function, demonstrated by the following model the functions performed within the communication systems in passing messages between source and destination, including: message creation organisation of packets at the interface between source and transmitter signal generation by the transmitter transmission synchronising the exchange addressing and routing error detection and correction security and management the roles of protocols in communication handshaking and its importance in a communications link functions performed by protocols at different levels the client–server model the role of the client and the server thin clients and fat clients examples of clients such as web browsers and mail clients examples of servers such as print servers, mail servers and web server [Students learn to:] 
use applications to create and transmit messages establish a communications link and describe the steps that take place in its establishment identify and describe specified protocols at different stages of the communication identify client processing and server processing describe the advantages and disadvantages of client–server architecture
9.3 Communication Systems - Board of Studies Teaching and Educational Standards NSW
Students learn to: