| Students learn about: | Students learn to: |
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, 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 servers
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- 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
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examples of communication
systems - teleconferencing
systems
- messaging systems
- email
- voice mail
- Voice Over Internet Protocol
- other
systems dependent on communication technology such as:
- e-commerce
- EFTPOS
- electronic banking
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- use a communication system to transmit and receive audio, video and text data
- for given examples, identify the participants, information/data, information technology, need and purpose
- for given examples explain how data is transmitted and received
- for given examples, identify the advantages and disadvantages of the system
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transmitting and receiving in
communication systems
- transmission media, including:
- wired transmission
- twisted pair
- coaxial cable
- optic fibre
- wireless transmission
- microwave
- satellite
- radio
- infrared
- characteristics of media in terms of speed, capacity, cost and security
- communication protocols, including:
- – application level protocols
- – communication control and addressing level protocols
- – transmission level protocols
- strategies for error detection and error correction
- • network topologies, including:
- – star
- – bus
- – ring
- – hybrid
- – wireless networks
- functions performed by the following hardware components used in
communication systems:
- hubs and switches
- routers
- modems
- bridges
and gateways
- Network Interface Cards (NIC)
- mobile
phones
- cables
- wireless access points
- bluetooth devices
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- compare and contrast traditional communication systems with current electronic methods
- represent a communication system diagrammatically
- predict developments in communication systems based on current trends
- • simulate activities involved with communication in areas such as
- – e-commerce
- – EFTPOS
- – Internet banking
- for a given scenario, choose and justify the most appropriate transmission media
- diagrammatically represent the topology
- describe the location and role of
hardware components on the network
- compare the functions of different
hardware components
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- characteristics of network operating software
- similarities and differences between the Internet, intranets and extranets
| - identify the main characteristics of network operating software
- compare and contrast the Internet, intranets and extranets
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other information processes in
communication systems
- collecting, such as
- – the phone as the collection device
with voice mail
- – EFTPOS terminal as a collection
device for electronic banking
- processing, including:
- – encoding and decoding analog and
digital signals
- – formation of data packets
- – routing
- – encryption and decryption
- – error checking
- - parity bit check
- - check sum
- - cyclic redundancy check (CRC)
- displaying, such as
- – the phone as the display device with
voice mail
- – EFTPOS terminal as a display
device for electronic banking
| - distinguish between data in analog and
digital form
- justify the need to encode and decode
data
- identify where in a communication
system signal conversion takes place
- describe the structure of a data packet
- describe methods to check the accuracy
of data being transmitted
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managing communication systems
- network administration tasks, such as:
- – adding/removing users
- – assigning users to printers
- – giving users file access rights
- – installation of software and sharing
with users
- – client installation and protocol
assignment
- – logon and logoff procedures
- – network-based applications
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- detail the network management
software in a given network
- describe the role of the network
administrator and conduct network
administration tasks
- demonstrate logon and logoff
procedures, and justify their use
- adopt procedures to manage electronic
mail
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issues related to communication
systems
- security
- globalisation
- changing nature of work
- interpersonal relationships
- e-crime
- legal
- virtual communities
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- describe and justify the need for ethical
behaviour when using the Internet
- discuss the social and ethical issues
that have arisen from use of the
Internet, including:
- – the availability of material normally
restricted
- – electronic commerce
- – domination of content and control of
access to the Internet
- – the changing nature of social
interactions
- identify the issues associated with the
use of communication systems,
including:
- – teleconferencing systems
- – messaging systems
- – e-commerce
- – EFTPOS
- – electronic banking
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