This section aims to lay the foundation of the course by introducing
the basic concepts behind data communications. This includes
definitions of bit, baud, binary code and both asynchronous and
Introduces the standards and principles behind data interfaces.
Includes overviews of physical, electrical and functional
interfaces, RJ45 and Optical cable. The concept of flow control is
Reviews the basic analogue transmission methods, including
Digital/Analogue conversion and modem standards for data
transmission over the PSTN.
Outlines the features of digital transmission, including the
concepts of Pulse Code Modulation, Time Division Multiplexing, the
2.048 Mbit Frame, Plesiochronous Digital Hierarchy (PDH) and
Synchronous Digital Hierarchy (SDH).
Introduces the features and functions of protocols and how they
relate to the OSI 7 layer model.
Local Area Networks
Defines the concept of a Local Area Network and outlines some of the
principles involved with LANs. Includes overviews of CSMA/CD,
Bridges, Switches, Spanning Tree and Routers.
Packet Technology (X.25)
Outlines the concept of Packet Technology and uses the X.25 protocol
as an example. Includes an overview of the layer 2 protocol HDLC and
how Packet Switches operate by using tables to route Virtual
Reviews development of Wide Area Networking technology and features
key protocols used for WAN transmissions - including ISDN, Frame
Relay, ATM, Broadband and IP.
The final section overviews the Internet and in particular IP
Addressing, TCP/IP and DNS.