Information TechnologyUnit 1 Outcome 2: Networks

Physical Design of a networkPeople who develop & support networks

Physical Design of a networkNetwork diagrams

Networks in medium to large organisations can become very complex, with the number of devices that can connect throughout the premises.

Network diagrams use straight lines to represent cables, and icons are used to represent communications devices.

Physical design of a network

Developing a networkNetworks are vital to the operation of most

organisations.

When designing a network, it is paramount that a user’s needs are met and implemented.

A new network may need to be established or a significant change may need to be made to the existing network if the company’s goals are not currently being met.

Developing a networkSystems analyst

Role: to analyse the requirements of the organisation & its users, as well as design & develop new or improved information systems.

Systems/network programmerInstall & maintain software on the network

Technical specialistsInstall & configure the communications devices,

network hardware & communications channels

Supporting a networkEstablished networks require a number of

professionals who are responsible for support & maintenance tasks.

These roles include:Network AdministratorNetwork support technicianHelp-desk supportWebsite developer

ActivityPage 90-91 has descriptions of each of the

aforementioned roles.

You are required to read through these and summarise each role on the following slides.

Supporting a networkNetwork administrator

Supporting a networkNetwork support technician

Supporting a networkHelp-desk support

Supporting a networkWebsite developer

Network documentationA procedures manual should be prepared by the network

administrator shortly after a network is built.

It should outline the steps required to operate, maintain & expand the network.

Procedures manuals are then used by the network administrator, network support techs, help-desk operator & visiting technical specialists, in order to help them perform maintenance tasks.

It should also include the following:Description of techniques required for each procedureConfiguration information for the various devices & software on

the network.

Network documentationA network procedures manual is a document prepared

by the network admins that outline the steps required to operate, maintain & develop the network.

The manual is intended to be used by the network admin, network support techs, help-desk operators & visiting technical specialists to help them perform necessary tasks.

It should include a description of the techniques required for each procedure, and a listing of configurations for various devices & software on the network.

RevisionTest Your Knowledge Questions 26-43