Advantages and disadvantages associated with various network topologies, cable options and factors governing selection of an appropriate cable.

As an IT manager, you have been asked to identify the advantages and disadvantages associated with various network topologies. You should also round off the various cable options and discuss the factors that would govern your selection of an abstract cable.

Network

A network consists of two or more computers that are link to share common programs or applications, nominate common facilities, provide annoy to shared services (e.g. entropybase, CD-ROM libraries, printers), exchange files, or allow electronic communications. Networks are a popular room to reduce the cost of computer software licences and manage efficient wasting disease of resources, and can incorporate security measures to grant privileges and restrict access to certain users. They are linked through cables, telephone lines, radio receivercommunication waves, satellites or infrared light beams. There are threesome basic types of network:

·Local orbit Network (LAN) - confine to a relatively small area, e.g. building or interlocking; one computer is the file innkeeper and stores all software controlling the network, the other computers are work stations and whitethorn have additional software on their hard drives exclusively are generally less powerful than the file server; they are usually connected by cables.

·Metropolitan Area Network (MAN) - usually covers wider geographic areas, e.g. cities, districts; smaller networks are complect for easy dissemination of information throughout the network, e.g. government agencies, local anaesthetic libraries.

·Wide Area Network (WAN) - connect large geographic areas, such as an entire State, or even globally.

LANs

The next characteristics differentiate one LAN from another:

·Topology - the geometric arrangement of devices on the network.

·Protocols - the rules and encoding specifications for sending data on a network, including guidelines regulating access method, allowed physical topologies, types of cabling and speed of data transfer, e.g. Ethernet, LocalTalk, Token Ring.

·Media - how devices are connected (e.g. cable or radio waves)

Topology...

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