Networks

Networks

1. Advantages

   • Hardware can be shared
   • Software can be shared
   • Networked computers can communicate
   • Networked computers can be centrally controlled by a network manager
   • Files stored on a server allow for easier back-up scedules than if the files were stored on multiple computers.

2. Disadvantages

   • The cost of cabling and setting up can be high
   • A virus can spread through a network very quickly (infecting each computer)
   • Hackers may gain unauthorised access to files saved on a network server
   • Networks can fail to work properly - causing loss of acccess to data, hardware and software.

3. Types of servers/networks

   • File server - is a computer on a network that holds files that can be used by other computers on the same network.
   • Client-Server network - has one computer acting as a file server.
   • Peer-to-Peer network - all computers are of equal importance.

4. Net types

   • Intranet - a network providing simular services to the internet but only available within one company.
   • Extranet - Part of antranet that can be accessed by autorised members of the public.
   • World Wide Web - the collection of multimedia info or recources available on the internet.

5. Protection

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