What is network
- 1.
- 2. Collection of computersand devices connected via communications devices and transmission media.Network
- 3. Network is:A wayof communication;
- 4. An area havinga connection with each other and
- 5. A group ofconnected computers and peripherals in a certain area.For us:
- 6. LAN- Local AreaNetwork
- 7. WLAN-Wireless Local AreaNetwork
- 8.
- 9.
- 10. SAN-Storage Area Network,System Area Network, Server Area Network or sometimes Small Area Network
- 11.
- 12.
- 13. DAN-Desk Area NetworkExamplesof a Network:
- 14. Advantagesof a Network:Auser can logon to a computer anywhere on the network and access their work files from the file server.
- 15. Computers can bemanaged centrally - with the same software installed on each one.
- 16. Time - itis much faster to install an application once on a network - and copy it across the network to every workstation.Sharing printers, plotters, modems etc saves money and time.
- 17. Security - theNetwork Manager can allocate usernames and passwords to all users to try to prevent unauthorized access.
- 18. It is easyand convenient to monitor users - for example websites visited or documents printed - this can be done using software running on the server.Advantages of a Network:
- 19. If something goeswrong with the file server the whole network is unable to operate.
- 20. The technical skillsneeded to manage a network are much higher than working on a stand-alone computer.
- 21. It would takea long time to install software applications on each computer - one at a time!Disadvantagesof a Network:
- 22. Users may useup too much of the storage space and this may cause problems on the network.
- 23. Users may usetoo much bandwidth - for example when listening to music files or watching video clips - preventing others from using the network facilities properly.Disadvantagesof a Network: