Networks

Networks

1. A group of computers that are able to communicate with each other.

2. Advantages

   • Ability to share files
   • Lower software costs
   • Improved security
   • Easier to backup files

3. Disadvantages

   • Technical knowledge needed
   • No access if server fails
   • Cost to setup and maintain

4. Benefits to organisations

   • Remote management
   • User monitoring
   • Central backup
   • Quicker to install software
   • Central pool of documents

5. Networks in homes

   • Advantages
     • Only need one set of hardware
     • Can do a backup of all data
     • Can access all files from any machine
     • Parents can monitor what their children are doing
   • Disadvantages
     • Extra money needs to be spent cabling the whole house
     • If one system gets infected they all do
     • Health problems associated with networks

6. Network Manager

   • Advantages
     • Can monitor what staff are doing
     • can install software from a central point
     • Backups can be done centrally
     • Can send popup messages
     • Can ensure anti-virus is up to date

7. LAN

   • A network where the linked hardware is confined to a single office or site and where all the wires and other devices needed for the LAN are owned by the organisation.

8. WAN

   • a network where the hardware is spread over a wide geographical area and where the organisation does not own some or all of the telecommunications equipment used.

9. Hospitals

   • X-rays are available instantly from radiology, this allows for quicker and more efficient diagnosis
   • Sites such as NHS Direct are available allowing patients to receive information without leaving home
   • Doctors can access blood test results straight from the lab, allowing for quicker and more up to date results