Networks

Networks

1. LAN

   • Local Area Network
   • E.G. School network
   • over a small area ( one building or within a KM)

2. WAN

   • Wide Area Network
   • The Internet ( telecommunications network
   • Covers broad area

3. Stand-Alone-Computers

   • Hardware needed
     • Hubs
       • Ethernet Hub
       • Active Hub
       • Network Hub
       • repeater hub
       • connects multiple devices together
     • Switches
       • Connects computers together through a networking device by using packet switching
     • Wireless Access Points
       • allows wireless devices to connect to a wired network using WIFI
   • Does not connect to a sever

4. Servers

   • Client Server
     • a computer where a server gives the computer its information
   • peer to peer network

5. Topologies

   • Ring
     • each node connects to exactly two other nodes, forming a single continuous pathway
   • Star
     • a star network consists of one central switch, hub or computer, which acts as a conduit to transmit messages.
   • Bus
     • nodes are connected in a straight line by a linier sequence of buses

6. Addresses

   • IP Addresses
   • Mac Addresses
   • Packets and Protocols

7. Security

   • User Access levels
   • Suitable Passwords
   • Encryption

8. Network Policies

   • Acceptable Use
   • Disaster Recovery
   • Fail Over
   • Back up
   • Archiving

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