network

network

1. advantages

   • user restraints
   • being able to log on to any computer
   • you can use your password on any computer

2. disadvantages

   • the cost
   • security concerns
   • virus and malware

3. types of network

   • lan
     • local area network
   • wan
     • wide area network
     • the internet is a wan
   • topology
     • star
       • advantages
         • its fast
         • easy to add new computers
         • low chance of a catastrophy
       • disadvantages
         • its expensive
         • a failure of the switch will take down the network
     • bus
       • advantages
         • cheap to install
       • disadvantages
         • high chance of a catastrophy
         • high chance of collisions
     • ring
       • advantages
         • cheap to install
         • no collisions
       • disadvantages
         • high chance of a catastrophy
         • hard to add new computers
     • mesh
       • advantages
         • multiple devices can transmit data simultaneosly
         • a failure of one device does not cause a failure
         • adding another does not disrupt data transmittion
       • disadvantages
         • the cost
         • building the topology takes time
         • the chance of redundant connections is high
   • ip address
     • is a unique value assigned to every computer on a network used to identify it
     • ip addressess have up to 4 numbers
       • such as 105.30.0.50
         • 255.255.255.255 is the highest it can go up to