Network

Network

1. Disadvantages

   • Expensive to set up.
     • Problems such as viruses can affect every computer on the network.
     • Expertise is needed to set up and maintain a network.

2. Advantages

   • Share resources such as printers and internet connection.
     • Share logins,so the same username and password can be used on every computer on the network

3. Types of networks

   • LAN:Local Area Network is a computer network that interconnects computers within a limited area such as a residence,school,laboratory,university campus or office building.
   • WAN:Wide Area Network is a telecommunications network that extends over a large geographic area for the primary purpose of computer networking.

4. Bus Topology

   • Advantages
     • Cheap to install.
   • Disadvantages
     • Lots of collisions
       • Slows down when a new computer is added.
       • High chance of catastrophic failure.

5. Ring Topology

   • Advantages
     • Cheap to instal.
       • No collisions [fast]
   • Disavantages
     • Difficult to expand
     • High chance of catastrophic failure

6. Star Topology

   • Advantages
     • Low chance of failure
     • No collision[fast]
   • Disadvantages
     • Expensive
     • Failure on the switch the whole thing will fail.

7. IP Address

   • An IP Address is a unique value assigned to every computer on a network, used to identify it.
   • Messages on a network have an IP Address attached, ehich id how a computer knows whether or not to keep the message.
   • The internet is a huge network with more devices than it's possible to assign a unique address to.
   • Unique address are assigned to businesses and houses.
   • These houses and businesses run their own mini-network inside with difference IP Address.