Networks

Networks

1. Types of Networks

   • LAN
     • Local Area Network
   • WAN
     • Wide Area Network
     • Wide spread network, usually multiple LANs connected
   • Network in a single area

2. Disadvantages

   • Expensive
   • More room for error
   • Difficult
   • Malware can spread through network

3. Advantages

   • Share files
   • Share resources
   • Share logins

4. Topologies

   • Star
     • Advantages
       • Fast
       • Easy
       • Low chance of collision
     • Disadvantages
       • Expensive
       • Failure of switch takes down network
   • Ring
     • In the shape of a ring
     • Advantages
       • Cheap
       • No collision
     • Disadvantages
       • High chance of catastrophic failure
       • Difficult to expand
   • Bus
     • Advantages
       • Cheap
     • Disadvantages
       • High chance of catastrophic failure
       • High collision chance
       • Slow

5. IP Addresses

   • A unique value assigned to every computer on a network
   • Messages on a network have an IP attached
     • This is how a computer knows whether to keep a message or not.
   • There are only about 4 billion unique adresses, which is more than how many devices there are.
     • This is why we use an external and internal IP address
     • Unique addresses are assigned to businesses and house, which run their own mini network.