Networks

Networks

1. Different Types Of Network

   • LAN
     • Local Area Network
   • WAN
     • Wide Area Network

2. Disadvantages

   • Expensive
   • More Room For Error
   • Different
   • Malware
     • Software that does malicious things e.g: virus

3. Advantages

   • Share Files
   • Share Logins
   • Share Resources

4. Topologies

   • Star Topology
     • Fast
     • Low Chance Of Failure
     • No Collisions
     • Expensive
     • Depends On A Switch
   • Ring Topology
     • Slow
     • Catastrophic Failure
     • Easy To Set Up
     • Cheap
     • No Collision
   • Bus Topology
     • Cheap
     • Easy To Set Up
     • Slow
     • Catasrophic Failure
     • Data collision
   • Mesh Topology
     • Can choose the fastest route
     • Expensive
     • Resilient
     • Difficult to install

5. IP Address

   • A unique value assigned to every computer on a network, used to identify it.
   • Messages on networks have IP Addresses attached which is how computers know whether to keep the message or not.
   • The internet is a huge network with more devices than possible to sign a unique address to.
   • Unique addresses are assigned to businesses and houses.
   • These houses and businesses run their own mini-network inside with different IP Addresses

6. Packets

   • Where all the data on the internet is split up in to lots of small chunks
   • Each packet is numbered and sent independently
   • Each packet could take a completely different route through the mesh even if they are the same piece of data
   • They are reassembled on the other side