Networks

Networks

1. Advantages

   • Share files
   • Share resources
   • Share logins
   • Easy access
   • Everyone can access
   • Share with colleagues
   • Easy to set up if you know what your doing

2. Disadvantages

   • Cost
   • Increase risk
   • Difficulty
   • Transfer viruses
   • Need expertise to set up
   • Have to maintain it
   • Can have problems

3. Network types

   • LAN
     • Local area network
     • Single location/organisation
   • WAN
     • Wide area network
     • Large/multipule organisations

4. Bus

   • Disadvantages
     • A break in the central cable takes down the entire network
     • More computers means more collisions
     • Gets slower as it gets bigger
     • They can corrupt each other
     • Multiple communications on the same cable
   • Advantages
     • Cheap to install
     • Only one cable needed

5. Ring

   • Disadvantages
     • One cable breaks, network fails
     • Difficult to expand
     • High chance of catastrophic failure
   • Advantages
     • Cheap to install
     • One cable per computer needed
     • No collisions

6. Star

   • Advantages
     • Fast
     • Low chance of collision
     • Low chance of failure
   • Disdvantages
     • Expensive
     • Depends on a switch

7. IP Addresses

   • Internet protocol address
   • Unique value
   • Assigned to businesses and houses
   • They run on a mini-network

8. Mesh topology

   • The internet is a giant mesh of computer
   • Multiple different routes
   • The internet is impossible to break
   • Each route has a cost
   • Route finding algorithms are used to find the lowest cost route