Networks

Networks

1. Disadvantages

   • Expensive to run.
     • $$$$$
   • Increased risk of viruses/hacked
     • When you get into one you have got all of them
   • Difficult and takes time
     • More time to load stuff.

2. Advantages

   • You can share files
     • Helps with group projects
   • Share rescoures so its less expensive
     • Stuff like photoshop .ect
   • Share your logins
     • More simple

3. Types of networks

   • WAN- Wide area network
     • Spreads across a large area like xbox live
   • LAN- Local area network
     • A span of a small area
   • Wi-fi

4. Topologies

   • Ring
     • Computers are connected in a ring and communication goes in one direction.
       • Advantages
         • Cheap and no collision.
       • Disadvantages
         • High chance of failiure
         • Hard to add computers
   • Bus
     • It consists of a single cable that runs through the network
       • Disadvantages
         • High chance of failiur lots of collisions
       • Advantages
         • Its cheap
   • Star
     • All computers are connected to a switch
       • Advantages
         • Low chance of failiure and no collisions
       • Disadvantages
         • Expensive and depends on switch

5. IP Addresses

   • What is it for?
     • Messages have an IP Address
     • That's for computers to see if they keep the message or not
   • How many IP Addresses are there?
     • 4,228,250,625
   • what does one look like?
     • It look like a combination of numbers seperated by dots
   • Definition
     • IP addresses are unique values assigned to every device on a network, used to identify it.

6. Internet

   • A mesh topology
     • Each node is connected to 2 or more route it can't break
   • Routes algorithathem chose the cheapest and quickest ways to spread messages, files
   • They get split up into to chunks and then reassemble