Networks

Networks

1. Types Of Networks

   • LAN stands for Local Area Network
   • WAN stands for Wide Area Network

2. Advantadges

   • You can access your files from anywhere
   • You can use your resources from anywhere
   • You have consistent user experience

3. Disadvantadges

   • Expensive-extra hardwire and wiring needed
   • More room for error-if one thing goes wrong it affects all of the computers
   • Difficult to wire

4. Topologies

   • Bus is a type of network where computers are connected to a single wire.
     • Disadvantages can be: high chance of catastrophic failure and high chance of collisions. Advantages can be: it is cheap to set up.
   • Ring is a type of network where all the computers are connected by a loop
     • Disadvantages can be: high chance for catastrophic failure and it is difficult to expand. Advantages can be: it is cheap to install and there are no collisions
   • Star is a type of network where all the computers are connected to a central switch
     • Disadvantages can be: it is expensive and if the switch fails the whole network can collapse. Advantages can be: it is fast, there is low chance of catastrophic failure and it is easy to add another computer
   • Network addressing
     • An address is is a unique identifier given to something
     • IP address
       • It is a 32-bit binary value
       • Unique addresses are assigned to businesses and houses-External IP address
       • IP address stands for Internet Protocol address
       • An internal IP address is assigned to each device and these are not unique
     • The internet is a huge network with more devices than it is possible to assign a unique IP address to