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1.3 Computer networks, connections and protocols, Wireless, Wired - Coggle…

- - - - LAN Hardware
        
        Transmission media
        
        Wireless
        
        Slower than wired, can be used anywhere in a certain range, less interference, easier to set up, harder for unauthorised users to intercept data, easier to add new nodes
        
        Wired
        
        Ethernet
        
        Up to 40Gb/s
        
        Fibre optic
        
        Uses light and can go up to over 40Tb/s
        
        Copper cable
        
        Up to 10 Gb/s
        
        Faster than wireless, can only be used in one place, less interference, harder to set up, harder for unauthorised users to intercept data
        
        WAP
        
        This stands for "Wireless Access Point" and is a device that allows devices to wirelessly connect to a LAN network via a WiFi signal.
        
        Router
        
        A specialized computer that forwards data packets in between computer networks. They can be used to connect to the internet
        
        Switch
        
        A switch sends the data packets only to the specific node that they are meant to
        
        NIC
        
        Stands for "Network Interface Controller/Card" and is a piece of hardware that is installed in a computer so that it can be connected to a network. They are usually built in on most modern motherboards
      - Means "Local Area Network" and is a network that covers a small geographical area such as a single office building, a school or a home.
    - - Means "Wide Area Network" and is a network that covers a large geographical area. It is typically made of lots of LANs that are connected together. The internet is an example of a WAN.
      - Nudes
  - - - The amount of data that can transfer through a communications channel over a given period of time
    - - If there are more users on a network this means that more bandwidth is being used so the network performance will be lower
    - - Some things such as plain text do not use as much data to be transmitted however video on the other hand uses lots of data to be transmitted so the performance will be lower
    - - Latency is how long it takes for a message to get from one device to another in a network
    - - Sometimes when devices try and communicate with one another at the same time their signals collide and the transmission fails
- - - - The Hypertext Transfer Protocol is