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1.4a intro to networks : (A node (laptops (scanners (phones (printers))),…

- - - - when you connect computers together, one of the biggest advantages is that you can share all your resources with the whole network
        
        two or more resources connected together.
- - - - The LAN covers our entire school.
        
        It can be wireless or have cables
        
        The organisation who own LAN, owns all the hard wear for it
        
        In one geographical area, it can be a room or the whole building
  - - - you can share resources. Such as files, printers or scanners. The files can connect to any node in the network.
        
        Authenticated successful will mean we get access the files. If its not, we don't get access to the network
        
        When we type our usernames and password, facial recognition, finger prints, vitrifaction codes, that's authentication.
- - - - You can move the data around to any device and access it so you don't lose it.
        
        Can log on from any device because you authenticated it.
- - - - phones
        
        printers
        
        tablets
        
        servers
- - - - People connect LAN's together to share files with another house or the village or whatever.
        
        Internet- interconnected network.
        The internet is a wide area network
  - - - setting up needs a way of connection the different LAN's over a wide distance.
        
        Fiber optic, leased line, satellite communication and microwave. everyone is expensive
        
        you could also need to pay technical staff to set this connection up and maintain it
        
        Another disadvantage of WAN is Network failure
        
        if a LAN network fails, they can fix it because hey own all the software. If a WAN fails they just have to trust that the person who owns it will fix it when they get to it.
  - - - The main one is that people within the organisation - which is likely to be spread out across towns and cities and even countries - they can share resources (such as files) in ways that they previously.
        
        Example- If you wanted to share large and high quality files of image then you have to attach them to an email. Emails have limitations to them. They take a while to send and get files. When you send an email to someone it can take additional time. If both places are connected by a WAN then you could drop the files onto a shared network/ area (using a file server). Other people from across the world could then have access immediately