LO1

• What is the Internet?


  The Internet is a network of interconnected networks which is worldwide.
• What is a network?


  A network is a group of devices that can communicate between each other
• What are five characteristics linked with Internet connections

  Latency

  Bandwidth

  Range

  Strength

  Contention
• What is latency network?


  How long it takes to get a message
• Range of network definition


  How far away you can still use the network reliably
• Strength of a network


  How consistent the network is
• Meaning of bandwidth network


  How much data can be transferred across the network
• Contention


  How many devices can use the network at once?
• Wired methods of Internet connections


  Copper - cheap and common network cable

  Fibre optic - light, not electricity, higher, bandwidth, , lower latency, and greater range.
• Mobile data

  Cellular network

  strength varies, depending on location

  Lower latency and higher bandwidth using 5G
• Bluetooth versus Wi-Fi


  Wi-Fi has greater range , but both issues with contention
• Satellites


  Large range, but high latency
• Microwave


  Require line of sight so strength depends on that. HiGn bandwidth.
• Worldwide web


  A collection of resources which are connected through hyperlinks
• Internet is public with open access. This means anyone can request viewing a web source.
• An Internet is an internal private network. organisations may host an internal website on the Internet so that only employees can access it.
• An extent is an internal private network, but that partially allows access to those outside of it
• Advantages of blogs


  share information in different formats

  unite people with similar interests
• Disadvantages of blogs


  Takes a lot of effort and time to create

  Must be updated regularly

  difficult to build a customer base

  posts must be engaging and correct
• Advantages of podcasts

  Listen to when convenient

  can be edited and uploaded at certain times
• Disadvantages of podcasts


  Takes time to record and edit to remove mistakes

  Hard to build an audience
• Advantages of streamed audio and video

  Users can watch as soon as connection starts

  harder for users to share illegally and netflix uses privacy protection
• Static web page

  Content is pre-built and remains the same each time the page is loaded
• Dynamic web page

  Generated when they are loaded and can appear different to different users
• Blogs

  Used to share information with like-minded individuals
• Podcasts

  Downloadable audio files on a certain topic that can be listened to when convenient for the user
• Streaming

  The process of receiving video/audio data in a continuous flow, allowing the user to access the video/audio immediately
• Social media channels

  Provide a huge amount of data on users in an informal space, allowing organisations to receive feedback through user posts and comments
• Emails

  Can be used to provide information to a large amount of people almost instantly
• Document stores

  Allow users to store online files in cloud storage
• RSS feeds

  Allow users to subscribe to updates from their favourite websites
• What is a honey pot?

  A honeypot server is a system that acts as a decoy to lure adversaries/hackers and presents itself as a perfectly valid, potentially vulnerable server to entice people to attack it. these servers appear as part of the network, but they're typically isolated and monitored to prevent any harm to the system.