Connectivity

Connectivity

1. Deep Sea Internet Cables

   • connected on land and under the ocean
   • Optical Fibres
     • Modern cables use optical fiber technology to carry digital data
   • Different colours show direction of flow
   • Good website to look into
     • http://www.submarinecablemap.com/#/

2. The most connected places are America and Europe , America and China

3. Bandwidth

   • The amount of data that can be carried at a time
   • Maximum rate of data transfer across a given path
     • Network Bandwidth
       • Data transfer capacity of a network
     • Data Bandwidth
       • Maximum data transfer rate of a network or internet connection
         • measures how much data can be sent over a specific connection in a given amount of time
     • Digital Bandwidth
       • number of pulses per second measured in bits per second (bps)
   • https://encyclopedia2.thefreedictionary.com/Digital+bandwidth
     • Good website to look into for extra info

4. Connection speed

   • The speed that data is transferred between your device and the internet
     • Download speed
       • Rate at which data is transferred from the internet to the user's computer
         • measured in megabytes per second(mbps)
       • More people download instead of uploading so downloading rate is quicker
     • Receiving speed
       • how quickly you can upload data

5. Medium

   • physical transmission medium
     • such as optical fibers
     • Presentation medium
       • Such as multimedia and advertising media
   • Storage medium
     • any technology including devices and materials and used to place,keep and retrieve electronic data

6. wireless connection

   • Advantages
     • easy to set up
     • cheap to buy
     • Mobility
     • link up devices
     • you can access it wherever you are
   • Disadvantages
     • Bandwidth
       • slow 54 mbps
     • poor security
     • lots of interference
       • walls/furniture

7. Buffer

   • an area of memory used for the temporary storage of data when a program or hardware device needs an uninterrupted flow of information

8. Ethernet cable

   • Ethernet networking standard uses twisted pair copper cabling or fiber optics

9. Fiber optic cables

   • Data travels through these at a speed of 299 792 458 m/s which is the speed of light
   • Expensive due to microscopic size
   • Copper cables
     • a lot of interference
     • cheap
     • can be used as average speed of broadband

10. The history of connectivity

    • the first cable was 2,500 miles long and was laid across the Atlantic in 1858 after many difficulties including storms and cable breakages
      • For each mile of cable 133 miles of copper and iron wire was needed
        • total weight was 1 ton per mile

11. broadband

    • high speed connection to the internet that has superseded the use of dial-up connection
    • fiber optic glass thread is used in modern cables,with up to 1,000 glass fibers in a single cable