Connectivity

Connectivity

1. How are messages sent around the world on the internet in a fraction of a second?

   • Deep Sea Cables
   • Undersea Internet Cables

2. Fibre Optics

   • Fibre optic cabling is made from glass that becomes very flexible when it is thin.
     • Light is passed through the cable using a transmitter.
       • Light travels quickly through the light-reflecting internal wall of the cable.
   • Advantages
     • The individual cables are thinner, so larger quantities of cable can be joined together compared to copper there is less interference than copper there is less chance for degeneration.
     • There is less interference than copper
     • There is less chance for degeneration
   • Disadvantages
     • The UK telephone network still has areas that use copper cable.
     • Replacing copper with fibre optic cabling is expensive

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