a) Conventional telephone calls are made using the public service telephone network (PSTN). The national network uses both copper cables and fibre optic cables.
i) Explain the difference between copper cabling and fibre optic cabling
ii) Describe two benefits and two drawbacks of both types of cabling.
b) Satellite technology is often used in long distance communications.
Compare the differences between GEO, MEO and LEO satellites.
c) Some telephones use Bluetooth to connect to the telephone network. Explain what is meant by:
i) The attenuation of a signal
ii) Spread spectrum frequency hopping.