ICT

Module 4

Revision

ICTAttenuation and cable type

• What is attenuation

• What cable should be used between buildings and why?

ICTAttenuation• What are common causes for attenuation

in copper cables?

• How can you limit attenuation on a cable run?

ICTCross Talk

• What can cause cross talk in copper cables?

• What should be done to ensure cross talk does not occur?

ICTWaves

• What is meant by “the frequency” of a wave?

• What is meant by “the amplitude” of a wave?

• What is meant by the period of a wave?

ICTFibre optic signalling

• How is data represented when it is sent down a fibre optic cable (two possible answers)?

ICTWire map test

• What problems can be detected when using a wire map test on a copper cable?

ICTNoise and cross talk

• What are the causes of noise and cross talk?