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a.Briefly explain why amplifiers or repeaters are needed every 5 km for copper cable. b.Differentiate between amplifier and repeater. QUESTION 2 a. What is

a.Briefly explain why amplifiers or repeaters are needed every 5 km for copper cable. b.Differentiate between amplifier and repeater. QUESTION 2 a. What is contention method in Random Access Protocol? (2 marks) (3 marks) (1 mark) b.In order to avoid access conflict among station, each station follows a procedure to avoid or reduce that conflict. List the procedure in Random Access Protocol. (4 marks)

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