December 1999
AN215 : ADVANCED NETWORKING

QUESTION 4

Total Marks: 15 Marks

Click here to access other questions

Click to access
SUGGESTED SOLUTIONS
for Question 4

(a)

Give two advantages of using coaxial cables rather than twisted pair.

[2]
(b)

Besides noise,there is another transmission impairment,called attenuation .Explain what this is,why it is a problem,and how it may be overcome.

[4]
(c)

In contention-based systems two hosts may broadcast messages simultaneously, which overlap with each other.The result will be loss of data in both messages.Is this a fault?Explain how the hosts recover from this situation.

[4]
(d) Explain the main problem associated with parallel transmission.Why is this is not a problem in serial transmission?

 [5]