August
1999 QUESTION 1 (Compulsory) Total Marks: 20 Marks |
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questions
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| (a) | What is the chief cause of attenuation in
terrestrial microwave?
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[1] |
| (b) | What is meant by a full-duplex transmission?
|
[2] |
| (c) | What is the main problem associated with
parallel transmission, which prevents its use over long distances. Explain your answer.
|
[2] |
| (d) | Give an advantage and a disadvantage of
parallel transmission.
|
[2] |
| (e) | What is unit of measurement for signaling
rate?
|
[1] |
| (f) | What is a repeater? At which later of the OSI
model does this device operate?
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[2] |
| (g) | What is meant by delay distortion?
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[2] |
| (h) | A particular connection uses 35-pin connector,
with the pins organized in three rows. It uses signal voltages which vary between +2V and
-2V. Could this be an RS-232C connection? Explain why/why not. What are the other features of the RS-232C specifications?
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[8] |