August
1999 QUESTION 5 Total Marks: 20 Marks |
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questions
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| (a) | The Internet has seen explosive growth, but
the vast majority of the world's population does not yet have access to it. Apart from the
availability of power supplies and phone lines, what are seen as the two main obstacles
blocking the general public out of full use of the Information Highway?
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[4] |
| (b) | In designing better networks, asymmetric
technologies are being studied carefully. What does this mean, and why are they suitable
for the average user?
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[4] |
| (c) | Satellites can be used to deliver Internet
connectivity directly to end users. (i) Does this eliminate the need to an analog phone line and modem? Explain. (ii) Describe the drawbacks of using satellites in this way.
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[4] [4] |
| (d) | What is the difference between a 'cable modem'
and a conventional modem?
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[4] |