August
1999 QUESTION 3 Total Marks: 20 Marks |
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| (a) | Name and briefly explain any three services
provided by telecommunications service providers.
|
[6] |
| (b) | Typically a bridge connects LANs of similar
architecture. Can a bridge connect networks of different architecture? Explain your
answer.
|
[4] |
| (c) | Give three reasons for breaking up a LAN into
smaller interconnected LANs. Provide explanations for your reasons.
|
[6] |
| (d) | At which OSI layer(s) does the router operate?
What types of issues are handled by the router?
|
[4] |