August
1997 QUESTION 2 Total Marks: 20 Marks |
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| 2. | Besides simple cable connections, two local area networks (LANs) may be connected by a bridge, a router or a gateway. The choice of which form of connection to use will depend on the nature of the two networks involved. | ||
| (a) For each of these four, state at which level(s) in the OSI model it operates, giving reasons for your answers. | [8] | ||
| (b) A bridge may be used to subdivide a LAN into several interconnected LANs. Explain three reasons for using a bridge in this way. | [6] | ||
| (c) For each of the following situations, state which means of connection would be most appropriate, and why. | |||
| (i) The connection between a training organisation's main (backbone) ethernet network, and the local network used in a particular computer laboratory/classroom. | [2] | ||
| (ii) The connection between a company's private network and the Internet. | [2] | ||
| (iii) The connection between the same backbone and a special proprietary network used in the headquarters' accounts department. | [2] | ||