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QUESTION 1
(a) Draw a use-case model for the above system. You must identify all possible actors and use-cases.
(b)
(c) Explain the difference between a structured methodology for developing software and the object-oriented approach. Use examples to illustrate your answer.
QUESTION 2
(a) Build a class model for the above system. You must identify all possible classes, their relationships, relationship multiplicities, two attributes and two methods for each class.
(b) Explain the difference between a link and an association. Use a simple example to illustrate your answer.
(c) Briefly explain the terms ‘cohesion' and ‘coupling'.
(d) What are the main factors which contribute to software complexity?
QUESTION 3
(a) Draw a Sequence Diagram for the process of assigning a driver to a particular bus going on a special route. Show clearly the objects involved and the flow of messages.
(b) What is a state diagram? Use an example from the case study to illustrate your answer.
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State how the different IP-QoS needs for controling traffic, data and voice applications can be supported in your technology choice from Q7. Describe the specific IP-QoS schemes -
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What is the Asset of using Static default routes?
How two adjacent layers communicate in a layered network? (or What do you mean by Service Access Point?) In layered network, each layer has lots of entities and entities of lay
Can you define CHAP?
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