QUFSTION$1$

a$)$ Discuss the FOUR important atributes that all professional software should have? Suggest any four other attributes that may sometimes be significant.

$|12|$

b$)$ A waterfall model is one of the generic software process models, from your knowledge about this model evaluate its applicability over other Software Process models you know.

$181$

QUESTION $2$

a$)$ Apart from the challenges of heterogeneity, business and social change and trust and security, identify other problems and challenges that software engineering is likely to face in the $21$ st century $($hint: think about the environment$)$

$10$

b$)$ Based on your knowledge of some of the application types, explain, with examples, why different application types require specialized software engineering techniques to support their design and development

$2020$

$|10|$

QUESTION $3$

a$)$ Discover ambiguities or omissions in the following statement of requirements for part of a ticket$-$issuing system:

An automared ticket$-$issuing system sells rail tickets. Users select their destination and input a credit card and a personal identification number. The rail ticket is issued, and their credit card account charged. When the user presses the start button, a memu display of potential destinations is activated, along with a message to the user to select a destination. Once a destination has been selected, users are requested to input their credit card. Its validity is checked, and the user is then requested to input a personal identifier. When the credit transaction has been validated, the ticket is issued

$10$

c$)$ Consider the reuse$-$based process model. Explain why it is essential to have two separate requirements engineering activities in the process. $2020$

$[10]$