OUESTION $4$

a$)$ A small company has developed a specialized product that it configures specially for each customer. New customers usually have specific requirements to be incorporated into their system, and they pay for these to be developed. The company has an opportunity to bid for a new contract, which would more than double its customer base. The new customer also wishes to have some involvement in the configuration of the system. Explain why, in these circumstances, it might be a good idea for the company owning the software to make it open source.

$[20]$

OUESTION $5$

a$)$ Using the architecture of a house or building as a metaphor, draw comparisons with software architecture. How are the disciplines of classical architecture and the software architecture similar? How do they differ?

$10$

b$)$ The terms architectural style, architectural pattern, and framework are often encountered in discussions of software architecfyre. Make brief notes about these terms and describe how each of these terms differs from each other.

$[10]$