a.) What is meant by the term scalable? What is its importance in architecture selection? b.) Distinguish between the two-tier and n-tier client-server architectures. (3marks) (4marks) c.) You have been asked to prepare and deliver a presentation to a non-technical manager to justify the need for explicitly designing and documenting software architecture. This is because the manager thought it was a waste of time. In your presentation discuss two reasons. Lame 18324 (4marks) d.) After presenting as stated in (c) above, the manager wanted to understand the uses of the architectural model. You were able to remember only two uses. Discuss (4marks) e.) Draw diagrams showing a conceptual view and a process view of the architectures of an automated ticket-issuing system used by passengers at a railway station. (5marks) A