$3\mathrm{.}1$ What features of the waterfall life cycle model differentiate it from other

models? $[10]$

$3\mathrm{.}2$ Using your knowledge of how an ATM $($Automated Teller Machine$)$ works,

develop a set of five use cases and their actors that could serve as a basis for

understanding the requirements for an ATM system.$[20]$

$3\mathrm{.}3$ You are requested to develop Android and iOS mobile applications for the

Richfield Moodle learning platform. The goal of the project was to develop a

cutting$-$edge mobile application that would revolutionize the way students

interacted with their smartphones. The team leader $($You are a team of A

software developers$)$ decided to adopt the Rapid Application Development

methodology over the Spiral methodology you proposed for effectively managing

the inherent risks and uncertainties associated with the project. Justify using

examples why the decision of the team leader to adopt the Rapid Application

Development methodology is feasible$[20]$