120 BA Fundamentals Interview Questions — SDLC, Use Cases, BPMN 2025

Question 1

What is SDLC and what are its phases?

Accepted Answer

SDLC (Software Development Life Cycle) is the structured process for planning, creating, testing and delivering software — covering phases: Requirements, Design, Development, Testing, Deployment and Maintenance.

Question 2

What is a use case and how does a BA create one?

Accepted Answer

A use case describes interactions between actors and the system to achieve a goal. It includes actor, precondition, main flow, alternate flows, exception flows and postcondition. BAs use use cases in regulated industries requiring detailed traceability.