Top 3 Non functional requirements Interview Questions

Browse 3 real-world technical and behavioral interview questions about Non functional requirements. Review scenarios, edge cases, and architectural best practices.

What goes in a BRD versus an FRD versus a user story, and how do you decide which to produce?

A BRD explains the business objective and sponsor decision, an FRD describes required system behavior, and a user story is a small testable slice with acceptance criteria. Choose the artifact by audience, governance need and delivery granularity.

mediumconcept

The business insists on a requirement that nobody can test — "the system must be intuitive". What do you write instead?

Convert the adjective into an observable: who is doing what task, under which conditions, and what result counts as a pass. Where no honest measure exists, record it as a design constraint with a named reviewer rather than leaving an unverifiable sentence in a document somebody signs.

mediumconcept

A stakeholder tells you the system must be scalable. How do you turn that into a requirement you can design and test against?

Rewrite it as a quality-attribute scenario: a named stimulus arriving at a stated rate, hitting a stated system state, with a response measured at a percentile over a defined window. A number with a load figure, a duration and a named sacrifice is designable and testable; a list of maxima is not.

harddesign