CSI CSI Testing & Quality Assurance

Question 1

Which testing phase validates that integrated systems exchange data correctly and meet business requirements before go-live?

Accepted Answer

User Acceptance Testing (UAT)

Answer

UAT is the final validation phase where end-users confirm that integrated systems meet business requirements before production deployment.

Question 2

A system integrator must verify that two enterprise applications exchange messages without data loss. Which testing approach is most appropriate?

Accepted Answer

End-to-end integration testing

Answer

End-to-end integration testing validates complete message flows across system boundaries to ensure no data is lost in transit.

Question 3

What is a 'test harness' in the context of system integration testing?

Accepted Answer

A collection of stubs and drivers that simulate system components

Answer

A test harness is a framework of stubs and drivers used to simulate missing or unavailable components during integration testing.

Question 4

During integration testing, a 'stub' is used to:

Accepted Answer

Simulate a downstream component that is not yet available

Answer

A stub simulates a downstream dependency, returning predetermined responses so the component under test can be validated independently.

Question 5

Which defect classification indicates a critical system integration failure that blocks all further testing?

Accepted Answer

Blocker/Showstopper

Answer

A blocker or showstopper defect halts the entire testing effort because the core integration path cannot function until it is resolved.

(CSI) Certified System Integrator Practice Test