Question

a software tester receives the following graphic. life cycle phases % of total development faults key design faults logic faults syntax faults introduced observed requirements & functional design (phase 1) technical & program design (phase 2) construction & system test (phase 3) acceptance testing & operations (phase 4) during which phase were no faults introduced? phase 1 phase 4 phase 2 phase 3

Explanation:

Examine the bar - chart for the 'I' (introduced) category. In Phase 4 (Acceptance Testing & Operations), there are no bars for 'I' indicating no faults were introduced. In Phase 1, there are design faults introduced, in Phase 2, there are logic and design faults introduced, and in Phase 3, there are syntax, logic, and design faults introduced.

Answer:

Phase 4