ITPEC IP October 2023 Question 49
ITPEC IP October 2023 — Question 49 of 100
Black-box testing evaluates a program through its inputs and observed outputs without relying on its internal implementation. Test cases are derived from specifications using techniques such as equivalence partitioning, boundary-value analysis, and decision tables. The tester checks whether externally visible behavior is correct.
Answer (d)
Why not others:
- (a) testing all branches is branch coverage, a white-box measure
- (b) executing all instructions is statement coverage, also a white-box measure
- (c) basing tests on internal program structure is the definition of white-box testing
Key rule: Black box tests specified behavior from outside; white box designs coverage from code structure.
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