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Module 3: Software Design & Metrics

20202m

Cyclomatic complexity method comes under which testing method?

(i) Yellow box
(ii) White box
(iii) Grey box
(iv) Black box

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Solution

Correct Answer: (ii) White box

Explanation

Cyclomatic Complexity V(G)=E−N+2PV(G) = E - N + 2P (McCabe, 1976) measures number of linearly independent paths.

  • It requires source code / control flow graph → hence White-box / Structural / Glass-box testing.
  • Used for basis path testing, to determine number of test cases.

Other categories:

  • Black box - without code knowledge (BVA, Equivalence Partitioning)
  • Grey box - partial knowledge
  • Yellow box is not a standard term (distractor).

Answer: (ii) White box (also called Glass box / Structural testing)

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