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Module 3: Software Design & Metrics

20202m

______ is a measure of the degree of interdependence between modules.

(i) Cohesion
(ii) Coupling
(iii) None of the above
(iv) All of the above

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Solution

Correct Answer: (ii) Coupling

Explanation

  • Coupling = Measure of interdependence between modules. Low coupling is desired (modules independent, change in one less likely to affect other). Types: Data, Stamp, Control, External, Common, Content (worst).
  • Cohesion = Measure of intra-dependence / how strongly elements within a single module belong together. High cohesion is desired. Types: Functional (best) → Sequential → Communicational → Procedural → Temporal → Logical → Coincidental (worst).

Answer: (ii) Coupling

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