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Previous Year Question (PYQs)

Arrange the following in the increasing order of coupling from lowest coupling to highest coupling.

A. Common Coupling
B. Stamp Coupling
C. Control Coupling
D. External Coupling
E. Content Coupling

Choose the correct answer from the options given below:





Solution

Increasing coupling (lower → higher):

  • Stamp coupling (B): modules share a composite data structure but use only parts of it.

  • Control coupling (C): one module controls another via flags/controls.

  • External coupling (D): modules depend on externally imposed formats/protocols/devices.

  • Common coupling (A): modules share global data.

  • Content coupling (E): one module relies on or modifies another’s internal logic (worst).


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