ITPEC FE Morning October 2018 Question 47

Communicational Strength (Module Cohesion) — module containing multiple sequential functions with internal data passing.

Module cohesion levels (weakest → strongest):

• •Coincidental — unrelated functions grouped arbitrarily
• •Logical — related by category, selected via parameter
• •Temporal — executed at the same time (e.g., initialization)
• •Procedural — sequential execution, order matters, but no data dependency between functions
• •Communicational — sequential functions that share or pass data internally
• •Informational — multiple independent entry points operating on shared data structure
• •Functional — single, well-defined function (ideal)

Key distinction:
- Procedural — order matters, no data passing between functions
- Communicational — order matters + data passing between functions
- Functional — only one function per module

Why not others:
- (b) Functional — single function only, not multiple
- (c) Informational — multiple independent entry points, not a sequential pipeline
- (d) Procedural — sequential but without internal data passing

Mnemonic: Communicational = Connected by data — functions talk to each other through shared data.

AI-generated — may contain errors