Question

Which of these is correct with context to coupling?

(a) Failure to hide information leads to loose coupling and cannot be avoided

(b) Modules that communicate using special data types and structures are less tightly coupled than modules with simple values

(c) When modules communicate only through public module interface,  their coupling strength is proportional to the number of messages and number of data passed in between

(d) All of the mentioned

This question was addressed to me during an online exam.

Question is taken from Modularity Principles in section Unified Modelling Language of Software Architecture

Answer 1

The correct option is (c) When modules communicate only through public module interface,  their coupling strength is proportional to the number of messages and number of data passed in between

To explain I would say: Failure to hide information leads to tight coupling,  Modules with special data types are more tightly coupled.