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Q. What problems arise if two modules have high coupling?
Ans: Coupling signifies the interconnection of different modules with each other or we can say it tells about the interrelationship of different modules of a system. A system with high coupling denotes there are strong interconnections between its modules. If two modules are engaged in high coupling it means their interdependence will be very high. Whichever changes applied to one module will affect the functionality of the other module. Greater the degree of change signifies the greater will be its effect on the other. Since the dependence is higher such change will affect modules in a negative manner and in-turn the maintainability of the project is reduced. This will further decrease the reusability factor of individual modules and hence lead to unsophisticated software. Therefore it is always desirable to have inter-connection & interdependence between modules.
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