200-901 · Question #347
200-901 Question #347: Real Exam Question with Answer & Explanation
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Question
A developer creates a program in which an object maintains a list of classes based on the observer pattern. The classes are dependent on the object. Whenever the state of the object changes, it notifies the dependent classes directly through callbacks. Which advantage of the observer pattern offers minimum dependencies and maximum flexibility between dependent objects or classes?
Options
- Atight coupling
- Bcohesion
- Cmediation
- Dloose coupling
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