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200-901 · Question #565
200-901 Question #565: Real Exam Question with Answer & Explanation
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Software Development and Design
Question
A developer has created a three-tier web application for network device control and management. The application consists of multiple objects assigned for different functionalities. The architecture of the application is based on the Observer pattern. Which advantage does this pattern provide for the application design and architecture?
Options
- AIndependent observers are updated automatically.
- BIt updates the state of dependent subjects directly.
- COne observer can query the state of other subjects
- DIt decouples the subjects from the observers.
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Topics
#Observer pattern#Design patterns#Software architecture#Decoupling