PCPP2 Design Patterns Practice Question
You are utilizing the Mediator pattern to reduce coupling between components. Which of the following describes the role of the Mediator?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It acts as a central hub that coordinates interactions between components
The Mediator centralizes communication between components, so they don't need to refer to each other directly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It allows components to communicate directly with each other
Why it's wrong here
The mediator prevents direct communication.
- ✗
It enforces that components are implemented as Singletons
Why it's wrong here
It has no such requirement.
- ✓
It acts as a central hub that coordinates interactions between components
Why this is correct
This is the primary duty of the mediator.
- ✗
It is responsible for data storage for all components
Why it's wrong here
The mediator handles flow, not persistent storage.
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Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP2 practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCPP2 exam.