Which of the following statements is false?

Question

Options

• AThe Contract Centralization pattern positions the service contract as the official entry point into the
• BThe Contract Centralization pattern can impose performance overhead and requires the use of
• CThe application of the Contract Centralization pattern enables access to underlying service
• DThe Decoupled Contract pattern supports the application of the Contract Centralization pattern.

• A
  8% (5)
• B
  5% (3)
• C
  72% (47)
• D
  15% (10)

Explanation

Option C is false because Contract Centralization is specifically designed to restrict direct access to underlying service logic by routing all consumer interactions through a centralized contract (e.g., an API gateway or ESB) - it conceals, not enables, direct access to underlying capabilities.

• A is true: The pattern's core purpose is exactly this - the service contract becomes the single, official entry point, abstracting consumers from the backend.
• B is true: Routing all traffic through a centralized layer inherently adds latency and typically requires infrastructure like an ESB or intermediary broker.
• D is true: The Decoupled Contract pattern separates the contract from the service implementation, which is a prerequisite for effective centralization - you can't centralize what is tightly coupled to its implementation.

Memory tip: Think of Contract Centralization like a hotel front desk - guests (consumers) interact only with the desk (centralized contract), never wandering directly into back-office operations (underlying services). Option C falsely implies the guests get a backstage pass.

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