Which of the following statements is true?

Question

Options

• AFor a service consumer to interact with a service it must comply to the requirements of the service
• BThe service contract is used to express meta data about a service for human consumption only, and
• CService contracts are only used to access a service when the service consumer itself is not a service.
• DAll of these statements are true.

• A
  94% (48)
• B
  2% (1)
• C
  2% (1)
• D
  2% (1)

Explanation

Option A is correct because a fundamental principle of service-oriented architecture is that any consumer wishing to use a service must adhere to the terms defined by that service - including its interface, protocols, and constraints. The service sets the rules; the consumer must conform to them, not the other way around.

Why the distractors fail:

• B is wrong because service contracts serve both human and machine consumption - they are used programmatically by service consumers to understand how to interact with a service, not just as human-readable documentation.
• C is wrong because service contracts govern access for all consumers, regardless of whether the consumer is itself a service or a non-service application. The contract applies universally.
• D is wrong because only A is true; since B and C contain false claims, "all of these" cannot be correct.

Memory tip: Think of a service contract like a legal contract - both parties must follow its terms, it's referenced throughout the relationship (not just at signing), and it applies to everyone who enters the agreement, human or automated.

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