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What does the HttpClient return by default?

  1. A A Promise
  2. B A cold Observable that emits once and completes
  3. C An array
  4. D A Subject
Answer

A cold Observable that emits once and completes

Because it is cold, no request is sent until something subscribes. It completes after one emission, so explicit unsubscription is not strictly required.

All Angular MCQs

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