Which of the following are required attributes of a REST-based API? (Choose two answers.)
- Uses HTTP
- Objects noted as to whether they can be cached
- Classful operation
- Client/server architecture
Explanation: The six primary required features of REST-based APIs include three features mentioned in the answers: a client/server architecture, stateless operation, notation of whether each object is cacheable. Two items from these three REST attributes are the correct answers. Of the incorrect answers, classful operation is the opposite of the REST-based API feature of classless operation. For the other incorrect answer, although many REST-based APIs happen to use HTTP, REST APIs do not have to use HTTP.
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