Here we present a quiz consisting of 15+ multiple-choice questions (MCQs) to test your knowledge of REST API concepts. Each question is followed by the correct answer and a detailed explanation.
1. What does REST stand for?
Answer:
Explanation:
REST is an architectural style for distributed systems and stands for Representational State Transfer.
2. Which of these HTTP methods is typically used to retrieve a resource in a RESTful API?
Answer:
Explanation:
The HTTP GET method is used to retrieve (or read) a representation of a resource.
3. In REST, what does the term "stateless" mean?
Answer:
Explanation:
In stateless communication, each pair of requests and responses is treated as an isolated transaction with no retained context.
4. What status code indicates that a resource has been successfully created?
Answer:
Explanation:
The HTTP 201 status code implies that the request was successful and resulted in the creation of a resource.
5. Which status code denotes that a request is valid, but the server cannot process it due to client-side issues?
Answer:
Explanation:
A 400 Bad Request status code indicates that the server cannot or will not process the request due to something perceived as a client error.
6. Which HTTP method is used to partially update the resource
Answer:
Explanation:
The PATCH method is used to update the existing resource partially.
7. If you want to remove a resource via a RESTful API, which HTTP method would you employ?
Answer:
Explanation:
The DELETE method deletes the specified resource.
8. In REST, what does "Uniform Interface" imply?
Answer:
Explanation:
The uniform interface simplifies and decouples the architecture, enabling each part to evolve independently.
9. In REST, which method is idempotent and safe?
Answer:
Explanation:
An idempotent HTTP method has the same effect no matter how many times it's repeated. 'Safe' methods don't change the server's state. GET doesn't change data and produces the same result when called multiple times.
10. Which format is typically used for transmitting data in a RESTful API?
Answer:
Explanation:
While RESTful APIs can use different formats, JSON (JavaScript Object Notation) is the most common due to its simplicity and lightweight nature.
11. Which of these is not a constraint of REST?
Answer:
Explanation:
REST doesn't enforce any specific database or storage mechanism.
12. What format can RESTful APIs use for sending and fetching data?
Answer:
Explanation:
RESTful services can return data in various formats, with JSON and XML being the most popular.
13. Which architectural style does RESTful API follow?
Answer:
Explanation:
REST is based on the Client-Server architectural style, where the server stores information and the client interfaces with it.
14. Which HTTP status code indicates that a resource was not found?
Answer:
Explanation:
A 404 status code is returned when the requested resource is not available or not found.
15. What is the primary purpose of a URI in a RESTful API?
Answer:
Explanation:
URI (Uniform Resource Identifier) is used to uniquely identify a specific resource.
16. Which HTTP status code indicates a redirection?
Answer:
Explanation:
A 302 status code indicates that the requested URL has been temporarily moved to another location.
17. What should be the primary concern when designing a RESTful API?
Answer:
Explanation:
While all options are essential, REST is centered around resources and how they're represented.
18. What does the concept of "statelessness" in REST mean?
Answer:
Explanation:
In REST, each request from a client contains all the information needed by the server to fulfill that request, making the server stateless.
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