HOME

Are you familiar with REST APIs and want to test your understanding? This post contains 25 useful REST API multiple-choice questions (quiz) to self-test your knowledge of REST API development.

1. What does API stand for in API testing?

Select the best answer

1. Application Programming Interface
2. Application Protocol Integration
3. Automated Program Interface
4. Automated Protocol Integration

Answer

2. Your API resource does no allow deletion, and a client application attempted to delete the resource. What HTTP response code should you return?

Choose one option

1. 409 Conflict
2. 400 Bad Request
3. 406 Not Acceptable
4. 405 Method Not Allowed

Answer

3. Which REST constraint specifies that knowledge and understanding obtained from one component of the API should be generally applicable elsewhere in the API?

Choose one option

1. Stateless
2. Uniform Interface
3. Cacheable
4. Client-Server

Answer

4. Which of the following HTTP Status code means FORBIDDEN, states that user is not having access to method being used for example, delete access without admin rights?

Choose one option

1. 403
2. 404
3. 406
4. 409

Answer

5.  The ability to invoke a RESTful method multiple times without changing the state of the server on subsequent invocations is known as:

Choose one option

1. Uniformity
2. Idempotence
3. Immutability
4. Statefulness

Answer

6. What is REST-assured?

1. a java library for testing Restful Web services
2. a java api
3. a resting place for API
4. None

Answer

7. Which one of the following is correct?

@Test
public void test() {
 
    given()
          .when()
          .get("http://dummy.restapiexample.com/api/v1/employee/2")
          .then()
          .statusCode(200).statusLine("HTTP/1.1 200 OK")
          .body("data.employee_name", equalTo("Garrett Winters"))
          .body("message", equalTo("Successfully! Record has been fetched."));
 }

Options

1. Response will return the details of all the employee
2. Response will return the details of a specific employee
3. Response will not return the status code
4. Response will return message as “Garrett John”

Answer

8. Which of the following is correct for POST?

Choose one option

  @Test
    public void test() {
 
        JSONObject data = new JSONObject();
 
        data.put("employee_name", "MapTest");
        data.put("profile_image", "test.png");
 
        RestAssured
                .given().contentType(ContentType.JSON).body(data.toString())
 
                .when().post("https://dummy.restapiexample.com/api/v1/create")
 
                .then().assertThat().statusCode(201)
                .body("data.employee_name", equalTo("MapTest"))
                .body("message", equalTo("Successfully! Record has been added."));
 
    }
}

@Test
public void test() {
 
   RestAssured
      .given().contentType(ContentType.JSON).body()
 
       .when().post("https://dummy.restapiexample.com/api/v1/create")
 
       .then().assertThat().statusCode(200)
       .body("data.employee_name", equalTo("MapTest"));
 
    }
}

@Test
public void test() {
 
    RestAssured
        .given().contentType(ContentType.JSON).body(data.toString())
 
        .when().post("https://dummy.restapiexample.com/api/v1/create")
 
         .then().assertThat().statusCode(200)
         .body("data.employee_name", equalTo("MapTest"));
 
    }
}

Answer

9. Which header should be configured to tell the server XML is preferred over JSON?

Choose one option

1. GET
2. Accept
3. User-Agent
4. Content-Type

Answer

10. Which of the following is correct about web services?

Choose one option

1. A web service is a collection of open protocols and standards used for exchanging data between applications or systems.
2. Software applications written in various programming languages and running on various platforms can use web services to exchange data among them over computer networks like the Internet.
3. Both (1) and (2)
4. None of the above

Answer

11. Which of the following annotation of JAX RS API is used to annotate a method used to create/update resource?

Choose one option

1. @PUT
2. @POST
3. @GET
4. @Path

Answer

12.  Which of the following annotation of JAX RS API assigns a default value to a parameter passed to method?

Choose one option

1. @Context
2. @DefaultValue
3. @FormParam
4. @CookieParam

Answer

13. Which of the following annotation of JAX RS API binds the parameter passed to method to a query parameter in path?

Choose one option

1. @QueryParam
2. @PathParam
3. @MatrixParam
4. @HeaderParam

Answer

14. Which of the below HTTP Status codes denotes NO CONTENT, such as a DELETE request or a response with no body?

Choose one option

1. 200
2. 201
3. 204
4. 304

Answer

15. Which tool can be used for automating REST API tests?

Choose one option

1. Postman
2. Selenium
3. Jenkins
4. Eclipse

Answer

16.  How can you handle authentication while testing secured APIs using Postman?

Choose one option

1. By passing credentials as part of request headers or body
2. By disabling authentication during testing
3. By hardcoding credentials directly into test scripts
4. Authentication is not required for secured APIs

Answer

17. What does JSON stand for?

Choose one option

1. JavaScript Object Notation
2. Java Serialized Object Network
3. JavaScript Oriented Networking
4. Java Standardized Object Namespace

Answer

18. Which type of response format is commonly used with RESTful APIs?

Choose one option

1. XML (eXtensible Markup Language)
2. CSV (Comma Separated Values)
3. JSON (JavaScript Object Notation)
4. HTML (Hypertext Markup Language)

Answer

 19. How can you pass parameters in the URL while making an API request?

1. Using the request body
2. Using query parameters after the question mark (?)
3. By including them in the HTTP headers
4. Parameters cannot be passed in the URL

Answer

20. Which type of response format is commonly used with SOAP APIs?

Choose one option

1. XML (eXtensible Markup Language)
2. CSV (Comma Separated Values)
3. JSON (JavaScript Object Notation)
4. HTML (Hypertext Markup Language)

Answer

21. What is the recommended MIME type for sending and receiving JSON over HTTP?

Choose one option

1. application/json
2. text/plain
3. application/xml
4. multipart/form-data

Answer

22. How can you validate the response status code using Rest Assured?

Choose one option

1. Using the `statusCode()` method
2. By comparing the response body with expected values
3. By checking the response headers
4. Status code validation is not supported by Rest Assured

Answer

23.  How can you extract values from JSON response using Rest Assured?

Choose one option

1. Using JSONPath expressions
2. By parsing the entire response as text and extracting manually
3. By converting JSON to XML and then extracting values
4. Value extraction is not possible with Rest Assured

Answer

24.  Can you perform authentication (e.g., basic authentication or OAuth2 token-based authentication) using Rest Assured?

Choose one option

1. Yes
2. No

Answer

25. Is it possible to write custom assertions while using Rest-Assured?

Choose one option

1. Yes
2. No

Answer

====================================================================

Answers

1) 1) Application Programming Interface
2) 4) 405 Method Not Allowed
3) 2) Uniform Interface
4) 1) 403
5) 2) Idempotence
6) 1) a java library for testing Restful Web services
7) 2) Response will return the details of a specific employee
8) 1)
9) 2) Accept
10) 3) Both (1) and (2)
11) 2) @POST
12) 2) @DefaultValue
13) 1) @QueryParam
14) 3) 204
15) 1) Postman
16) 1) By passing credentials as part of request headers or body
17) 1) JavaScript Object Notation.
18) 3) JSON (JavaScript Object Notation)
19) 2) Using query parameters after the question mark (?)
https://api.example.com/users?id=123&name=Vibha
20) 1) XML (eXtensible Markup Language)
21) 1) application/json
22) 1) Using the statusCode() method
23) 1) Using JSONPath expressions
24) 1) Yes
25) 1) Yes

HOME

Are you familiar with REST APIs and want to test your understanding? This post contains 25 useful REST API multiple-choice questions (quiz) to self-test your knowledge of REST API development.

1. What does the Acronym REST Stand for?

Select the best answer

1. Representational State Transform
2. Representational State Transfer
3. Represent State Transform
4. Represent State Transfer

Answer

2. What is the protocol used in REST?

Choose one option

1. FTP
2. HTTP
3. JMX
4. SOAP

Answer

3. Which of the following component of HTTP request contains metadata for the HTTP Request message as key-value pairs?

Choose one option

1. URI
2. VERB
3. HTTP Version
4. Request Header

Answer

4. Which of the following is correct about URI in RESTful web services?

Choose one option

1. Each resource in REST architecture is identified by its URI.
2. Purpose of an URI is to locate a resource(s) on the server hosting the web service.
3. Both (1) and (2)
4. None of the above

Answer

5.  What is the HTTP Status Code Related to Page Not Found?

Choose one option

1. 402
2. 404
3. 403
4. 401

Answer

6. What is the HTTP Code Related to Internal Server Error?

1. 500
2. 501
3. 504
4. 502

Answer

7. What does HTTP Code 200 indicate?

1. Error
2. Completed
3. Success
4. Warning

Answer

8. Which of the following is not an HTTP method?

Choose one option

1. CREATE
2. POST
3. PUT
4. OPTION

Answer

9. Which HTTP method do we use to make an HTTP request to create a new resource?

Choose one option

1. POST
2. PUT
3. GET
4. CREATE

Answer

10. Which HTTP method do we use to make an HTTP request to update an existing resource?

Choose one option

1. POST
2. PUT
3. UPDATE
4. DELETE

Answer

11. Choose the correct URI format to get a sub-resource by resource id and sub-resource id

Choose one options

1. /{resource}/{resource-id}/{sub-resource}/{sub-resource-id}
2. /{resource}/{sub-resource}/{sub-resource-id}
3. {sub-resource}/{sub-resource-id}/{resource}/{resource-id}
4. /{resource}/{resource-id}/{sub-resource-id}/{sub-resource}

Answer

12.  What does the HTTP status code 201 indicate?

Choose one option

1. OK
2. Created
3. Accepted
4. No Content

Answer

13. Which HTTP methods are commonly used in REST API operations?

Choose one option

1. GET, POST, PUT, DELETE
2. CREATE, READ, UPDATE, DELETE
3. INSERT, SELECT, UPDATE, DELETE
4. SEND, RECEIVE, MODIFY, DELETE

Answer

14. Which of the following HTTP method should be used to delete resource using RESTful web service?

Choose one option

1. GET
2. DELETE
3. POST
4. OPTIONS

Answer

15. What is the recommended method and URL pattern for retrieving a specific user?

Choose one option

1. GET /users/{id}
2. GET /user/{id}
3. GET /user?id={id}
4. GET /users?id={id}

Answer

16. Which of the following HTTP Status code means FORBIDDEN, states that user is not having access to method being used for example, delete access without admin rights?

Choose one option

1. 403
2. 404
3. 406
4. 409

Answer

17. What does the status code 302 represent?

Choose one option

1. Not Modified
2. User can select among multiple links and go to different page.
3. The resource requested has been found and moved temporarily to new URL location.
4. The page requested is available only by means of proxy address given in the response.

Answer

18. What category do 1xx HTTP status codes belong to?

Choose one option

1. Redirection
2. Client Error
3. Server Error
4. Informational

Answer

 19. What is the difference between PUT and PATCH methods in REST API?

1. PUT is used for creating resources, while PATCH is used for updating resources
2. PUT updates the entire resource, while PATCH updates only specific fields of a resource
3. PUT requires authentication, while PATCH does not
4. PUT is idempotent, while PATCH is not

Answer

20. What is the role of the “Content-Type” header in a REST API request?

Choose one option

1. It specifies the HTTP method to be used
2. It defines the format of the request payload
3. It provides authentication credentials
4. It determines the cache control policy for the request

Answer

21. What is the purpose of the “Authorization” header in a REST API request?

Choose one option

1. It specifies the format of the request payload
2. It provides additional metadata about the request
3. It provides authentication credentials for accessing protected resources
4. It determines the cache control policy for the request

Answer

22. In REST API design, what is idempotency?

Choose one option

1. The ability of an API to handle multiple requests in parallel
2. The property that a method can be called multiple times without different outcomes
3. The capability of an API to update data
4. The feature of an API that allows it to delete resources

Answer

23.  What is the primary purpose of the HTTP OPTIONS method in REST APIs?

Choose one option

1. To update a resource
2. To retrieve the communication options available on a resource or server
3. To delete a resource
4. To create a resource

Answer

24. Which is a common command-line tool for using or exploring an API?

Choose one option

1. ssh
2. bash
3. curl
4. powerShell

Answer

25. Which of the following directive of Cache Control Header of HTTP response indicates that resource is not cachable?

Choose all options

1. Public
2. Private
3. max-age
4. no-cache/no-store

Answer

====================================================================

Answers

1) 2) Representational State Transfer
2) 2) HTTP
3) 4) Request Header
4) 3) Both (1) and (2)
5) 2) 404
6) 1) 500
7) 3) Success
8) 1) CREATE
9) 1) POST
10) 2) PUT
11) 1) /{resource}/{resource-id}/{sub-resource}/{sub-resource-id}
12) 2) Created
13) 1) GET, POST, PUT, DELETE
14) 2) DELETE
15) 1) GET /users/{id}
16) 1) 403
17) 3) The resource requested has been found and moved temporarily to new URL location.
18) 4) Informational
19) 2) PUT updates the entire resource, while PATCH updates only specific fields of a resource
20) 2) It defines the format of the request payload
21) 3) It provides authentication credentials for accessing protected resources
22) 2) The property that a method can be called multiple times without different outcomes
23) 2) To retrieve the communication options available on a resource or server
24) 3) curl
25) 4) no-cache/no-store