JSON in APIs and Web Development

Question 1 of 20

Which HTTP method is most commonly used to send data as JSON in RESTful APIs?

Choose 1 answer

A. GET

B. POST

C. PUT

D. DELETE

Question 2 of 20

What Content-Type header is typically used when sending JSON data in an HTTP request?

Choose 1 answer

A. text/html

B. application/xml

C. application/json

D. text/json

Question 3 of 20

Which of the following JavaScript methods can be used to parse a JSON response in an API request using the Fetch API?

Choose 1 answer

A. response.text()

B. response.json()

C. JSON.parse(response)

D. response.body()

Question 4 of 20

True or False: JSON Web Tokens (JWT) are signed but not encrypted by default.

Choose 1 answer

A. True

B. False

Question 5 of 20

Which of the following is the correct structure of a JSON Web Token (JWT)?

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A. Header.Payload.Signature

B. Payload.Signature.Header

C. Signature.Header.Payload

D. Header.Signature.Payload

Question 6 of 20

What function can be used to handle JSON data returned by an AJAX request in jQuery?

Choose 1 answer

A. $.getJSON()

B. $.parseJSON()

C. $.post()

D. $.ajax()

Question 7 of 20

What is the primary use of JWT in web development?

Choose 1 answer

A. Data encryption

B. User authentication and authorization

C. Tokenization of sensitive data

D. API rate limiting

Question 8 of 20

Which of the following correctly represents a JSON API response with an error message?

Choose 1 answer

A. {"error": "Invalid request", "code": 400}

B. {"error": 400, "message": "Invalid request"}

C. {"status": "error", "code": 400, "details": "Invalid request"}

D. {"400": "Invalid request"}

Question 9 of 20

How would you send a JSON payload using a POST request with the Fetch API?

Choose 1 answer

A. fetch('url', { method: 'POST', body: JSON.stringify(data), headers: {'Content-Type': 'application/json'}})

B. fetch('url', { method: 'POST', data: JSON.stringify(data) })

C. fetch('url', { method: 'GET', body: JSON.stringify(data) })

D. fetch('url', { method: 'POST', body: data })

Question 10 of 20

What will be the output of the following code snippet? fetch('/api').then(response => response.json()).then(data => console.log(data));

Choose 1 answer

A. It logs the parsed JSON response from '/api' to the console.

B. It logs the response object to the console.

C. It throws an error because 'response' is not defined.

D. It returns a promise but does not log anything.

Question 11 of 20

Which of the following are the two types of JSON tokens in a JWT?

Choose 1 answer

A. Access Token and Refresh Token

B. ID Token and Access Token

C. Access Token and Secret Key

D. ID Token and Secret Token

Question 12 of 20

Which of the following JSON Web Token (JWT) components is responsible for ensuring data integrity?

Choose 1 answer

A. Header

B. Payload

C. Signature

D. Token

Question 13 of 20

True or False: You can send JSON data in the body of a GET request.

Choose 1 answer

A. True

B. False

Question 14 of 20

Which method would you use in Angular to retrieve data from a JSON-based REST API?

Choose 1 answer

A. $http.get()

B. fetch()

C. HttpClient.get()

D. axios.get()

Question 15 of 20

How is the 'Bearer' token commonly passed in HTTP requests for API authentication?

Choose 1 answer

A. In the URL query string

B. In the Authorization header

C. In the body of the request

D. In a custom header

Question 16 of 20

What does the following code do? fetch('https://api.example.com/data') .then(response => response.json()) .then(data => console.log(data)) .catch(error => console.error('Error:', error));

Choose 1 answer

A. Fetches JSON data from 'https://api.example.com/data' and logs it to the console.

B. Sends JSON data to 'https://api.example.com/data' and logs the response.

C. Logs the response status code to the console.

D. Fetches HTML content and logs it to the console.

Question 17 of 20

In a typical REST API response, how is a successful JSON response indicated?

Choose 1 answer

A. By a 404 HTTP status code

B. By a 'success' message in the body

C. By a 200 HTTP status code

D. By an empty JSON object

Question 18 of 20

Which HTTP method is most often used to retrieve JSON data from a RESTful API?

Choose 1 answer

A. GET

B. POST

C. PUT

D. DELETE

Question 19 of 20

What is the purpose of JSON Web Tokens (JWT) in RESTful APIs?

Choose 1 answer

A. To encrypt data

B. To authenticate and authorize users

C. To validate HTTP requests

D. To compress JSON responses

Question 20 of 20

Which of the following statements about JSON Web Tokens (JWT) and their use in RESTful APIs is correct? (Select all that apply)

Choose 2 answers

A. JWTs can be used to authenticate users by including a signature to verify the token's integrity.

B. JWTs are typically sent as query parameters in HTTP GET requests to secure API endpoints.

C. JWTs can store user roles and permissions within the token payload, which helps with authorization.

D. JWTs require the server to store session data, making them similar to traditional session-based authentication.

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