JSON MCQs – Tools and Debugging

Tools and debugging are essential aspects of working with JSON, especially in development and testing. JSON-specific tools like formatters, validators, and parsers simplify tasks like editing and validating JSON data while debugging tools help identify errors in real-time. Understanding how to use these tools effectively is a valuable skill for interview preparation and day-to-day programming. The following MCQs will help in your understanding of JSON tools and debugging techniques.

1.) Which of the following is used to validate the syntax of JSON data?

A) JSON Validator
B) JSON Formatter
C) JSON Beautifier
D) JSON Compressor

Answer: Option A

Explanation: A JSON Validator checks the syntax of JSON data to ensure it adheres to the JSON specification.

2.) Which online tool is commonly used to format JSON for readability?

A) Postman
B) JSONLint
C) GitHub
D) Visual Studio Code

Answer: Option B

Explanation: JSONLint is a popular online tool for validating and formatting JSON data for better readability.

3.) What does a JSON Formatter do?

A) Converts JSON to XML
B) Parses JSON into JavaScript objects
C) Compresses JSON into a single line
D) Formats JSON into a readable and indented structure

Answer: Option D

Explanation: JSON Formatters make JSON easier to read by adding proper indentation and spacing.

4.) What error does a missing comma between JSON key-value pairs produce?

A) Invalid JSON
B) Missing property name
C) Undefined object
D) SyntaxError: Unexpected token

Answer: Option D

Explanation: A missing comma causes a SyntaxError: Unexpected token because JSON requires commas to separate key-value pairs.

5.) Which of the following tools can debug REST API calls and their JSON responses?

A) JSONLint
B) Postman
C) Notepad++
D) Visual Studio Code

Answer: Option B

Explanation: Postman is widely used to test REST APIs and debug JSON responses.

6.) Which of the following tools allows real-time collaboration on JSON data?

A) JSONLint
B) JIRA
C) JSON Editor Online
D) Google Docs

Answer: Option C

Explanation: JSON Editor Online provides features for real-time collaboration on JSON data.

7.) How does Postman help in debugging JSON APIs?

A) It sends requests and shows JSON responses
B) It converts JSON to XML
C) It validates JSON against schemas
D) It beautifies JSON data

Answer: Option A

Explanation: Postman is used to send API requests and view JSON responses, aiding in debugging.

8.) What does a JSON compressor do?

A) Beautifies JSON
B) Validates JSON
C) Removes unnecessary whitespace for smaller size
D) Converts JSON to XML

Answer: Option C

Explanation: JSON compressors remove whitespace and reduce the size of JSON data for efficient transmission.

9.) Which browser’s developer tools are commonly used to debug JSON in web applications?

A) Internet Explorer
B) Google Chrome
C) Safari
D) Firefox

Answer: Option B

Explanation: Google Chrome’s Developer Tools are frequently used for debugging JSON in web applications.

10.) Which extension helps debug JSON in Visual Studio Code?

A) JSON Formatter
B) REST Client
C) JSON Tools
D) Prettier

Answer: Option C

Explanation: The JSON Tools extension enhances JSON debugging and formatting in Visual Studio Code.

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