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Node.js Interview Questions

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21.

How do you handle errors in asynchronous operations?

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22.

What is the difference between Promise.all() and Promise.allSettled()?

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23.

How does Node.js resolve modules?

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24.

What are Streams in Node.js and when would you use them?

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25.

Explain the difference between fs.readFile() and fs.createReadStream().

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26.

What is the Buffer class in Node.js?

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27.

Explain request and response objects in Node.js HTTP.

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28.

What is middleware in Express.js?

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29.

How do you handle errors in Express.js?

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30.

What are some common debugging techniques in Node.js?

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31.

How do you implement caching in Node.js?

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32.

What are common security vulnerabilities in Node.js applications?

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33.

How do you implement authentication and authorization?

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34.

How do you secure API endpoints?

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35.

What is input validation and how do you implement it?

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36.

How do you implement WebSockets in Node.js?

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37.

What is Event Emitter and how do you use it?

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38.

How do you implement database connections and ORM in Node.js?

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39.

What is testing in Node.js and how do you implement it?

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40.

What is middleware pattern and how to create custom middleware?

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Showing 21 to 40 of 57 results

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