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Home » Quiz » Node.js Quiz

The Buffer.isBuffer(obj) method in Node.js is used to determine if an object is a ______.

Difficulty level
  • string
  • buffer
  • stream
  • file
The Buffer.isBuffer method is used to determine if an object is a buffer in Node.js. It helps identify whether a given object is a Buffer instance or not.
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Node.js Quiz
Quiz
You are developing a high-traffic RESTful API with Express. How would you design the architecture to ensure optimal performance, scalability, and maintainability?
The ______ command can be used to update the package.json file to match the actual versions installed in the node_modules directory.

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  • In which scenario would the do-while loop be more appropriate than the while loop in JavaScript?
  • You are developing a RESTful API using the http module and need to support CORS. How would you implement CORS headers to handle pre-flight requests in your HTTP server?
  • In Express, ______ is used to match any route that has not been matched by earlier routes.

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