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1.

What is Node.js?

A Java framework

A JavaScript framework

A JavaScript runtime

A JavaScript server

2.

How does Node.js handle concurrent tasks?

Node.js can't handle concurrent tasks.

Node.js uses multiple threads for concurrent tasks.

Node.js uses a single event loop for concurrent tasks.

Node.js uses multiple event loops for concurrent tasks.

3.

For which of these scenarios would a Node.js app be a good fit?

The app requires a non-blocking, event-driven server.

The app needs a Java runtime.

You need to build a mobile app.

The app requires CPU-intensive computations.

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