How Node.js Works MCQ | Node.js Architecture Multiple Choice Questions

Direction: Choose the correct option

How does Node.js handle multiple concurrent requests?

A. By queuing requests sequentially

B. By using multiple processes

C. Using an event-driven, non-blocking I/O model

D. By creating a new thread for each request

Direction: Choose the correct option

What is the event loop in Node.js?

A. A mechanism that handles asynchronous callbacks

B. A type of timer

C. A way to iterate over arrays

D. A loop that runs events in the browser

Direction: Choose the correct option

Which of the following best describes Node.js architecture?

A. Single-threaded with blocking I/O

B. Multi-threaded with blocking I/O

C. Multi-process with shared memory

D. Single-threaded with non-blocking I/O

Direction: Choose the correct option

What is the role of libuv in Node.js?

A. To parse JavaScript code

B. To provide the event loop and handle asynchronous I/O

C. To compile Node.js code

D. To manage npm packages

Direction: Choose the correct option

In Node.js, what happens when an asynchronous operation completes?

A. The operation is repeated

B. The program exits

C. A callback function is placed in the event queue

D. The main thread is interrupted

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