Quiz: Node JS-Programming Test Questions

What is node.js?

Node.js is an open-source, cross-platform runtime environment for JavaScript. It is a well-liked tool for practically every project kind!
The core JavaScript execution engine used by the runtime, Chrome V8, is written in C++. Node.js now has more use cases, such as accessing core system capabilities (like networking).
Without starting a new thread for each request, a Node.js application operates in a single process. Blocking behavior in Node.js libraries is the exception since libraries in Node.js are typically created using non-blocking paradigms. Node.js includes a set of asynchronous I/O primitives in its standard library that prevent JavaScript code from blocking.

Node.js will continue its work once the response has been received and not pause the thread and spend CPU time waiting for an I/O action, such as reading from the network or accessing a database or disk.

Applications Of Node.js

• Real-time chats—Node.js is well suited to handling real-time communication due to its single-threaded asynchronous nature. It is frequently used to construct chatbots and is simple to grow. The development of extra chat capabilities like multi-person chat and push alerts is also made simple by Node.js.
• IoT: Due to the regular transmission of small data packets that might accumulate into a high number of requests, Internet of Things—IoT applications typically include several sensors. Node.js is an excellent choice because it can swiftly manage numerous concurrent requests.
• Data streaming—Netflix and other companies utilize Node.js for streaming. This is primarily because Node.js is lightweight, quick, and offers a native streaming API. The data is sent straight to its destination using these streams, which enable users to pipe requests to one another.