Node.js Basics Module #51

Question 1

How can you install Node.js?

Answer 1

Visit https://nodejs.org/en/download/

Or on a mac using terminal brew install node

Question 2

What is the main advantage of using Node.js as a server side language?

Answer 2

You don’t have to relearn a new language.

Question 3

What technology runs Google Chrome?

Answer 3

Node.js

Question 4

Is it common to see the call stack blocked by code from a node library?

Answer 4

No. Because A Node.js app is run by a single process, without creating a new thread for every request. Node provides a set of asynchronous I/O primitives in its standard library that will prevent JavaScript code from blocking and generally, libraries in Node.js are written using non-blocking paradigms, making a blocking behavior an exception rather than the normal.

Question 5

What happens when Node.js needs to perform a network call, or access a database or the filesystem?

Answer 5

Instead of blocking the thread Node.js will resume the operations when the response comes back, instead of wasting CPU cycles waiting.