node.js

Question 1

What is Node.js?

Answer 1

JavaScript runtime built on Chrome’s V8 JavaScript engine

Question 2

What can Node.js be used for?

Answer 2

To build scalable network applications

Write your code in JavaScript and execute it with node

Question 3

What is REPL?

Answer 3

Read-eval-print loop

Simple interactive computer programming environment that takes single user inputs, executes them, and returns the result to the user

A program written in REPL environment is executed piecewise

Question 4

When was Node.js created?

Answer 4

2009

Question 5

What backend languages have you heard of?

Answer 5

JavaScript, Ruby, PHP, Java Python, C, C#, C++, Rust

Question 6

What is a computer process?

Answer 6

A process is the instance of a computer program that is being executed by one or many threads. It contains the program code and its activity.

Question 7

Why should a full stack Web Developer know that computer processes exist?

Answer 7

Full stack web development is based on making multiple processes work together to form one application

Question 8

What is the process object in a Node.js program?

Answer 8

The process object is a global that provides information about, and control over, the current Node.js process.

As a global, it is always available to Node.js applications without using require()

Question 9

How do you access the process object in a Node.js program?

Answer 9

It’s included in the global. It can be used at any time.

Question 10

What is the data type of process.argv in Node.js?

Answer 10

An array of strings