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The ultimate guide to web development interviews. Developed by FAANG engineers, practice with real-world interview questions covering network security, system design, SEO, APIs, and more.

oct6.tar.gz

server

JavaScript

Grunt

webpack

webpack-loaders

Grunt-eslint

ProgressiveRendering

webpack-code-splitting

This course compiles a comprehensive range of questions that are most likely to be asked during the frontend interview. Where many interview prep courses focus on data structures and algorithms, this course focuses on a variety of topics from network security to system design.

In this course, you will solve interview questions that cover general aspects of web development. You’ll start by going over network security and optimization techniques for load balancing and browser rendering. After that, you’ll move on to interview questions around SEO, APIs, and system design.

Overall, these are questions that are often overlooked, but they can really make you stand out from your peers. By the end of this course, you will have the confidence and ability to go in and ace that interview.

Web Development Interview Handbook

Controls who can access the whole website. 

Controls what domain can access what resource on the website.

What does the `Access-Control-Allow-Origin` header do?

What does the <code>Access-Control-Allow-Origin</code> header do?

By default, any resource can be accessed from any other domain.

By default, any resource can be accessed from any other domain.

Allows Google.com to access the index.html file

Allows all other domains to access the index.html file

Allows no other domains to access the index.html file

Which option describes what the following code does?

```
router.get('/', function(req,res){
  res.header("Access-Control-Allow-Origin", "Google.com");
  res.sendFile(path + 'index.html');
});
```



Which option describes what the following code does?
<pre><code>router.get('/', function(req,res){
 res.header(&quot;Access-Control-Allow-Origin&quot;, &quot;Google.com&quot;);
 res.sendFile(path + 'index.html');
});
</code></pre>

A full domain name resolution starts with the root server being contacted first. 

A full name resolution starts with the ISP server being contacted first.

The local cache is checked to see if the name has already been resolved.

What happens when you enter a URL into your browser?

What happens when you enter a URL into your browser?

Suppose you're building the website for a banking organization and you decide to allow all domains to access the resource used for transferring money. Can that be dangerous?

Suppose you’re building the website for a banking organization and you decide to allow all domains to access the resource used for transferring money. Can that be dangerous?

Introduction

Network

Security

Optimizing Loading Performance

Optimizing Browser Rendering Performance

Search Engine Optimization

System Design

APIs

Testing

Version Control

Task Runners & Bundlers

Conclusion

CORS: Quiz