YourAppURL

Replace the value you are getting underneath the app above.

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

## `cURL`
Run the following command to look at a real HTTP response.


**cURL** (pronounced 'curl') is a command-line tool that transfers data to or from a server. The transfer can be based on a vast set of protocols. cURL stands for "Client URL," and is an important tool to know as a front-end engineer for testing purposes. You can read more about cURL on its [man page](https://curl.haxx.se/docs/manpage.html).


### Explanation

Let’s learn about cURL’s components.

- `curl` is the name of the program that tells the terminal that this is a curl command.
- The `--head` flag, or `-I` in short, tells cURL to send an HTTP request with the `head` method. In other words, instead of fetching the requested resource, just the response headers are fetched.
- The `-silent` flag tells cURL not to display the progress meter. The progress meter is interpreted as an error on our platform, which is why we decided to remove it. The command is perfectly fine without this flag otherwise.


We encourage you to explore the cURL command. You can find a list of all the flags under the 'options' heading on cURL's [man page](https://curl.haxx.se/docs/manpage.html). Try different websites and different flags, and see what you get!

### Sample output

The output of this command is an HTTP response such as the following. Notice the HTTP response code and the headers. 


# `cURL`
Run the following command to look at a real HTTP response.


**cURL** (pronounced 'curl') is a command-line tool that transfers data to or from a server. The transfer can be based on a vast set of protocols. cURL stands for "Client URL," and is an important tool to know as a front-end engineer for testing purposes. You can read more about cURL on its [man page](https://curl.haxx.se/docs/manpage.html).


## Explanation

Let’s learn about cURL’s components.

- `curl` is the name of the program that tells the terminal that this is a curl command.
- The `--head` flag, or `-I` in short, tells cURL to send an HTTP request with the `head` method. In other words, instead of fetching the requested resource, just the response headers are fetched.
- The `-silent` flag tells cURL not to display the progress meter. The progress meter is interpreted as an error on our platform, which is why we decided to remove it. The command is perfectly fine without this flag otherwise.


We encourage you to explore the cURL command. You can find a list of all the flags under the 'options' heading on cURL's [man page](https://curl.haxx.se/docs/manpage.html). Try different websites and different flags, and see what you get!

## Sample output

The output of this command is an HTTP response such as the following. Notice the HTTP response code and the headers. 


cURL is an important command for testing as a front-end engineer. Let's learn about it in this lesson.

Introduction

Network

Security

Optimizing Loading Performance

Optimizing Browser Rendering Performance

Search Engine Optimization

System Design

APIs

Testing

Version Control

Task Runners & Bundlers

Conclusion

Exercise: Looking at Real HTTP Response Messages

`cURL`

Explanation