Top 10 Essential Web Development Questions

1. What is Cross-origin Resorts sharing (CORS)? Cross-origin Resorts sharing, also known as CORS, is an essential security feature in web application development. With the help of this feature, a website can access data from another website. As a result, data safely travels from one website to another website in the same Browser. 2. What is Webpack? Webpack is called the module bundler. It has various uses in web development. This tool works in a simple way like compressing JavaScript and CSS files. The main purpose of this builder tool is to load browsers faster. 3. Describe Web Storage Suppose you open a website in a browser and that website stores some amount of data in that browser. The process is called web storage. It helps the website to remember your activities. There are two types of web storage: local storage and session storage 4. Explain the Content delivery network (CDN) in Web Development. A content delivery network, also called CDN, is a series of servers. These servers are spread all over the world. When you request some files like images or videos, the nearest server delivers you the results. 5. What do you mean by CSS Media Queries? Media queries in CSS are a set of rules. They enhance the responsiveness of a website. Whether you open a website on a phone, tablet or computer, it can change its size depending on the screen size of your device. For better understanding, you can see how these simple converter tools that convert MPG to Kilometres per Litre for free are mobile responsive. 6. What are Local storage and cookies? It is important to understand the concept of local storage and cookies. They are examples of web storage which is used to store important data in your browsers. With the help of local storage, you can store data (up to 5 MB) of a website. You can access this data even after you close the browser. Whereas, cookies can store only 4 KB of data. Unlike Local storage, all data will be lost as soon as you close the browser. 7. What is the purpose of the event loop in Node JS? The event loop single-handedly manages all the essential tasks of a website. It can read multiple files, interpret user inputs, etc without hampering the speed of a website. These reasons make the event loop an essential part of Node Js. 8. What are the processes for optimizing the loading time of web applications? If you build a website that loads slowly, it will give a bad impression to your users. So it is necessary for web developers to optimize the loading speed of a website. Minifying HTML CSS and JavaScript helps remove unnecessary spaces and line breaks. It helps the code to run faster. You need to convert JPG/ JPEG images into web format to reduce their file size. The integration of content delivery networks such as Cloudflare optimizes website speed. 9. What is long polling? How does it work? Long polling is an effective communication technique between browser and server used by wave applications. Using this technique, the browser connects with the server without any interruptions. 10. What are the advantages of HTTP/2 over HTTP 1.1? With the arrival of HTTP/2, the performance has improved. As a result, the web pages now take less time to load. It has become much easier to send multiple requests at the same time. You can also check my other articles where I covered the frequently asked interview questions on Python.

Apr 7, 2025 - 22:02

Top 10 Essential Web Development Questions

1. What is Cross-origin Resorts sharing (CORS)?

Cross-origin Resorts sharing, also known as CORS, is an essential security feature in web application development. With the help of this feature, a website can access data from another website. As a result, data safely travels from one website to another website in the same Browser.

2. What is Webpack?

Webpack is called the module bundler. It has various uses in web development. This tool works in a simple way like compressing JavaScript and CSS files. The main purpose of this builder tool is to load browsers faster.

3. Describe Web Storage

Suppose you open a website in a browser and that website stores some amount of data in that browser. The process is called web storage. It helps the website to remember your activities. There are two types of web storage: local storage and session storage

4. Explain the Content delivery network (CDN) in Web Development.

A content delivery network, also called CDN, is a series of servers. These servers are spread all over the world. When you request some files like images or videos, the nearest server delivers you the results.

5. What do you mean by CSS Media Queries?

Media queries in CSS are a set of rules. They enhance the responsiveness of a website. Whether you open a website on a phone, tablet or computer, it can change its size depending on the screen size of your device. For better understanding, you can see how these simple converter tools that convert MPG to Kilometres per Litre for free are mobile responsive.

6. What are Local storage and cookies?

It is important to understand the concept of local storage and cookies. They are examples of web storage which is used to store important data in your browsers.
With the help of local storage, you can store data (up to 5 MB) of a website. You can access this data even after you close the browser. Whereas, cookies can store only 4 KB of data. Unlike Local storage, all data will be lost as soon as you close the browser.

7. What is the purpose of the event loop in Node JS?

The event loop single-handedly manages all the essential tasks of a website. It can read multiple files, interpret user inputs, etc without hampering the speed of a website. These reasons make the event loop an essential part of Node Js.

8. What are the processes for optimizing the loading time of web applications?

If you build a website that loads slowly, it will give a bad impression to your users. So it is necessary for web developers to optimize the loading speed of a website. Minifying HTML CSS and JavaScript helps remove unnecessary spaces and line breaks. It helps the code to run faster. You need to convert JPG/ JPEG images into web format to reduce their file size. The integration of content delivery networks such as Cloudflare optimizes website speed.

9. What is long polling? How does it work?

Long polling is an effective communication technique between browser and server used by wave applications. Using this technique, the browser connects with the server without any interruptions.

10. What are the advantages of HTTP/2 over HTTP 1.1?

With the arrival of HTTP/2, the performance has improved. As a result, the web pages now take less time to load. It has become much easier to send multiple requests at the same time.

You can also check my other articles where I covered the frequently asked interview questions on Python.