What is difference between HTTP and HTTPS? | Fresher interview questions
HTTP (Hypertext Transfer Protocol) and HTTPS (Hypertext Transfer Protocol Secure) are both protocols used for transmitting data over the internet. They define how data is structured and exchanged between a client (usually a web browser) and a server (hosting a website or web application). However, they differ in terms of security.
*HTTP (Hypertext Transfer Protocol):*
HTTP is the foundation of data communication on the World Wide Web. It's the protocol used to transfer resources such as HTML files, images, videos, and other multimedia content from web servers to web browsers. When you type a website's URL in your browser, the browser sends an HTTP request to the server, which then responds with the requested content.
While HTTP is simple and efficient for transferring data, it has a major security drawback: the data sent between the client and the server is not encrypted. This means that sensitive information, such as login credentials and personal data, can be intercepted and viewed by malicious actors.
*HTTPS (Hypertext Transfer Protocol Secure):*
HTTPS is an extension of HTTP that adds a layer of security to the communication between the client and the server. It uses encryption protocols like SSL (Secure Sockets Layer) or its successor TLS (Transport Layer Security) to encrypt the data transmitted between the two.
When you visit a website using HTTPS, your browser and the web server establish a secure connection, ensuring that any data exchanged is encrypted and cannot be easily intercepted or tampered with. This is particularly important for protecting sensitive information, such as credit card details, passwords, and personal information, from being accessed by unauthorized parties.
To identify a secure website using HTTPS, you'll often see a padlock icon in the address bar of your browser, and the website's URL will start with "https://" instead of "http://".
In summary, HTTP is the protocol for transferring data over the web, but it lacks encryption. HTTPS, on the other hand, provides a secure way to transmit data by encrypting the communication between the client and the server, making it a safer choice for transmitting sensitive information online.
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