Identify the correct order in which the following actions A-D take place in an interaction between a web browser and a web server when you plan to visit Amazon website to purchase a Solid State Drive (SSD).

(A) The web browser requests a webpage using HTTP

(B) The web browser establishes a TCP connection with the Amazon's web server

(C) The web server sends the requested webpage using HTTP

(D) The web browser finds the IP address of Amazon's website using DNS

Choose the correct answer from the options given below:

The correct answer is - (D), (B), (A), (C)

Key Points

• (D) The web browser finds the IP address of Amazon's website using DNS
  • The first step is to translate the domain name (e.g., www.amazon.com) into an IP address.
  • This is done using the Domain Name System (DNS).
• (B) The web browser establishes a TCP connection with the Amazon's web server
  • Once the IP address is known, the browser establishes a TCP connection with the server.
  • This connection is necessary for reliable communication.
• (A) The web browser requests a webpage using HTTP
  • After the TCP connection is established, the browser sends an HTTP request to the server for the desired webpage.
• (C) The web server sends the requested webpage using HTTP
  • The server processes the request and sends back the requested webpage using HTTP.

Additional Information

• DNS (Domain Name System)
  • DNS servers translate human-readable domain names into IP addresses.
  • It acts as a phonebook for the Internet.
• TCP (Transmission Control Protocol)
  • TCP is a core protocol of the Internet Protocol Suite.
  • It provides reliable, ordered, and error-checked delivery of data between applications.
• HTTP (Hypertext Transfer Protocol)
  • HTTP is the foundation of data communication for the World Wide Web.
  • It defines how messages are formatted and transmitted, and how web servers and browsers should respond to various commands.
• Web Browsers
  • Web browsers are software applications used to access information on the World Wide Web.
  • Common browsers include Google Chrome, Mozilla Firefox, and Microsoft Edge.