Which protocol is commonly used to deliver Hypertext documents on the web?

Which protocol is commonly used to deliver Hypertext documents on the web?

• A. SMTP
• B. POP3
• C. FTP
• D. HTTP

Answer: (D)

Web pages are hypertext documents fetched over HTTP, the protocol that governs how those documents are requested and delivered. When a browser opens a page, it sends a request to a web server for a URL, and the server responds with the HTML (and any linked CSS, images, or scripts) that makes up the page. HTTP defines the format of these requests and responses, along with status codes and simple rules for transferring the content; it’s essentially the mechanism behind web page delivery. HTTPS is the secure version of this protocol, using encryption to protect data in transit. In contrast, SMTP and POP3 are for email, and FTP is for general file transfer, not the day-to-day delivery of web pages. That’s why this protocol is the one commonly used to deliver Hypertext documents on the web.

Web pages are hypertext documents fetched over HTTP, the protocol that governs how those documents are requested and delivered. When a browser opens a page, it sends a request to a web server for a URL, and the server responds with the HTML (and any linked CSS, images, or scripts) that makes up the page. HTTP defines the format of these requests and responses, along with status codes and simple rules for transferring the content; it’s essentially the mechanism behind web page delivery. HTTPS is the secure version of this protocol, using encryption to protect data in transit. In contrast, SMTP and POP3 are for email, and FTP is for general file transfer, not the day-to-day delivery of web pages. That’s why this protocol is the one commonly used to deliver Hypertext documents on the web.