In a URL, which value is a common scheme?

In a URL, which value is a common scheme?

• A. http
• B. ftp
• C. mailto
• D. file

Answer: (A)

A URL’s scheme tells the browser which protocol to use to access the resource. The http scheme is a common one for fetching web pages from servers, and it appears at the start of a URL as http://example.com. It defines how the browser requests data and how the server should respond, enabling the transfer of HTML, images, and other web content. Other schemes have different purposes: ftp is for file transfer to FTP servers, mailto opens an email client to compose a message, and file accesses local or networked files directly. While valid in their contexts, they aren’t the standard way to load typical web content, which is why http is the correct answer.

A URL’s scheme tells the browser which protocol to use to access the resource. The http scheme is a common one for fetching web pages from servers, and it appears at the start of a URL as http://example.com. It defines how the browser requests data and how the server should respond, enabling the transfer of HTML, images, and other web content.

Other schemes have different purposes: ftp is for file transfer to FTP servers, mailto opens an email client to compose a message, and file accesses local or networked files directly. While valid in their contexts, they aren’t the standard way to load typical web content, which is why http is the correct answer.