Question

The standard protocol used for sending e-mail is called
1. http
2. SMTP
3. telnet
4. ftp

Answer 1

Correct Answer - Option 2 : SMTP

The correct answer is SMTP.

• Simple Mail Transfer Protocol (SMTP): 
  • It is the standard protocol for sending emails across the Internet. Hence, Option 2 is correct.
  • IMAP and POP3 are the Internet mail protocols used for retrieving emails.
  • MIME allows the users to exchange different kinds of data files in an email: audio, video, images, etc.
  • It is used for sending and receiving e-mail between e-mail clients and servers.
  • When an SMTP server receives an e-mail from a mail client, the SMTP server will then check the MX records for the domain in the e-mail address in order to exchange the mail with the remote SMTP server.
  • It will then either process the mail (if it is the MX server) or forward it to the appropriate SMTP server.

HTTP	It is an application-layer protocol for transmitting hypermedia documents, such as HTML. It was designed for communication between web browsers and web servers, but it can also be used for other purposes.
Telnet	Telnet utility allows users to test connectivity to remote machines and issue commands through the use of a keyboard.
Ftp	The File Transfer Protocol is a standard communication protocol used for the transfer of computer files from a server to a client on a computer network.