Question

Which protocol is the Internet standard protocol for transmitting email messages over networks, and is responsible only for sending—but not receiving—email messages?

a) SMTP
b) POP3
c) IMAP
d) HTTP

Answer 1

SMTP (Simple Mail Transfer Protocol) is the Internet standard protocol for sending email messages over networks, exclusively handling the sending part of the email communication process.

Step-by-step explanation:

The Internet standard protocol responsible for sending but not receiving email messages over networks is SMTP (Simple Mail Transfer Protocol). SMTP handles the transmission of email messages from a sender's email client to the recipient's mail server. However, to retrieve or receive these messages, different protocols are used, such as POP3 (Post Office Protocol 3) or IMAP (Internet Message Access Protocol). SMTP does not handle the receiving process; it is only involved in the sending part of the email communication process. It works in conjunction with other protocols, like POP3 and IMAP, which are responsible for receiving email messages.