TestOut LabSim A+ Certification Practice Exam

Which protocol is used for sending messages to multiple recipients via email?

1. SMTP

2. IMAP

3. POP3

4. Telnet

The correct answer is: SMTP

The correct choice is SMTP, which stands for Simple Mail Transfer Protocol. This protocol is specifically designed for sending email messages from one server to another or from a client to a server. When it comes to sending emails to multiple recipients, SMTP supports the inclusion of multiple addresses in the "To," "Cc," (carbon copy), or "Bcc," (blind carbon copy) fields, allowing a single message to be delivered to various recipients simultaneously. The other choices involve different functions related to email but do not handle the sending of messages to multiple recipients. IMAP (Internet Message Access Protocol) and POP3 (Post Office Protocol) are both primarily concerned with retrieving and managing emails stored on a mail server, rather than sending them. IMAP allows users to access and manipulate their email messages directly on the server, while POP3 focuses on downloading messages to a local device for offline access. Telnet is a general-purpose network protocol used for accessing remote devices and services but is not inherently intended for email transmission. Therefore, for the specific function of sending messages to multiple recipients via email, SMTP is the appropriate protocol.