While a network security product is being deployed, a customizable list of allowable protocols is shown. Which three protocols should be allowed to provide for the use of email on a network? (Choose three.)
- SMTP
- IMAP4
- Telnet
- DNS
- POP3
- HTTP
- TFTP
Explanation: The email protocols used on a network are SMTP, POP3, and IMAP4. SMTP is used to send messages to a local email server, whereas POP and IMAP are used to receive email.
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