N10-009 Exam Dumps | Which of the following ports is used for secure email?

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CompTIA.N10-009.v2025-01-15.q60
Question 55

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Question 55/60

Which of the following ports is used for secure email?

A. 25

B. 110

C. 143

D. 587

Correct Answer: D

Port 587 is used for secure email submission. This port is designated for message submission by mail clients to mail servers using the SMTP protocol, typically with STARTTLS for encryption.
* Port 25: Traditionally used for SMTP relay, but not secure and often blocked by ISPs for outgoing mail due to spam concerns.
* Port 110: Used for POP3 (Post Office Protocol version 3), not typically secured.
* Port 143: Used for IMAP (Internet Message Access Protocol), which can be secured with STARTTLS or SSL/TLS.
* Port 587: Specifically used for authenticated email submission (SMTP) with encryption, ensuring secure transmission of email from clients to servers.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Discusses email protocols and ports, including secure email transmission.
* Cisco Networking Academy: Provides training on securing email communications and the use of appropriate ports.
* Network+ Certification All-in-One Exam Guide: Explains email protocols, ports, and security considerations for email transmission.

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