It would save me a lot of memorization

November 1, 2012



What of these services commonly use TCP port 25?

A) FTP (data)

B) POP3

C) SMTP

D) FTP (control)

E) Let’s run everything through tcp/25!


The answer: C) SMTP

The Simple Mail Transfer Protocol is used to transfer mail between mail systems, and it’s common to configure an SNMP location in a standalone mail client for outgoing mail.

Want to know more? Watch “Common Ports.”

The fundamental languages used over our computer networks are a standard set of protocols that are used around the world. In this video, you’ll learn about protocols and the set of standards associated with TCP/IP. You’ll also learn the essentials of TCP/IP and how subnetting can be used to build today’s modern networks.

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Category: CompTIA A+ Pop Quizzes

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