Which three application layer protocols use TCP?

Understand the Problem

The question is asking for examples of application layer protocols that operate over TCP (Transmission Control Protocol). We will identify three protocols commonly used in this layer of the networking model that utilize TCP for their communication.

Answer

SMTP, FTP, and HTTP

The three application layer protocols that use TCP are SMTP, FTP, and HTTP.

More Information

SMTP is used for email transfer, FTP is for file transfers, and HTTP is for web page transmission.

Tips

Confusing TCP and UDP protocols. Remember that TCP is connection-oriented, while UDP is connectionless.

Sources

Which three application layer protocols use TCP? - itexamanswers.net
Three application layer protocols that use TCP - brainly.com

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