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SMTP, FTP, and DNS are applications of the ____ layer.

72. SMTP, FTP, and DNS are applications of the ____ layer.

1. Application
2. Physical
3. Data link
4. Network

Answer

The correct answer is: A) Application

Explanation

SMTP (Simple Mail Transfer Protocol), FTP (File Transfer Protocol), and DNS (Domain Name System) are applications that operate at the application layer of the OSI model.