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SMTP, FTP, and DNS are applications of the ____ layer.
72. SMTP, FTP, and DNS are applications of the ____ layer.
- Application
- Physical
- Data link
- 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.