Which option is a classic security protocol example?

Which option is a classic security protocol example?

• A. TLS
• B. FTP
• C. SMTP
• D. SNMP

Answer: (A)

Security protocols are built to protect data in transit, providing encryption, integrity, and authentication. TLS is such a protocol; it establishes encrypted channels, ensures data isn’t tampered with, and verifies endpoints, making it the classic example of a security protocol. It’s the foundation behind HTTPS and widely used to secure many other services. Other options are not primarily security protocols: plain FTP sends credentials in cleartext (though encrypted variants exist), SMTP is for mail transfer (security can be added with TLS but isn’t its main function), and SNMP is a management protocol with security features only in newer versions.

Security protocols are built to protect data in transit, providing encryption, integrity, and authentication. TLS is such a protocol; it establishes encrypted channels, ensures data isn’t tampered with, and verifies endpoints, making it the classic example of a security protocol. It’s the foundation behind HTTPS and widely used to secure many other services. Other options are not primarily security protocols: plain FTP sends credentials in cleartext (though encrypted variants exist), SMTP is for mail transfer (security can be added with TLS but isn’t its main function), and SNMP is a management protocol with security features only in newer versions.