Which security mechanism is commonly used to protect traffic between a client and server in a browser session?

• A. HTTPS/TLS encryption
• B. Telnet
• C. FTP
• D. SNMP

Answer: (A)

Secure browser sessions rely on encryption and authentication provided by HTTPS over TLS. TLS creates an encrypted channel between the browser and the server, authenticates the server (and optionally the client) using certificates, and negotiates strong encryption keys for the session. This combination offers confidentiality, integrity, and authenticity, so HTTP data like page content, credentials, and cookies stay private and cannot be altered in transit.

Other options do not protect browser traffic in the same way: Telnet transmits data in plaintext, FTP can operate without encryption, and SNMP is a management protocol not designed to secure web page traffic.