220-1102 Question #100: Real Exam Question with Answer & Explanation

The correct answer is D: TACACS+. TACACS+ is a proprietary Cisco protocol used for Authentication, Authorization, and Accounting (AAA) services. It offers enhanced security and separate authentication and authorization processes compared to open standards.

Security

Question

Which of the following is a proprietary Cisco AAA protocol?

Options

ATKIP
BAES
CRADIUS
DTACACS+

Explanation

TACACS+ is a proprietary Cisco protocol used for Authentication, Authorization, and Accounting (AAA) services. It offers enhanced security and separate authentication and authorization processes compared to open standards.

Common mistakes.

A. TKIP is an encryption protocol used in WPA for Wi-Fi security, not an AAA protocol.
B. AES is an encryption standard, not an AAA protocol.
C. RADIUS is an open-standard AAA protocol, not proprietary to Cisco, and encrypts only the password.

Concept tested. Proprietary AAA protocols

Reference. https://www.cisco.com/c/en/us/support/docs/security-vpn/remote-authentication-dial-user-service-radius/13840-aaa-tacacs-radius.html

Topics

#AAA protocols#TACACS+#Networking security#Proprietary protocols

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