Systems Security Certified Practitioner (SSCP) — Question 75

Which of the following remote access authentication systems is the most robust?

Answer options

• A. TACACS+
• B. RADIUS
• C. PAP
• D. TACACS

Correct answer: A

Explanation

TACACS+ is the most robust remote access authentication system because it provides strong encryption and supports more granular access controls compared to RADIUS, PAP, and TACACS. RADIUS, while secure, does not offer the same level of encryption as TACACS+. PAP is the least secure as it transmits credentials in clear text, making it vulnerable to interception.