Which of the following is NOT a supported authentication method for CyberArk?

The correct choice identifies Facebook Login as not being a supported authentication method for CyberArk. CyberArk primarily focuses on security and access management within enterprise environments, where authentication methods are selected based on their security integration capabilities, standards compliance, and enterprise environment suitability.

CyberArk provides several authentication options that are designed for robust security needs, such as its own Vault auth, which leverages secure communications within its ecosystem. LDAP (Lightweight Directory Access Protocol) integration is also widely used in corporate environments, allowing organizations to authenticate users against their directory services, ensuring consistency and security in user management. Google Auth serves as another valid authentication method allowing two-factor authentication, enhancing security by requiring additional verification.

Facebook Login, however, is designed for consumer applications and social media platforms and does not align with the enterprise-level security requirements and integrations that CyberArk upholds. Consequently, its use would not be appropriate in the context of CyberArk's focus on secure access management.