正解:B
Zero Trust is based on the principle of "never trust, always verify." Option B is correct because access is granted only after strong identity verification, policy evaluation, and continuous monitoring. Zero Trust rejects the old perimeter assumption that users or devices inside the internal network should automatically be trusted. Access decisions should consider identity, device posture, location, sensitivity of the resource, session risk, and ongoing behavior. MFA is commonly used in Zero Trust, but option C is too narrow because Zero Trust applies beyond remote access and beyond MFA alone. Role-based limitations and periodic reviews are useful, but option D does not capture continuous verification. Option A is the opposite of Zero Trust because it assumes internal trust after initial authentication.