Which of the following IA principles is crucial for identifying users/accounts and preventing unauthorized access to resources?

• Integrity
• Availability
• Non-repudiation
• Authentication

Which of the following protocol employs a client–server model and provides authentication, authorization, and accounting (AAA) for remote-access servers to communicate with a central server?

• SMTP
• HTTPS
• IPsec
• RADIUS

Which of the following authentication mechanisms provides cryptography-based authentication using a small computer chip that stores the user’s personal information for identification?

• Smart card authentication
• Two-factor authentication
• Single sign-on (SSO) authentication
• Password authentication