Understanding Authentication Protocols

The video tutorial covers various authentication methods, starting with local authentication, which involves storing credentials on individual devices. It then moves to centralized authentication systems like RADIUS, TACACS, LDAP, and Kerberos, explaining their functionalities and applications. The tutorial also discusses additional authentication factors, such as hardware tokens and biometrics, and introduces 802.1X and EAP for network access control.

What is a key characteristic of local authentication?

• It uses biometric data.

• It requires a hardware token.

• Credentials are stored on the local device.

• Credentials are stored on a central server.

Why might a company use a centralized authentication server?

• To simplify the management of usernames and passwords.

• To reduce the cost of hardware tokens.

• To eliminate the need for passwords.

• To ensure all devices are connected to the internet.

Which of the following is an example of an additional authentication factor?

• Username

• Password

• Biometric data

• IP address

What is RADIUS primarily used for?

• Local device management

• Encrypting data

• Storing biometric data

• Centralized authentication

Which protocol is known for providing single sign-on functionality?

• LDAP

• TACACS

• Kerberos

• RADIUS

What does TACACS stand for?

• Terminal Access Controller Access Control System

• Transport Access Control and Communication System

• Technical Access Control and Communication System

• Terminal Access Communication and Control System

Which protocol is often used with directory systems like Windows Active Directory?

• RADIUS

• Kerberos

• LDAP

• TACACS

What is a key feature of 802.1X?

• It allows network access without authentication.

• It uses EAP for authentication.

• It does not support centralized authentication.

• It is only used for wireless networks.

What role does EAP play in 802.1X?

• It provides encryption for data.

• It acts as a network firewall.

• It manages network traffic.

• It facilitates authentication.

Which of the following is NOT a protocol mentioned in the video?

• LDAP

• SSL

• TACACS

• RADIUS