Which of the following is a type of NAC that uses a set of policies to allow or deny access to the network based on the user's identity?

Rationale

802.1X is a type of NAC that uses a set of policies to allow or deny access to the network based on the user's identity.

802.1X operates as a network access control (NAC) protocol that authenticates users before granting them access to the network. It employs policies to manage user access based on their identity, ensuring that only authorized users can connect.

A (Standard ACL) YOUR ANSWER

Standard Access Control Lists (ACLs) are used primarily for filtering traffic based on source IP addresses. They do not provide identity-based access control and lack the necessary authentication mechanisms to validate user identities before network access is granted.

B (MAC filtering) YOUR ANSWER

MAC filtering restricts network access based on the unique MAC addresses of devices. While it can limit access to specific devices, it does not authenticate users based on their identity and does not use policies that adapt to individual user credentials or roles.

C (802.1X) CORRECT

802.1X is a network access control protocol that verifies user identity through authentication before allowing access to the network. It utilizes policies to manage access rights, making it effective for environments requiring secure user authentication and network access control.

D (SSO) YOUR ANSWER

Single Sign-On (SSO) is an authentication process that allows a user to access multiple applications with one set of login credentials. While it simplifies user authentication, it does not function as a network access control mechanism and does not manage access to the network itself.

Conclusion

802.1X stands out as a crucial NAC protocol that authenticates users and employs policy-driven access controls based on identity. Unlike other options, which either focus on device identifiers, traffic filtering, or application-level authentication, 802.1X directly addresses network access by validating user identities before granting permission to connect. This feature is essential for maintaining network security in various environments.

Which of the following is a type of NAC that uses a set of policies to allow or deny access to the network based on the user's identity?

802.1X is a type of NAC that uses a set of policies to allow or deny access to the network based on the user's identity.

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