Which device can serve as a network access server?
- router
- switch
- firewall
- access point
- router, switch, firewall, and access point
Explanation: In a centralized AAA (Authentication, Authorization, and Accounting) architecture, any network device that provides access to the network—whether for administrative access (CLI) or remote user access (VPN/Network)—acts as a network access server (NAS). The sources specifically mention that these security features and protocols can be deployed on routers, Layer 3 switches, and firewalls. Additionally, wireless access points are frequently integrated into these AAA workflows for client onboarding.
Related exam: Checkpoint Exam: MPLS and VPN Technologies
