Unknown devices freely attach to the campus LAN at a municipal operations center. Which control best restricts network admission?
Select an answer to reveal the explanation.
Short Explanation
If any stranger’s laptop can just plug in and join, your LAN is a free parking lot. NAC asks 'who are you and are you healthy?' before handing out real network keys—and parks unknowns in a side lot.
Full Explanation
Network Access Control enforces authentication and often posture assessment before granting access to production segments. Unknown or noncompliant devices can be denied, restricted, or quarantined. Open ports without NAC expand the attack surface for rogue devices; DHCP reservations or posters alone do not provide admission control.