In a municipal captive-portal lab on a rogue AP host, why is an HTTP (web) service typically required?
Select an answer to reveal the explanation.
Short Explanation
Captive portals are basically pushy websites. Without a web service answering on the rogue host, there is no page for the library laptop to see. DHCP gets you an address; HTTP gives you the form.
Full Explanation
Captive-portal style assessments present an HTML login or accept page to associated clients. That presentation depends on a web service (and usually redirection logic) on the rogue AP host or companion system. DHCP addressing and DNS tricks enable reachability, but they do not replace the HTTP listener that serves the page. RADIUS is not required for a simple open rogue portal lab.