radius or wpa2 error? – comptia network+ [closed]

Im taking the COMPTIA Network+ exam on thursday and have this practice question I dont understand the difference:

Users connecting to an SSID appear to be unable to authenticate to the captive portal. Which of the following is the cause of this issue?
A. WPA2 security key
B. SSL certificates
Correct Answer: D

My question is how do you know it is a RADIUS problem and not a bad wpa2 password


Bad wpa2 password wouldn’t let you connect to hotspot which is a prerequisite to see the captive portal. Additionally captive portal usually means the wifi network is open – meaning no wep/wpa/wpa2 at all.

Source : Link , Question Author : billnyeguy , Answer Author : Tomek

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