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350-401 · Question #250
350-401 Question #250: Real Exam Question with Answer & Explanation
The correct answer is B: All wireless clients. For PSK authentication without an ISE server, all wireless clients and all Access Points/Wireless LAN Controllers must be configured with the identical pre-shared key string.
Submitted by ricky.ec· Mar 6, 2026Security
Question
When PSK authentication is used on a WLAN, without the use of an ISE server, which of the following devices must be configured with the key string? (Choose two.)
Options
- AOne wireless client (each with a unique key string)
- BAll wireless clients
- CAll APs and WLCs
- DA RADIUS server
Explanation
For PSK authentication without an ISE server, all wireless clients and all Access Points/Wireless LAN Controllers must be configured with the identical pre-shared key string.
Common mistakes.
- A. Each client uses the same key string for a given PSK WLAN, not a unique one; unique keys are typically associated with 802.1X/RADIUS authentication.
- D. A RADIUS server is used for 802.1X authentication, not for simple PSK authentication, especially when the question explicitly excludes an ISE server.
Concept tested. PSK authentication configuration
Topics
#PSK authentication#WLAN security#WLC configuration#Wireless client configuration
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