350-401 Question #801: Real Exam Question with Answer & Explanation

The correct answer is B: broadcasting on the local subnet. Access points discover a wireless LAN controller using methods such as broadcasting CAPWAP discovery messages on the local subnet and by retrieving WLC IP addresses via DHCP Option 43.

Submitted by priya_blr· Mar 6, 2026

Question

Which two methods are used by an AP that is typing to discover a wireless LAN controller? (Choose two.)

Options

ACisco Discovery Protocol neighbour
Bbroadcasting on the local subnet
CDNS lookup cisco-DNA-PRIMARY.localdomain
DDHCP Option 43
Equerying other APs

Explanation

Access points discover a wireless LAN controller using methods such as broadcasting CAPWAP discovery messages on the local subnet and by retrieving WLC IP addresses via DHCP Option 43.

Common mistakes.

A. While Cisco Discovery Protocol (CDP) can help an AP identify its directly connected switch, it is not a direct method for an AP to discover and join a Wireless LAN Controller.
C. DNS lookup is a valid method for WLC discovery, but the specific domain name used by CAPWAP APs is cisco-capwap-controller.localdomain, not cisco-DNA-PRIMARY.localdomain.
E. An AP typically discovers the WLC directly through various mechanisms; it does not query other APs to find the controller.

Concept tested. Cisco AP WLC discovery methods

Reference. https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/m_ap-registration.html

Topics

#AP discovery#WLC discovery#DHCP Option 43

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