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350-401 Practice Question: Which three statements about Cisco AP join…
Which three statements about Cisco AP join process and discovery are true? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
An AP can discover a WLC using DHCP option 43, which provides the WLC management IP address.
APs discover WLCs via DHCP option 43, DNS, or local subnet broadcast. They use CAPWAP for control and data. The AP must have a valid certificate for DTLS. APs can be pre-configured with a primary WLC name. APs do not use SNMP to find WLCs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
An AP can discover a WLC using DHCP option 43, which provides the WLC management IP address.
Why this is correct
Correct because DHCP option 43 is a standard method for APs to learn the WLC IP address during boot.
- ✓
An AP can discover a WLC by sending a DNS query for 'CISCO-CAPWAP-CONTROLLER.localdomain'.
Why this is correct
Correct because APs use DNS resolution for the hostname 'CISCO-CAPWAP-CONTROLLER' to find a WLC.
- ✓
An AP must have a valid certificate installed to establish a DTLS session with the WLC.
Why this is correct
Correct because DTLS encryption between AP and WLC requires certificate-based authentication for secure control and data planes.
- ✗
An AP can discover a WLC by sending an SNMP broadcast to the local subnet.
Why it's wrong here
Incorrect because APs use CAPWAP discovery messages (broadcast or unicast), not SNMP, to find WLCs.
- ✗
An AP can be manually configured with the primary WLC name via the AP CLI before joining.
Why it's wrong here
Incorrect because APs do not have a CLI for such configuration; the primary WLC is typically set from the WLC side or via a pre-shared key in the AP image.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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