Question 400
At Research Hub, a guest WLAN client receives an employee-network IP address after SSID mapping changes. What targeted evidence should the network engineer collect first?
Explanation
Correct Answer
For Research Hub, the decisive mechanism is Wrong VLAN mapping. WLAN-to-wired mapping errors can appear as a DHCP or authorization defect. Inspect client effective VLAN AP forward mode tagged frames and DHCP lease is the most direct way to isolate this particular failure before making a change.
Incorrect Answers
This is relevant to RADIUS Access-Reject root cause, where an explicit RADIUS reject can come from credential validation or authorization policy In the Research Hub case, Those observations could be normal while the stated fault persists. The specific mechanism is wLAN-to-wired mapping errors can appear as a DHCP or authorization defect
This is relevant to Physical-link errors, where layer 1/2 corruption can degrade packets even though link status remains up In the Research Hub case, Those observations could be normal while the stated fault persists. The specific mechanism is wLAN-to-wired mapping errors can appear as a DHCP or authorization defect
This is relevant to DHCP address-acquisition failure, where network authorization and DHCP allocation are separate stages requiring their own diagnostics In the Research Hub case, Those observations could be normal while the stated fault persists. The specific mechanism is wLAN-to-wired mapping errors can appear as a DHCP or authorization defect