Question 930
A guest SSID is connected to a network that allows lateral traffic into staff database servers. Which first diagnostic check is most useful before changing the network?
Explanation
Correct Answer
This check collects evidence at the layer implicated by the symptom: the guest role's effective firewall policy permits unintended east-west and internal traffic. Examine the evidence before choosing the corrective change.
Incorrect Answers
This would be a reasonable check when a campus uses an unencrypted RADIUS configuration across a transport network where message content protection is mandated, but is less direct for the issue at hand: the guest role's effective firewall policy permits unintended east-west and internal traffic.
This would be a reasonable check when a printer is allowed into a protected VLAN solely because its hostname matches an approved naming prefix, but is less direct for the issue at hand: the guest role's effective firewall policy permits unintended east-west and internal traffic.
This would be a reasonable check when a branch firewall permits internal IoT devices to initiate sessions to the NAC administration console by a legacy broad access rule, but is less direct for the issue at hand: the guest role's effective firewall policy permits unintended east-west and internal traffic.