What should an architect use as a guideline to determine when to define another VLAN for wireless devices?
A. the WLAN or SSID, with a different VLAN for each SSID
B. the AP deployment, with a different VLAN for each AP that is deployed
C. the number of devices, with a different VLAN for each 250 devices
D. the employee roles, with a different VLAN for each role or department
A is the best answer
Ans D is incorrect since you may have multiple roles sharing the same resources which you may wish to group in the same subnet.
D is correct.
Answer is A