Question 20
A central services VLAN is on the approved trunk but a new access port uses a mismatched untagged VLAN. Which immediate engineering change most directly addresses this issue?
Explanation
Correct Answer
The underlying issue is that the endpoint is placed into a different broadcast domain than the required service. This intervention addresses that cause directly. A useful result to confirm is: the endpoint obtains a lease from the expected subnet and retains only its assigned VLAN.
Incorrect Answers
This is suited to a different condition, such as when a new branch switch powers on but remains absent from Central after its management VLAN is provisioned. The reported fault instead arises because the endpoint is placed into a different broadcast domain than the required service.
This is suited to a different condition, such as when a VoIP handset receives power from an access switch but lands in the data VLAN rather than its intended voice VLAN. The reported fault instead arises because the endpoint is placed into a different broadcast domain than the required service.
This is suited to a different condition, such as when an AP has a healthy uplink but reports that clock synchronization cannot reach a time source, breaking certificate-based provisioning. The reported fault instead arises because the endpoint is placed into a different broadcast domain than the required service.