Each PC and IP phone in your network is connected to a switch using the same port. All incoming data traffic is untagged and belongs to the v10 VLAN, while traffic coming from the IP phones is tagged with a VLAN value of 20 and should belong to the v20 VLAN on your switch.
In this scenario, which statement is correct?
For handling traffic from IP phones (which is tagged with a VLAN value) and separating it from untagged traffic (usually from PCs), enabling the voice VLAN feature on the incoming interfaces is the correct approach. This configuration allows the switch to recognize and prioritize voice traffic by assigning the v20 VLAN specifically for it, ensuring appropriate handling and quality of service for voice communications.
C. You must enable LLDP-MED on the incoming interfaces and assign the v20 VLAN. Explanation: LLDP-MED (Link Layer Discovery Protocol - Media Endpoint Discovery) is used to automatically discover and configure network devices, especially in the context of IP phones. In this scenario, enabling LLDP-MED on the incoming interfaces and assigning the v20 VLAN will help the switch identify and separate the tagged voice traffic (from the IP phones) and untagged data traffic (from the PCs).
C. You must enable LLDP-MED on the incoming interfaces and assign the v20 VLAN.
C is correct