VoIP 電話はポートに接続されていますが、通話を受信できません。この問題に対処するには、ポート上で次のどれを実行する必要がありますか?
正解:C
This is because the voice VLAN is a special VLAN that is used to separate the voice traffic from the data traffic on a switch port. The voice VLAN allows the VoIP phone to communicate with the voice server and receive calls. The voice VLAN is usually configured with a higher priority than the data VLAN to ensure the quality of service for the voice traffic. The voice VLAN is tagged with a VLAN ID that is different from the data VLAN ID. The switch port must be configured to tag the traffic to the voice VLAN, either manually or automatically using protocols such as CDP or LLDP. The source of this answer is the Cisco ENCOR v1.1 course, module 3, lesson 3.2: Implementing VLANs and Trunks.