哪種配置會告訴交換機部件發送 Cisco Discovery Protocol 數據包,以配置連接的 Cisco IP 電話信任從連接到 Cisco IP 電話接入端口的設備接收的標記流量?
A. outer# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos trust extend
B. outer# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos trust extend cos 3
C. outer# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos trust extend cos 5
D. outer# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos extend trust