When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?()

A . by snooping the CoS marking on the incoming frames B . by using RTP hello messages between the switch port and the Cisco IP Phone C . by using CDP D . by using DHCP snooping E . by snooping the incoming 802.1Q VLAN tag

时间:2022-11-07 18:15:56 所属题库:CCNP(642-067)题库

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