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As a network administrator, you issue


As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:()

  • A using DHCP snooping
  • B snooping the incoming 802.1Q VLAN tag
  • C using CDP
  • D snooping the CoS marking on the incoming frame
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