Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) — Question 188

An engineer must configure switch port 5/1 to send CDP packets to configure an attached Cisco IP phone to trust tagged traffic on its access port. Which command is required to complete the configuration?

Router# configure terminal -
Router(config)# interface gigabitethernet 5/1
Router(config-if)# description Cube E42.421-5965

Answer options

Correct answer: C

Explanation

The correct command, 'platform qos trust extend', is necessary to allow the switch port to trust the tagged traffic from the IP phone. Options A and D specify a CoS value, which is not required for this particular configuration, while option B is incomplete and does not specify the 'extend' action needed.