Which action is taken by the phone?

A Cisco IP phone receive untagged data traffic from an attached PC.

Which action is taken by the phone?
A . It allows the traffic to pass through unchanged.
B . It drops the traffic.
C . It tags the traffic with the default VLA
E . It tags the traffic with the native VLA

View Answer

Answer: A

Explanation:

Untagged traffic from the device attached to the Cisco IP Phone passes through the phone unchanged, regardless of the trust state of the access port on the phone.

Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960x/software/15-0_2_EX/vlan/configuration_guide/b_vlan_152ex_2960-x_cg/b_vlan_152ex_2960-x_cg_chapter_0110.pdf