Which action is taken by the phone?

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

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

Answer: B

Explanation:

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