When configuring VLANs, which of the following is NOT a characteristic of a trunk port?

A trunk port is specifically designed to carry traffic for multiple VLANs, and it achieves this through tagging frames with VLAN identifiers. This tagging allows switches to differentiate which frames belong to which VLAN as they traverse the trunk link.

Trunk ports typically connect to other switches or devices that also support VLANs, facilitating the communication of multiple VLANs across a single physical link.

When it comes to untagged frames, trunk ports operate under the expectation that the frames will usually be tagged to identify their corresponding VLANs. While it is possible for a trunk port to transmit untagged frames under certain circumstances—such as in the case of a native VLAN—this behavior is not a defining characteristic of trunk ports. Therefore, untagged frames are not a standard feature or characteristic of trunk ports, which is reflective of why this option stands out in the context of VLAN configurations.