You are reviewing the configuration of an aggregation switch and have noticed that VLAN 1...

Comprehensive Detailed Explanation:

VLAN 1 is often configured as the native VLAN on interfaces to support Zero Touch Provisioning (ZTP). During ZTP, devices communicate over VLAN 1 by default to download their configuration and updates.

LLDP and UBT are unrelated to native VLAN configuration for provisioning.

MSTP relates to spanning tree but does not dictate native VLAN usage.

Thus, VLAN 1 as native VLAN facilitates ZTP processes.