The correct XML/YANG data model set is the option that accurately represents the IOS XE interface hierarchy, assigns the IPv4 address to GigabitEthernet2/1/0, and uses the correct prefix length of 27. In model- driven programmability, the payload must match both the selected YANG model schema and the target platform's interface naming conventions. For IOS XE native models, interface configuration is structured under the Cisco native namespace, with interface type and name represented in the schema before IPv4 address elements are applied. The address 10.10.10.10/27 must also support a directly connected host at
10.10.10.1/27, which places both addresses in the same 10.10.10.0/27 subnet. Options that place the address under the wrong interface type, use the wrong namespace, incorrectly represent the mask, or configure the host route rather than the interface are invalid. Option D is the only answer aligned to the IOS XE YANG structure and the requested addressing. Reference topics: IOS XE native YANG, NETCONF XML payloads, interface configuration, IPv4 prefix length, model-driven programmability.