Extensible attributes are stored in which location?

• A. NIOS DB.
• B. DHCP server.
• C. DNS server.
• D. External file store.

Answer: (A)

Extensible Attributes are metadata attached to Infoblox objects and managed by the grid’s data store. They live in the NIOS database—the central repository that holds all IPAM, DNS, DHCP data and related attributes. This makes the EA values persist and be accessible across the grid for reporting, filtering, and automation. They aren’t stored in the DHCP service component, the DNS service itself, or in an external file store, which is why the NIOS database is the correct location. In practice, you define Extensible Attributes in the grid and assign values on objects; those values are stored in the NIOS DB and available via the UI and API.