Oracle AI Database@Azure has specific client-subnet IP consumption requirements that must be considered during capacity planning. For the delegated client subnet, 13 IP addresses are reserved for networking services regardless of the number of VM Clusters deployed in that subnet .

Microsoft's Oracle AI Database@Azure networking documentation defines these 13 addresses as the first four addresses, the ninth through sixteenth addresses, and the final address of the subnet. Applied to 10.0.0.0/24, the reserved ranges are therefore 10.0.0.0–10.0.0.3, 10.0.0.8–10.0.0.15, and 10.0.0.255.

These platform reservations must be counted in addition to addresses needed for VM nodes and SCAN addresses. For example, every VM consumes multiple client-network addresses, and each VM Cluster requires SCAN addresses. Failing to account for the reserved block can therefore result in insufficient address capacity even when a subnet initially appears large enough.

Only option B precisely represents the documented reserved address positions.

Study Guide reference: Configure Oracle AI Database@Azure Networking — delegated subnet planning, client subnet sizing, reserved networking-service IP addresses and Exadata VM Cluster capacity.

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