A Network Anchor provides the cross-cloud network integration context used by supported Oracle AI Database@Azure services, including important DNS-resolution capabilities between Azure and OCI .

For inbound DNS resolution toward Azure, Oracle's Network Control Plane can create an OCI forwarding DNS endpoint and associated forwarding rules. For Azure-to-OCI resolution, the service can create an OCI listening DNS endpoint and expose its address through the Network Anchor so Azure DNS infrastructure or on-premises DNS servers can forward queries for Oracle database namespaces.

When both directions are configured, the architecture provides bidirectional private DNS resolution between Azure and OCI environments. Network Anchors can also participate in private-zone synchronization depending on the database service and DNS configuration.

The Network Anchor is not a cryptographic key store; TDE keys belong in Oracle Wallet, OCI Vault, Oracle Key Vault, or Azure Key Vault. Nor does the Network Anchor create Azure Availability Zones/OCI Availability Domains or mandate an IPsec-only intercloud transport mechanism.

Therefore, B is correct.

Study Guide reference: Configure Oracle AI Database@Azure Networking — Network Anchors, DNS listening endpoints and forwarding endpoints.