A. Deploy all web servers into one Availability Domain and behind a public load balancer, and deploy two single-node OCI database systems in the same Availability Domain with Data Guard enabled.
B. Deploy all web servers into multiple Availability Domains and behind a public load balancer, and deploy two single-node OCI database systems across two Availability Domains with Data Guard enabled.
C. Deploy all web servers into multiple Availability Domains and behind a private load balancer, and deploy two single-node OCI database systems across two Availability Domains with Data Guard enabled.
D. Deploy all web servers into one Availability Domain, and deploy a single-node OCI database system into a different Availability Domain.
Answer: D -
But maybe B?
See: https://cloud.oracle.com/opc/iaas/whitepapers/best-practices-deploying-ha-architecture-oci.pdf
Search for “web server” on page five.
Working