1Z0-1151-25 is a cross-cloud design and responsibility-boundary exam. Strong answers usually come from deciding which control, network path, identity layer, or data boundary should stay where instead of assuming one cloud should absorb every responsibility.
Data locality: The architectural and governance concern about where data is stored, processed, or replicated.
Boundary service: A service or control that defines where one environment, trust zone, or cloud platform hands off to another.
What this guide emphasizes
multicloud identity, network, and governance boundaries
OCI networking and FastConnect in cross-cloud designs
workload placement, service-fit, and interoperability judgment
resilience, recovery, and operational visibility across provider boundaries
What strong answers usually do
classify the issue first as identity, connectivity, data placement, or operational control
keep shared responsibilities explicit instead of assuming provider boundaries disappear
choose the narrowest inter-cloud connection and trust model that still satisfies the requirement
prefer architectures that preserve auditability, recovery paths, and clear ownership