1Z0-1072 · Question #203
Which two resources are availability domain constructs? (Choose two.)
The correct answer is C. Block Volume D. Compute Instance. https://docs.cloud.oracle.com/iaas/Content/General/Concepts/regions.htm#one
Question
Which two resources are availability domain constructs? (Choose two.)
Options
- AVCN
- BGroups
- CBlock Volume
- DCompute Instance
- EObject Storage
How the community answered
(57 responses)- A7% (4)
- B14% (8)
- C75% (43)
- E4% (2)
Explanation
https://docs.cloud.oracle.com/iaas/Content/General/Concepts/regions.htm#one
Topics
Community Discussion
5
Fatima Z.Jun 9, 2026Your answers are C and D, Block Volume and Compute Instance, and here is the sticky hook: think "BC stays local," where B is Block Volume and C is Compute, both chained to one availability domain like a bouncer who never leaves his specific club. VCN is regional, Object Storage is regional, and Groups are tenancy-level IAM constructs, so none of those three even care which AD you are in.
Petros O.May 30, 2026Block volumes and compute instances live inside a specific AD the same way a managed server lives inside a specific domain, you cannot just float them across boundaries without explicit replication or migration steps, so if your AD goes dark you feel it immediately. Anyone else notice they try to trick you with Object Storage here, since it looks local but Oracle actually makes it regional under the hood, so what is your understanding of how that regional abstraction actually works at the storage layer?
Fatima Z.Jun 2, 2026Think ROAD, Replicated Over All Domains, because under that clean regional endpoint Object Storage is quietly striping your bits across every AD in the region using erasure coding, so when one AD goes dark your bucket just keeps serving while your block volumes are sitting there weeping.
Prof. SaraJun 14, 2026C and D are your correct picks here, and this question maps directly to the OCI Architecture domain on the blueprint, so do not skip it. The key mental model is to sort every OCI resource into one of three buckets: tenancy-wide (like Groups, which live in IAM and have no regional affiliation), regional (VCN and Object Storage both span all availability domains in a region automatically), and availability-domain-specific, which is where Block Volumes and Compute Instances live. A Block Volume is physically tied to the AD where it was provisioned, and a Compute Instance is always launched into one specific AD, which is exactly what makes them AD constructs. A fast mnemonic is CIVIC, Compute Instance and Volume are In a specific Cell, where Cell stands for availability domain. If your instance goes down and you need to restore it in a different AD, you cannot simply attach the same Block Volume across that boundary without a backup-and-restore or cross-AD clone operation, and that real-world constraint is the exam's way of testing whether you truly understand the scoping model.
Fatima Z.Jun 16, 2026Love CIVIC but pin an S on the end for Subnet because AD-specific subnets are a classic trap question on the blueprint, making it CIVICS, Compute Instance, Volume, In a specific Cell, plus Subnet, and now your brain latches onto a word it already knows from 7th grade civics class.