A facilities brief describes three separate buildings in one region, each with independent power, networking, and cooling. Which Azure concept matches that description?
Select an answer to reveal the explanation.
Short Explanation
Three buildings, each with its own power and network lifelines — that mental picture is availability zones. They are failure domains inside one region, not a paperwork rename. Independent guts, same regional neighborhood.
Full Explanation
Three separate buildings in one region, each with independent power, networking, and cooling, matches availability zones as independent failure domains within a region. That facilities brief language is essentially the physical story zones tell: colocated regional capacity with deliberate isolation so one building's infrastructure failure does not equal total regional loss for zone-aware deployments.
A single resource lock on a storage account is a delete/change-protection setting, not three buildings. A management group hierarchy organizes subscriptions for governance and has no physical datacenter meaning by itself. Renaming an Azure AD (Microsoft Entra ID) tenant does not relocate datacenter power feeds or create failure domains.
Exam caveat: describing three buildings is the teaching model; actual zone counts and service behaviors differ by region, so architecture decisions must follow current regional capabilities, not a fixed "always three" assumption for every geography.
Operational check: map critical municipal resources to zone-redundant configurations, confirm independent failure-domain expectations with the service's SLA documentation, and ensure monitoring alerts distinguish a single-zone impairment from a full regional outage.