A containerised platform has grown to thirty services that must be scheduled across nodes, restarted automatically when they fail, upgraded without downtime, and able to find each other by name. Which hosting option matches that list?
Microsoft Certified: Azure Fundamentals (AZ-900), objective architecture-and-services. Azure architecture and services hard
Machine-checked — no person has signed for it. This question was read against the source cited below by an automated pass, which found no contradiction. That is a weaker claim than it sounds: the same kind of process wrote the question, so it can confirm its own mistake.
Treat it as a good draft rather than as settled fact, and read the source below before you rely on it. It is not used in mock exams here — only questions a person has signed for are.
The options
Correct Azure Kubernetes Service
Correct. Scheduling, self-healing, rolling upgrades and service discovery are the definition of orchestration, and Kubernetes Service is the managed orchestrator — Azure runs the control plane, you run the workloads.
Not correct Azure Container Instances
Wrong at this scale. Container Instances is the fastest way to run a single container precisely because there is no orchestrator involved — and an orchestrator is exactly what every requirement on this list is asking for.
Not correct One large virtual machine running all thirty containers, started by a shell script
Wrong. You would be hand-building an orchestrator, badly, and the single machine is a single point of failure for all thirty services at once.
Not correct A single App Service web app holding all thirty images
Wrong. App Service can run containers, but a web app hosts one application, so it cannot model thirty independently scheduled and independently upgraded services.
Why
Both container services are examinable and the split between them is the point. Container Instances runs a container quickly with nothing to manage — burst capacity, a batch job, a simple isolated task. Kubernetes Service exists when you need something to keep deciding where workloads run and to react when they fail. The tell in a question is the vocabulary of orchestration: scheduling, self-healing, rolling upgrades, service discovery.
Where this comes from
- Cited
- Microsoft AZ-900 study guide skill area architecture-and-services.compute-and-networking
Practise this
Reading one question is not practice. The trainer will draw a set from objective architecture-and-services and space the ones you get wrong.
Practise Microsoft Certified: Azure Fundamentals (AZ-900)
More questions on this objective
- An image-resizing routine runs for about two seconds whenever a file lands in a storage container — perhaps two hundred times on a busy day, and not at all on a quiet one. The team wants to pay for the work done and maintain no servers. Which compute option fits? machine-checked
- A fifteen-year-old accounting application needs a kernel-level driver, a scheduled task that edits the registry, and a runtime version nobody supports any more. The business wants it running in Azure this quarter with as few code changes as possible. Where does it go? machine-checked
- A team runs nine small services, each with its own conflicting library versions. They want each one packaged with its dependencies, starting in seconds, several to a host, without a separate operating system per service. Which compute type are they describing? machine-checked
- Which TWO of these statements about Azure compute types are true? machine-checked
- A public website runs on four identical virtual machines behind a load balancer. Traffic triples while a television advert airs and falls back an hour later. The team wants instances added and removed automatically against CPU, all built from one image, with nobody clicking. Which option is designed for that? machine-checked
- Three virtual machines form a quorum-based cluster in a region that has no availability zones. You want them placed so that neither a single rack losing power nor a single batch of planned host maintenance can take all three at once. What do you configure? machine-checked