Which TWO of these statements about Azure compute types are true?
Microsoft Certified: Azure Fundamentals (AZ-900), objective architecture-and-services. Azure architecture and services hard
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The options
Choose 2.
Correct Containers on one host share that host's operating system kernel, which is why they start faster and pack more densely than virtual machines
True. Sharing the kernel removes a whole guest operating system per instance, and with it the boot time, the memory footprint and the patching.
Correct Azure Container Instances runs a container without you operating an orchestrator, while Azure Kubernetes Service exists for when you need scheduling, self-healing and rolling upgrades
True. That division is the usual exam discriminator: one container quickly and simply against a fleet that needs orchestrating.
Not correct A container isolates as strongly as a virtual machine, because each container boots its own kernel
False, and the reasoning is exactly backwards. Containers do not boot a kernel; they share the host's. That shared kernel is the reason their isolation boundary is weaker than a virtual machine's.
Not correct An Azure Function can only be started by an incoming HTTP request
False. HTTP is one trigger among many — a timer, a message on a queue, a new blob, or an event from another service will all start a function, which is what makes it event-driven rather than merely a web endpoint.
Not correct Adopting containers removes the need to decide how many instances of a service to run
False. Something still has to decide the replica count and react to load — you, an autoscaler, or an orchestrator you configured. Containers change the packaging, not the capacity question.
Why
Line the three compute types up by what you give away and what you get back. Virtual machines: full control, full responsibility, slowest to start. Containers: shared kernel, portable images, fast and dense, with orchestration as a separate decision — Container Instances for one container, Kubernetes Service for a fleet. Functions: no server in view at all, started by an event, billed by execution.
Where this comes from
- Cited
- Microsoft AZ-900 study guide skill area architecture-and-services.compute-and-networking
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