Azure AZ-900 Practice Test

AZ-900 practice test: what's covered

• Azure Fundamentals

Free AZ-900 sample questions

1. A startup wants to launch a web app without buying servers and pay only for the compute it actually consumes each month. Which cloud benefit does this primarily describe?

   • A. Consumption-based pricing that converts large upfront hardware purchases into a variable operational expense
   • B. A fixed annual licensing fee paid in advance regardless of how much capacity is used
   • C. Mandatory three-year reserved capacity contracts that guarantee the lowest possible rate
   • D. Free unlimited compute provided to every new subscription with no usage metering
   Show answer

   Correct: A. Cloud uses a pay-as-you-go, consumption-based model that shifts spending from CapEx to OpEx, so the startup pays only for what it uses. A fixed annual fee and three-year reservations are not what 'pay only for what you consume' means, and the cloud is never free unlimited compute because all usage is metered and billed.

2. Your team deploys an Azure VM and is responsible for patching the guest OS, installing middleware, and managing the application, while Microsoft manages the physical hardware and hypervisor. Which cloud service model are you using?

   • A. Infrastructure as a Service, where you manage everything from the operating system upward
   • B. Platform as a Service, where the provider also patches and manages the operating system
   • C. Software as a Service, where you only configure settings in a finished application
   • D. Function as a Service, where you supply code and the platform manages all servers
   Show answer

   Correct: A. Running a VM and patching its guest OS is the IaaS responsibility split: the provider handles hardware and virtualization while you own the OS and up. It is not PaaS because in PaaS Azure patches the OS for you, not SaaS because you are not just consuming a finished app, and not FaaS because you manage a full VM rather than just code.

3. A retailer keeps customer records on-premises for regulatory reasons but bursts to Azure during seasonal traffic spikes. Which characteristics describe this hybrid cloud approach? (Choose TWO)

   • A. Sensitive workloads can remain on private infrastructure while public cloud handles overflow demand
   • B. It combines public cloud resources with on-premises or private datacenters using orchestration
   • C. All workloads must run exclusively in a single public cloud region with no local footprint
   • D. The model eliminates any need for connectivity between the corporate network and Azure
   • E. It forces every application to be rewritten as a serverless function before deployment
   Show answer

   Correct: A and B. Hybrid cloud combines public and private/on-premises resources with orchestration, letting regulated data stay local while public cloud absorbs bursts. Running everything in one public region is pure public cloud, not hybrid; hybrid actually requires connectivity such as VPN or ExpressRoute rather than eliminating it; and it does not force a rewrite to serverless functions.

4. During a budget review, a manager asks how moving to Azure changes capital expenditure. How should you describe the financial shift the cloud enables?

   • A. Spending moves from upfront capital purchases of hardware toward metered operational costs based on usage
   • B. Spending stays as capital expenditure because customers still buy and own the physical datacenter servers
   • C. All costs disappear entirely once workloads are migrated to a public cloud provider
   • D. Operational costs are eliminated because cloud providers absorb every customer expense for free
   Show answer

   Correct: A. The cloud converts CapEx (buying hardware upfront) into OpEx (paying for metered consumption), aligning cost with demand. Customers do not buy the physical servers in a public cloud, costs do not disappear since usage is billed, and operational costs are not eliminated because consumption is exactly what you pay for.

5. An architect needs to keep a service running through a single datacenter or rack failure within one region, and separately needs a plan to recover after an entire region goes down. Which statement correctly distinguishes these two goals?

   • A. High availability protects against local failures within a region, whereas disaster recovery restores service after a regional outage
   • B. High availability and disaster recovery are identical because both simply mean keeping more than one copy of data
   • C. Disaster recovery only addresses single-server failures, whereas high availability handles full regional outages
   • D. Both terms refer exclusively to backing up data to tape stored in an offsite physical vault
   Show answer

   Correct: A. HA addresses localized failures such as a server or availability zone within a region, while DR addresses recovery from a catastrophic regional event. They are not identical, the roles are not reversed because DR is the region-level concern, and neither is limited to offsite tape backup since both rely on cloud redundancy and failover.

Last updated: 2026-10-19

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