AZ-900 Practice Questions
Prepare for AZ-900 with more than an answer.
- Exam fee
- $99 USD
- Level
- Beginner
- Valid for
- No expiration
Domains covered on the exam 3
- Describe cloud concepts
- Describe Azure architecture and services
- Describe Azure management and governance
- 1
A financial services firm is migrating a legacy on-premises application to Azure. The application processes high-volume transaction data that fluctuates wildly during market hours but is nearly dormant at night. The CIO wants to minimize operational costs by paying only for the exact compute resources used during execution, without provisioning a fixed-capacity server. Which compute model should you recommend?
Show answer details
Correct answer: B
Serverless computing (like Azure Functions) is the optimal choice for event-driven workloads with variable traffic. It abstracts the underlying infrastructure and charges only for the time code is actually running, perfectly matching the requirement to pay only for execution time.
- 2
You are designing a hybrid cloud strategy for a healthcare organization. They have strict data residency requirements necessitating that patient records remain on local physical servers within their own facility, while the web front-end application runs in Azure to handle global traffic. Which cloud deployment model does this scenario represent?
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Correct answer: B
A Hybrid Cloud combines a public cloud (Azure) with a private cloud or on-premises infrastructure (local physical servers). This allows data and applications to be shared between them, satisfying the requirement for local data residency while utilizing public cloud scale.
- 3
A startup is deploying a mission-critical database application to Azure. The application cannot tolerate any downtime, even in the event of a complete datacenter failure within a region. However, data must remain within the same geographic boundary for compliance. Which availability strategy should you implement?
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Correct answer: B
Availability Zones are physically separate datacenters within the same Azure region. Deploying across multiple zones protects against the failure of a single datacenter (power, cooling, networking) while keeping data within the region.
- 4
You are managing a complex environment with resources spread across on-premises datacenters, Azure, and Amazon Web Services (AWS). You need a unified way to govern, organize, and inventory these disparate resources using the Azure Portal. Which service should you use?
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Correct answer: B
Azure Arc extends the Azure control plane to on-premises, multi-cloud, and edge environments. It allows you to project non-Azure resources (like servers in AWS or on-prem) into Azure Resource Manager, enabling unified governance and organization.
- 5
A developer needs to prevent a critical production resource group from being accidentally deleted by other administrators. However, the administrators still need to be able to modify resources inside the group, such as restarting VMs or updating tags. Which configuration should you apply?
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Correct answer: B
A CanNotDelete lock prevents the resource (and its children via inheritance) from being deleted, but allows authorized users to read and modify the resources. A ReadOnly lock would prevent modifications, which contradicts the requirement.
- 6
Your company has an on-premises network with numerous servers, which they intend to migrate to Azure.
You have been tasked with devising a plan that allows for the availability of a few of the servers, in the event that one of the Azure data centers becomes unavailable for a lengthy interval.
Solution: You should include elasticity in your plan.
Does the solution meet the goal?Show answer details
Correct answer: B
No, deploying servers in a single Azure region does not provide protection against data center failures. For high availability during data center outages, you must deploy virtual machines across multiple Azure regions or use Availability Zones within a region. Single region deployment leaves workloads vulnerable to regional outages, natural disasters, or infrastructure failures affecting the entire region.
- 7
Your company has an on-premises network with numerous servers, which they intend to migrate to Azure.
You have been tasked with devising a plan that allows for the availability of a few of the servers, in the event that one of the Azure data centers becomes unavailable for a lengthy interval.Solution: You should include scalability in your plan.
Does the solution meet the goal?Show answer details
Correct answer: B
No, using Availability Sets alone does not provide adequate protection against data center failures. While Availability Sets protect against hardware failures within a single datacenter by distributing VMs across fault and update domains, they do not protect against entire datacenter outages. For data center level protection, you need multiple Azure regions or Availability Zones which are physically separated datacenters.
- 8
Your company has an on-premises network with numerous servers, which they intend to migrate to Azure.
You have been tasked with devising a plan that allows for the availability of a few of the servers, in the event that one of the Azure data centers becomes unavailable for a lengthy interval.
Solution: You should include fault tolerance in your plan.
Does the solution meet the goal?Show answer details
Correct answer: A
Deploying virtual machines across multiple Azure regions provides high availability and disaster recovery protection against data center outages. Azure regions are geographically separated with independent power, cooling, and networking infrastructure, ensuring that if one data center becomes unavailable, your servers remain accessible from other regions. This architecture meets the requirement for server availability during data center failures.
