Azure AZ-900 Free Practice Test — 400+ Free Questions for Microsoft Azure Fundamentals 2026

C is correct. Scalability means the ability to handle increased load, and elasticity means automatically scaling up AND down in response to demand — paying only for what you use. High availability (A) means keeping services running with minimal downtime. Disaster recovery (B) means recovering from failures. Reliability (D) means a system delivers expected results consistently. The key phrase "automatically" and "paying only for what they use" points directly to elasticity.

B is correct. In the shared responsibility model, SaaS shifts almost all responsibilities to the cloud provider. Microsoft manages the application, infrastructure, physical security, and networks. The customer ALWAYS retains responsibility for: user accounts and access management, the data they store in the service, and device security for devices used to access the service. This is one of the most-tested AZ-900 concepts.

A is correct. Azure App Service is a PaaS offering for hosting web apps, REST APIs, and mobile backends — without managing the server OS or infrastructure. It auto-scales based on demand. Azure Virtual Machines (B) is IaaS — you manage the OS. Azure Virtual Network (C) is for networking, not app hosting. Azure Blob Storage (D) is for storing unstructured data (files, images, videos). The key phrase "without managing server infrastructure" points to PaaS → App Service.

D is correct. Availability Zones are physically separate data centers within a single Azure region, each with independent power, cooling, and networking. Deploying resources across zones protects against a single data center failure. Option A describes Resource Groups (for organization) or Management Groups (for billing/governance). Option B describes Azure CDN or regions. Option C describes environment separation, which is done through subscriptions or resource groups. AZ-900 frequently tests the distinction between regions (geographic areas) and availability zones (separate buildings within a region).

B is correct. The Azure Pricing Calculator estimates costs for specific Azure resources BEFORE deployment. Azure Cost Management (A) tracks and analyzes actual spending AFTER resources are deployed. Azure Advisor (C) provides recommendations for cost, security, performance, and reliability — but not pre-deployment estimates. The TCO Calculator (D) compares total cost of running workloads on-premises vs. Azure — it's for migration decision-making, not individual resource pricing. The exam tests all four of these tools — memorize the distinction.

C is correct. Azure Policy lets you define and enforce rules for Azure resources — including restricting deployments to specific regions. When someone tries to create a resource in a disallowed region, the policy blocks it or flags it for audit. Azure Blueprints (A) packages policies, RBAC, and resource templates — useful for setting up environments but more complex than a simple policy. RBAC (B) controls who can perform actions, not where resources can be deployed. Microsoft Entra ID (D) is identity and access management — it handles user authentication, not resource governance.