az-900 practice test Advanced Practice Exam: Hard Questions 2025

A multinational corporation is designing a disaster recovery strategy for their Azure-based application. They require the application to automatically failover to a secondary region with minimal data loss (RPO < 1 minute) and minimal downtime (RTO < 5 minutes), while optimizing costs during normal operations. The application uses Azure SQL Database, Azure App Service, and Azure Storage. Which combination of services and configurations best meets these requirements?

An enterprise has deployed resources across multiple Azure subscriptions organized under a management group hierarchy. They need to enforce a policy that prevents the creation of resources in specific regions for compliance reasons, but must allow exceptions for a specific development subscription. Security team requires audit logs of all policy violations and exceptions. What is the most effective approach to implement this requirement?

A software company is migrating a stateful application to Azure that requires consistent low latency (< 10ms) between application servers and database servers, with predictable network performance. The application experiences variable load throughout the day and must scale horizontally. Database transactions require high IOPS (> 20,000) with minimal latency. Which architectural approach best satisfies these requirements?

A financial services company must ensure their Azure resources comply with industry regulations requiring: data residency in specific geographic regions, encryption of data at rest and in transit, immutable audit logs retained for 7 years, and quarterly compliance reporting. They operate across 15 Azure subscriptions. What combination of Azure services provides the most comprehensive and efficient solution?

An organization operates a hybrid cloud environment with on-premises datacenters connected to Azure. They need to implement a solution that allows seamless identity management where users authenticate once and access both on-premises and Azure resources, while ensuring authentication requests for Azure services don't traverse the on-premises network to minimize latency. Password hash synchronization is not permitted due to security policies. What solution should they implement?

A company is designing a cost optimization strategy for their Azure environment. They have identified that many development and test virtual machines run 24/7 but are only actively used during business hours (8 hours/day, 5 days/week). Production workloads must remain highly available. The finance team requires detailed cost allocation to specific departments and projects, with monthly chargeback reports. Which combination of approaches provides optimal cost reduction while meeting operational requirements?

A healthcare organization must architect a solution in Azure that processes sensitive patient data while maintaining HIPAA compliance. The solution must ensure that patient data never leaves specific geographic boundaries, maintain complete audit trails of all data access, implement encryption both at rest and in transit with customer-controlled keys, and ensure that Microsoft support personnel cannot access patient data even during support incidents. Which architectural approach fully addresses these requirements?

A global e-commerce company experiences highly variable traffic patterns with predictable spikes during seasonal sales events (10x normal load) and unpredictable viral marketing events. Their application architecture includes a web tier, API tier, and database tier. They need to optimize costs during normal operations while ensuring performance during spikes, and they want to minimize manual intervention. What architectural approach best balances cost optimization with performance requirements?

An enterprise is implementing a governance framework across 50 Azure subscriptions organized in a management group hierarchy: Root > Production > (US-Production, EU-Production) and Root > Non-Production > (Development, Testing). They need to enforce that all Production resources have specific tags (CostCenter, Owner, Environment), prevent deletion of production resources without approval, ensure diagnostic logs are enabled on all resources, and allow the development teams maximum flexibility. What is the most effective governance implementation strategy?

A company is migrating a legacy three-tier application to Azure. The application has a presentation layer that serves 100,000 concurrent users globally, a business logic layer that performs complex calculations requiring GPU acceleration, and a data layer with 5TB of relational data requiring complex transactions. The application must achieve 99.95% availability SLA, RPO of 4 hours, RTO of 1 hour, and minimize latency for global users. Which architectural design best meets these requirements?