AZ-300 Cheat Sheet 2026

The 30 highest-yield AZ-300 facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which Azure load balancing option provides health probing and distributes traffic at Layer 4 within a region with support for HA Ports? → Azure Standard Load Balancer
2. Which Azure Storage feature enables storing multiple versions of a blob, protecting against accidental overwrites? → Blob Versioning
3. Which VM extension is used to automatically join an Azure VM to an Active Directory domain at provisioning time? → JsonADDomainExtension
4. Which Azure Traffic Manager routing method directs users to the endpoint with the lowest latency? → Performance
5. Which Azure routing feature allows you to override default system routes and direct traffic through a network virtual appliance (NVA)? → User-Defined Routes (UDR)
6. Which App Service plan tier is required to use VNet Integration for outbound traffic from an Azure Web App? → Standard or higher
7. An organization requires RPO of 15 minutes for an Azure SQL Database. Which replication feature meets this requirement? → Active geo-replication with continuous asynchronous replication
8. Which Azure feature prevents accidental deletion or modification of critical resources by applying a lock? → Resource Locks (CanNotDelete / ReadOnly)
9. Which Azure Monitor feature allows you to define an alert when a metric crosses a threshold, such as CPU > 90% for 5 minutes? → Metric Alerts
10. What is the purpose of a Network Security Group (NSG) in Azure? → Filters inbound and outbound traffic with allow/deny rules based on 5-tuple
11. Which Azure App Service feature enables automatic scaling of app instances based on HTTP request queue length or CPU percentage? → Autoscale
12. Which Azure container service provides a fully managed Kubernetes environment without requiring cluster infrastructure management? → Azure Kubernetes Service (AKS)
13. Which Azure service provides application performance monitoring (APM) with distributed tracing, dependency mapping, and availability testing? → Application Insights
14. What does enabling 'secure transfer required' on an Azure Storage account enforce? → All connections to the storage account must use HTTPS or SMB with encryption
15. In the e-commerce web app, you must access user claims. What should you start with? → Make a Microsoft Graph API call from the ecommerce web app using custom code.
16. Which Azure Storage redundancy option replicates data synchronously across three availability zones within the same region? → ZRS
17. Which feature of Azure Virtual WAN simplifies hub-and-spoke networking at global scale? → Managed virtual hubs with automated routing
18. Which Azure feature allows you to enforce that all subscriptions in a management group comply with organizational policies and RBAC assignments by default? → Azure Blueprints
19. What is the benefit of enabling 'Accelerated Networking' on an Azure VM? → Bypasses the host vSwitch for lower latency and higher throughput
20. What is the purpose of AKS 'node pools' with different VM sizes? → Allow different workloads to run on hardware optimized for their requirements
21. Which Azure Container Registry feature replicates images to multiple Azure regions for low-latency pulls by geographically distributed clusters? → Geo-Replication
22. Which Azure networking service performs DNS-based global traffic distribution and supports geographic, weighted, and priority routing methods? → Azure Traffic Manager
23. Which Azure SQL Database feature enables automatic failover to a secondary database in a different region with minimal data loss? → Active geo-replication
24. What is the maximum number of data disks that can be attached to a Standard_D8s_v3 VM? → 32
25. Which Azure governance service allows you to deploy a consistent set of Azure resources, policies, and RBAC assignments across multiple subscriptions? → Azure Blueprints
26. What is the maximum size of a single Azure Queue Storage message? → 64 KB
27. What Azure feature enables you to reserve compute capacity for VMs in a specific region, guaranteeing availability even during capacity constraints? → Capacity Reservations
28. An enterprise requires that Azure VM backups be retained for 5 years to meet compliance requirements. Which Azure Backup feature supports this? → Azure Backup long-term retention using the Archive tier in a Recovery Services vault
29. What is the purpose of Azure Private DNS Zones? → Resolve custom domain names privately within VNets without exposing DNS to the internet
30. A web application must remain available even if an entire Azure datacenter fails. Which redundancy option should be used? → Deploy VMs across Availability Zones in the same region