Top Interview questions on Azure cloud

Here are the top interview questions on Azure Cloud

Here are some of the top interview questions and answers on Azure Cloud:

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 Basic Questions

 1. What is Azure?

Azure is a cloud computing platform by Microsoft that provides services like computing, analytics, storage, and networking. It supports IaaS, PaaS, and SaaS models to build, deploy, and manage applications.

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 2. What are the main components of the Azure architecture?

- Azure Regions: Physical locations worldwide where Azure data centers are located.

- Resource Groups: Logical containers for managing Azure resources.

- Azure Resource Manager (ARM): The deployment and management service.

- Subscriptions: A unit to manage costs and access to resources.

- Virtual Network (VNet): Allows communication between Azure resources securely.

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 3. What is the difference between Azure IaaS, PaaS, and SaaS?

| Feature | IaaS | PaaS | SaaS |

|----------|--------------------------|-------------------------|-------------------------|

| Control | Full control of resources | Partial control | Minimal control |

| Example | Virtual Machines, Storage | Azure App Service | Office 365 |

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 4. What are Azure Resource Groups?

Resource Groups are logical containers where Azure resources like VMs, databases, and storage accounts are created, managed, and deployed.

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 5. What is the Azure Marketplace?

Azure Marketplace is an online store offering software applications and services designed for Azure. It helps users find, purchase, and deploy pre-configured solutions.

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 Intermediate Questions

 6. What is the Azure App Service?

Azure App Service is a PaaS offering to host web applications, RESTful APIs, and mobile backends. It supports multiple languages like .NET, Java, Python, PHP, and Node.js.

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 7. What are Azure Virtual Machines?

Azure Virtual Machines (VMs) are scalable, on-demand computing resources that provide virtualized computing environments. They are IaaS services used to host applications.

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 8. What is Azure Active Directory (Azure AD)?

Azure AD is a cloud-based identity and access management service. It enables single sign-on (SSO), multi-factor authentication (MFA), and integrates with external apps like Office 365.

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 9. What is Azure Blob Storage?

Azure Blob Storage is a service for storing unstructured data like images, videos, and documents. It has three types:

- Block Blob: For storing binary and text data.

- Append Blob: For log data.

- Page Blob: For random read/write operations.

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 10. What are Availability Sets in Azure?

An Availability Set ensures high availability for VMs by distributing them across multiple physical servers and fault domains, preventing downtime.

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 Advanced Questions

 11. What is Azure Kubernetes Service (AKS)?

AKS is a managed Kubernetes service that simplifies deploying, managing, and scaling containerized applications using Kubernetes on Azure.

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 12. How does Azure Monitor work?

Azure Monitor collects data about the performance and health of Azure resources and applications. It provides:

- Metrics for resource monitoring.

- Logs for troubleshooting.

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 13. What is the role of Azure Traffic Manager?

Azure Traffic Manager is a DNS-based traffic load balancer that distributes traffic optimally across global Azure regions for better performance and availability.

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 14. What are Azure Logic Apps?

Azure Logic Apps are workflows to automate business processes and integrate with other services (e.g., Office 365, SQL Server, and SharePoint).

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 15. What is the difference between Azure SQL Database and SQL Managed Instance?

Feature Azure SQL Database SQL Managed Instance

Compatibility Limited SQL Server features Near-complete SQL Server compatibility

Use Case Cloud-native apps Migration of on-premises SQL databases

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 16. What is Azure DevOps?

Azure DevOps is a set of tools for DevOps practices, including CI/CD pipelines, repositories, and project management.

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 17. What is Azure Service Fabric?

Azure Service Fabric is a distributed systems platform for building scalable and reliable microservices-based applications.

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 18. How do you secure Azure resources?

- Use Azure RBAC (Role-Based Access Control) for permissions.

- Implement Azure Policies for compliance.

- Enable MFA for users.

- Use Azure Key Vault for secrets management.

- Enable DDoS Protection.

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 Scenario-Based Questions

 19. How would you design a high-availability application in Azure?

- Use Availability Zones or Availability Sets.

- Distribute resources across multiple Regions.

- Implement Azure Load Balancer or Traffic Manager.

- Use SQL Geo-Replication for database redundancy.

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 20. How would you migrate an on-premises application to Azure?

- Assess and analyze the application using Azure Migrate.

- Choose the appropriate migration method (e.g., lift-and-shift using VMs or re-architect for PaaS).

- Set up network connectivity with VPN Gateway or ExpressRoute.

- Test the migrated application and monitor with Azure Monitor.