Top 30 Microsoft Azure Interview Questions

1. What is Cloud Computing?
   A platform for storing and accessing data over the internet from anywhere in the world.
2. What is Azure Cloud Service?
   A dynamic cloud platform launched in 2010 that offers development, data storage, service hosting, and management.
3. Which service in Azure can be used to manage resources?
   Azure Resource Manager allows deployment, management, and deletion of resources using JSON scripts.
4. What type of web application can be deployed with Azure?
   Applications written in various languages, including Java and Ruby, using SDKs to call Azure Service APIs.
5. Explain Role in terms of Microsoft Azure.
   Roles refer to managed, load-balanced virtual machines. They include:
   • Web Role: For deploying websites.
   • Worker Role: For executing background processes.
   • VM Role: For customizing virtual machines.
6. What are Virtual Machine Scale Sets?
   An Azure resource for deploying and managing a set of identical VMs, suitable for large-scale services.
7. What are the principal segments of the Windows Azure platform?
   • Windows Azure Compute
   • Windows Azure Storage
   • Windows Azure AppFabric
8. What do you understand by autoscaling in Azure?
   Autoscaling adjusts resources automatically based on application use, time, and traffic demands.
9. What is a storage key?
   An authentication method for validating access to the storage service account, with primary and secondary keys for redundancy.
10. Explain SQL Azure database.
    A cloud-based database service similar to SQL Server, offering high availability, versatility, and security.
11. Explain cmdlet in Azure.
    A lightweight command used in the Azure PowerShell environment to automate tasks.
12. What is the Migration Assistant tool in Microsoft Azure?
    A tool that evaluates IIS installations and identifies sites suitable for migration to Azure.
13. What is Azure SLA (Service Level Agreement)?
    An assurance of service availability, typically 99.95% for services with multiple role instances.
14. What is an Availability Set in Azure?
    A grouping of Azure VMs designed to ensure availability and redundancy.
15. What steps should we take in case of drive failure?
    Unmount the drive, format it, and remount it after replacement.
16. Why do we use VNet?
    To logically isolate cloud instances and manage network resources securely.
    Power States of a VM: Running, Starting, Stopping, Deallocating.
17. What is a network security group?
    A feature for managing network traffic to network interfaces (NICs) or subnets.
18. What is cspack?
    A command-line tool for generating service package files for application deployment.
19. Name two blobs used in Microsoft Azure.

• Block Blob
• Page Blob

20. Can we add an existing VM to an availability set?
    No, VMs must be created within the availability set.
21. How much storage can we use with a virtual machine?
    Each data disk can be up to 1 TB; the number of disks depends on the VM size.
22. How to create a VM in Azure CLI?

23. What is Azure Search?
    A cloud-based search-as-a-service solution for adding search capabilities to applications.
24. Explain stateful and stateless microservices for Service Fabric.

• Stateless: Does not maintain state outside a request (e.g., worker role).
• Stateful: Maintains authoritative state beyond requests.

25. What is a Web Role in Azure Cloud Service?
    A VM instance running Microsoft IIS Web server to respond to HTTP/HTTPS requests.
26. Can we create a VM using Azure Resource Manager in a Virtual Network created using classic deployment?
    No, this is not supported.
27. What are the options available in Azure for data storage?

• Azure Files
• OS Drive
• Scale Set
• Temp Drive
• Azure Data Service
• External Data Service

28. What is Azure Redis Cache?
    An open-source, in-memory data store used as a database, cache, and message broker.
29. What are Redis databases?
    Fully managed, open-source in-memory data stores for fast and scalable applications.
30. How to create a VM in PowerShell?

Interview Tips

• Preparation: Understand Azure fundamentals, services, and architectures.
• Hands-on Experience: Gain practical experience through projects or labs.
• Stay Updated: Keep abreast of the latest Azure features and updates.
• Practice: Mock interviews can help improve your responses.