Part 2 - Azure Compute & Storage

 Part 2 – Azure Compute & Storage (Q21–40)

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21. What is Azure Virtual Machine (VM)?

Answer

An Azure Virtual Machine (VM) is an Infrastructure as a Service (IaaS) offering that allows you to create and run Windows or Linux virtual servers in the cloud.

Key Features:

• Full control over the operating system

• Supports Windows and Linux

• Auto Scaling (with VM Scale Sets)

• High Availability

• Backup and Disaster Recovery

• Custom Images

Real-Time Example:

A banking application requires a Windows Server with SQL Server installed. The organization creates an Azure VM instead of purchasing a physical server.

Interview Tip:

Use Azure VM when you need complete control over the operating system.

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22. What are the different VM sizes in Azure?

Answer

Azure provides different VM families for various workloads.

VM Family	Purpose
B-Series	Low-cost burstable workloads
D-Series	General purpose applications
E-Series	Memory-intensive applications
F-Series	Compute-intensive workloads
M-Series	Large SAP and enterprise databases
N-Series	GPU and AI workloads

Example:

• B-Series → Development environment

• D-Series → Web Application

• E-Series → SQL Server

• N-Series → Machine Learning

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23. What is Azure VM Scale Set (VMSS)?

Answer

VM Scale Sets automatically increase or decrease the number of virtual machines based on workload.

Benefits

• Auto Scaling

• High Availability

• Load Balancing

• Cost Optimization

Real-Time Example

During an online shopping festival, traffic increases from 1,000 users to 100,000 users. VM Scale Sets automatically add more VMs.

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24. What is Azure App Service?

Answer

Azure App Service is a Platform as a Service (PaaS) offering for hosting web applications, REST APIs, and mobile backends.

Supported Languages

• .NET

• Java

• Node.js

• Python

• PHP

• Go

Features

• Auto Scaling

• Built-in SSL

• CI/CD Integration

• Custom Domains

• Deployment Slots

Real-Time Example

A company hosts its ASP.NET Core Web API on Azure App Service without managing servers.

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25. Azure Virtual Machine vs Azure App Service

Azure VM	Azure App Service
IaaS	PaaS
Full OS control	No OS management
Manual patching	Automatic patching
More maintenance	Less maintenance
Best for legacy applications	Best for modern web apps

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26. What is Azure Functions?

Answer

Azure Functions is a serverless compute service that runs code in response to events.

Triggers

• HTTP

• Timer

• Blob Storage

• Queue Storage

• Event Hub

• Service Bus

Benefits

• No server management

• Pay only for execution time

• Automatic scaling

Real-Time Example

When a user uploads an image, an Azure Function automatically creates a thumbnail.

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27. What is Azure Logic Apps?

Answer

Azure Logic Apps automate workflows and integrate applications using a low-code/no-code approach.

Common Integrations

• Office 365

• Outlook

• SharePoint

• SQL Server

• SAP

• Salesforce

Example

When an email with an attachment arrives, save the attachment to Azure Blob Storage and notify a Teams channel.

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28. Difference between Azure Functions and Logic Apps

Azure Functions	Logic Apps
Code-based	Low-code
Developers	Business users & developers
Complex logic	Workflow automation
Supports C#, JavaScript, Python	Drag-and-drop designer

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29. What is Azure Kubernetes Service (AKS)?

Answer

AKS is a managed Kubernetes service for deploying and managing containerized applications.

Features

• Managed Kubernetes control plane

• Auto Scaling

• Rolling Updates

• Self-Healing

• Integrated Monitoring

Example

A microservices-based e-commerce platform runs in Docker containers orchestrated by AKS.

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30. What is Azure Container Instances (ACI)?

Answer

Azure Container Instances allow you to run containers without managing virtual machines or Kubernetes clusters.

Use Cases

• Short-lived jobs

• Batch processing

• Automation scripts

• Development and testing

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31. What is Azure Storage Account?

Answer

A Storage Account is the top-level Azure resource that provides access to Azure Storage services.

It can store:

• Blob Storage

• File Storage

• Queue Storage

• Table Storage

Example

A company stores invoices, backups, logs, and application files in a Storage Account.

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32. What are the types of Azure Storage?

Answer

Storage Type	Purpose
Blob Storage	Images, videos, files
File Storage	Shared network drives
Queue Storage	Messaging
Table Storage	NoSQL key-value storage
Disk Storage	VM disks

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33. What is Azure Blob Storage?

Answer

Azure Blob Storage stores unstructured data such as:

• Images

• Videos

• PDFs

• Backups

• Log files

Blob Types

• Block Blob

• Append Blob

• Page Blob

Real-Time Example

A social media application stores millions of user-uploaded photos in Blob Storage.

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34. What is Azure File Storage?

Answer

Azure File Storage provides fully managed SMB and NFS file shares that can be accessed by multiple virtual machines simultaneously.

Example

Multiple application servers share configuration files through Azure File Storage.

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35. What is Azure Queue Storage?

Answer

Queue Storage stores messages between application components, enabling asynchronous communication.

Real-Time Example

An online shopping application places order requests into a queue for background processing.

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36. What is Azure Table Storage?

Answer

Azure Table Storage is a NoSQL key-value datastore for structured, non-relational data.

Best For

• IoT data

• User profiles

• Device information

• Metadata

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37. What is Managed Disk in Azure?

Answer

Managed Disks are Azure-managed virtual hard disks used by Azure Virtual Machines.

Disk Types

• Standard HDD

• Standard SSD

• Premium SSD

• Premium SSD v2

• Ultra Disk

Advantages

• Automatic replication

• High availability

• Simplified management

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38. What is Azure Backup?

Answer

Azure Backup is a cloud-based service that protects Azure resources and on-premises workloads.

Supports

• Virtual Machines

• SQL Server

• Azure Files

• SAP HANA

• On-premises Servers

Features

• Incremental backups

• Long-term retention

• Encryption

• Centralized management

Real-Time Example

A company backs up production VMs every night and retains backups for seven years to meet compliance requirements.

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39. What is Azure Site Recovery (ASR)?

Answer

Azure Site Recovery provides Disaster Recovery (DR) by replicating workloads to another Azure region or a secondary site.

Features

• Continuous replication

• Planned failover

• Unplanned failover

• Failback

• Disaster recovery testing

Real-Time Example

If the primary region becomes unavailable, applications automatically fail over to a secondary region with minimal downtime.

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40. What is the difference between Azure Backup and Azure Site Recovery?

Azure Backup	Azure Site Recovery
Protects data	Protects entire applications and workloads
Recovery of files or VMs	Disaster recovery and business continuity
Scheduled backups	Continuous replication
Restore after deletion or corruption	Fail over during outages
Focuses on backup	Focuses on high availability and disaster recovery

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Part 2 Summary

In this section, you learned about:

• Azure Virtual Machines (VMs)

• VM Sizes and VM Scale Sets

• Azure App Service

• Azure Functions

• Azure Logic Apps

• Azure Kubernetes Service (AKS)

• Azure Container Instances (ACI)

• Azure Storage Accounts

• Blob, File, Queue, and Table Storage

• Managed Disks

• Azure Backup

• Azure Site Recovery (ASR)

Next: Part 3 (Q41–60) will cover Azure Networking & Security, including Virtual Networks (VNet), Subnets, Network Security Groups (NSGs), Azure Firewall, Load Balancer, Application Gateway, VPN Gateway, ExpressRoute, Azure Key Vault, Microsoft Entra ID (Azure AD), Managed Identities, Private Endpoints, DDoS Protection, and common networking interview scenarios.

Part 3 -Azure Networking Security

Part 4- Azure DevOps Monitoring Containers

Part 5- Advanced Azure Architecture High

Top 100 Azure Cloud Service Interview Questions and Answers (2026)- Part-1

Beginner to Advanced Level | Real-Time Scenarios | Azure Administrator | Azure Developer | Azure Solution Architect

We'll cover:

• Part 1 (Q1–20) – Azure Fundamentals

• Part 2 (Q21–40) – Azure Compute & Storage

• Part 3 (Q41–60) – Networking & Security

• Part 4 (Q61–80) – Azure DevOps, Monitoring & Containers

• Part 5 (Q81–100) – Real-Time Scenario Questions + Architecture Questions

Each answer will include:

• Interview Answer

• Explanation

• Real-Time Example

• Follow-up Questions

• Best Practices

• Common Mistakes

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Part 1 – Azure Fundamentals (Q1–20)

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1. What is Microsoft Azure?

Answer

Microsoft Azure is a cloud computing platform that provides more than 200 cloud services for building, deploying, and managing applications through Microsoft-managed data centers.

Azure supports:

• Infrastructure as a Service (IaaS)

• Platform as a Service (PaaS)

• Software as a Service (SaaS)

• Serverless Computing

It helps organizations reduce infrastructure costs while improving scalability, security, and availability.

Real-Time Example

Instead of purchasing physical servers for a web application, a company deploys the application on Azure App Service, eliminating the need to manage hardware.

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2. What are the different Cloud Service Models?

Answer

There are three primary cloud service models.

IaaS (Infrastructure as a Service)

Azure provides virtual machines, networking, storage, and operating systems.

Examples:

• Azure Virtual Machines

• Azure Virtual Network

Responsibilities:

• Customer manages OS and applications.

• Azure manages physical infrastructure.

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PaaS (Platform as a Service)

Azure manages servers, operating systems, runtime, and middleware.

Examples:

• Azure App Service

• Azure SQL Database

Responsibilities:

• Customer manages application code.

• Azure manages the platform.

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SaaS (Software as a Service)

Applications are fully managed by Microsoft.

Examples:

• Microsoft 365

• Dynamics 365

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3. What are the deployment models in Azure?

Answer

Azure supports:

• Public Cloud

• Private Cloud

• Hybrid Cloud

• Multi-Cloud

Real-Time Example

A bank stores customer data in a private cloud while hosting its website in Azure Public Cloud.

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4. What is an Azure Region?

Answer

An Azure Region is a geographical area containing one or more Azure data centers.

Examples:

• East US

• West Europe

• Central India

• South India

Organizations select regions based on:

• Latency

• Compliance

• Disaster Recovery

• Data Residency

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5. What is an Availability Zone?

Answer

Availability Zones are physically separate data centers within an Azure Region.

Each zone has independent:

• Power

• Cooling

• Networking

If one zone fails, applications continue running in another zone.

Example

Deploy three virtual machines across three Availability Zones to achieve high availability.

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6. Difference between Region and Availability Zone?

Region	Availability Zone
Geographic location	Separate datacenter within a region
Disaster Recovery	High Availability
Hundreds of miles apart	Few miles apart
Example: Central India	Zone 1, Zone 2, Zone 3

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7. What is an Azure Resource Group?

Answer

A Resource Group is a logical container that holds related Azure resources.

Example:

E-commerce Project

Resource Group

• Virtual Machine

• SQL Database

• Storage Account

• App Service

• Key Vault

Deleting the Resource Group removes all contained resources.

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8. What is Azure Resource Manager (ARM)?

Answer

Azure Resource Manager (ARM) is the deployment and management service for Azure.

Features:

• Infrastructure as Code

• Templates

• Role-Based Access Control

• Resource Organization

Example:

Deploy an entire environment using a single ARM template.

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9. What is an ARM Template?

Answer

ARM Templates are JSON files used to automate Azure resource deployment.

Benefits:

• Repeatable deployments

• Version control

• Automation

• Consistency

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10. What is Azure Subscription?

Answer

An Azure Subscription is a billing and resource management boundary.

Each subscription includes:

• Billing account

• Resource quotas

• Access control

• Cost tracking

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11. What is Azure Management Group?

Answer

Management Groups help organize multiple Azure subscriptions.

Example hierarchy:

Management Group

   ├── Production Subscription

   ├── Development Subscription

   └── Testing Subscription

Policies can be applied to all subscriptions.

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12. What is Azure Portal?

Answer

Azure Portal is a web-based graphical interface for managing Azure resources.

It allows users to:

• Create resources

• Monitor services

• Configure networking

• Manage storage

• View billing

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13. What is Azure CLI?

Answer

Azure CLI is a command-line tool for managing Azure resources.

Example:

az group create \
  --name DemoRG \
  --location centralindia

Useful for automation and scripting.

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14. What is Azure PowerShell?

Answer

Azure PowerShell is a PowerShell module used to automate Azure management tasks.

Example:

New-AzResourceGroup `
-Name DemoRG `
-Location "Central India"

Preferred by Windows administrators.

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15. Azure CLI vs Azure PowerShell

Azure CLI	Azure PowerShell
Cross-platform	Windows-oriented
Bash syntax	PowerShell syntax
Best for Linux	Best for Windows
DevOps friendly	Admin friendly

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16. What is Azure Cloud Shell?

Answer

Azure Cloud Shell is a browser-based shell environment.

Supports:

• Bash

• PowerShell

• Azure CLI

• Git

• Terraform

No installation required.

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17. What are Azure Tags?

Answer

Tags are key-value pairs attached to Azure resources.

Example:

Environment=Production

Department=Finance

Owner=IT

CostCenter=1001

Benefits:

• Cost management

• Resource organization

• Billing reports

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18. What is Azure Policy?

Answer

Azure Policy enforces organizational standards.

Examples:

• Allow only approved regions

• Enforce resource tagging

• Restrict VM sizes

• Require encryption

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19. What is Role-Based Access Control (RBAC)?

Answer

RBAC controls who can access Azure resources and what actions they can perform.

Common roles:

• Owner

• Contributor

• Reader

• User Access Administrator

Example

A developer is assigned the Contributor role to deploy applications but cannot change user permissions.

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20. Difference between Azure Policy and RBAC?

Azure Policy	RBAC
Controls resource compliance	Controls user permissions
Enforces standards	Grants access
Resource-focused	Identity-focused
Example: Only approved VM sizes	Example: Reader access

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Part 1 Summary

In this section, you learned:

• Azure fundamentals

• Cloud service models

• Azure Regions and Availability Zones

• Resource Groups

• ARM and ARM Templates

• Azure Portal

• Azure CLI

• Azure PowerShell

• Azure Cloud Shell

• Azure Tags

• Azure Policy

• RBAC

• Azure Subscriptions

• Management Groups

The next section (Questions 21–40) will cover Azure Compute and Storage services, including Virtual Machines, VM Scale Sets, App Service, Azure Functions, Storage Accounts, Azure Files, Azure Blob Storage, Azure Disks, Azure Backup, Azure Site Recovery, and more, with real-world interview scenarios and practical examples.

Part 2 -Azure Compute Storage

Part 3 -Azure Networking Security

Part 4- Azure DevOps Monitoring Containers

Part 5- Advanced Azure Architecture High