Top 50 Azure Administrator Interview Questions and Answers

Azure Administrator roles focus on day-to-day management of Azure resources. The following questions reflect what interviewers typically ask across compute, storage, networking, and identity.

Compute and Virtual Machines

What is an Azure Resource Group?

A Resource Group is a logical container that holds related Azure resources, letting administrators manage, monitor, and apply access controls or billing to those resources as a single unit.

What is a Virtual Machine Scale Set?

A Virtual Machine Scale Set lets you deploy and manage a group of identical, load-balanced VMs that automatically scale in or out based on demand or a defined schedule.

What is the difference between a managed disk and an unmanaged disk?

Managed disks are handled entirely by Azure, which takes care of storage account management, whereas unmanaged disks require the administrator to manage the underlying storage account manually.

How do you resize a VM in Azure?

You can resize a VM through the portal, CLI, or PowerShell by selecting a new VM size; this typically requires stopping the VM first if the target size isn't available on the current hardware cluster.

Storage

What are the different types of storage accounts in Azure?

Azure offers Standard general-purpose v2, Premium block blob, Premium file shares, and Premium page blob storage accounts, each optimized for different performance and workload needs.

What is Azure Blob Storage used for?

Blob Storage is optimized for storing large amounts of unstructured data such as documents, images, video, and backups, and it supports hot, cool, and archive access tiers.

What is the difference between LRS, ZRS, and GRS replication?

LRS (Locally Redundant Storage) copies data within a single datacenter, ZRS (Zone-Redundant Storage) copies it across availability zones, and GRS (Geo-Redundant Storage) copies it to a secondary region.

Networking

What is a Network Security Group (NSG)?

An NSG is a set of security rules that allow or deny inbound and outbound network traffic to Azure resources, based on source, destination, port, and protocol.

What is Azure Virtual Network (VNet) peering?

VNet peering connects two virtual networks so resources in each can communicate with each other using private IP addresses, without requiring a gateway or public internet routing.

What is the difference between a public IP and a private IP in Azure?

A public IP is reachable from the internet and used for inbound/outbound internet communication, while a private IP is only reachable within a virtual network or connected networks.

Identity and Governance

What is Role-Based Access Control (RBAC)?

RBAC is Azure's authorization system that grants users, groups, or applications specific permissions on resources based on assigned roles, following the principle of least privilege.

What is the difference between Azure AD and on-premises Active Directory?

On-premises Active Directory manages identities within a local network using protocols like LDAP and Kerberos, while Azure AD is a cloud identity service built for web-based authentication, SSO, and SaaS access.

What are Azure Policies used for?

Azure Policies enforce organizational rules and standards across resources, such as restricting allowed VM sizes or requiring specific tags, and they can audit or automatically remediate non-compliant resources.

Monitoring and Maintenance

What is Azure Monitor?

Azure Monitor is a unified service for collecting, analyzing, and acting on telemetry from Azure and on-premises resources, including metrics, logs, and alerts.

How do you back up a VM in Azure?

Azure Backup lets you configure a Recovery Services vault and backup policy for a VM, taking scheduled snapshots that can be used to restore the VM or individual files later.