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Microsoft Azure Interview Questions in Kolkata

36 practice questions with answers for Microsoft Azure interviews in Kolkata.

Microsoft Azure jobs in Kolkata

Kolkata has a steady IT-services and BFSI technology job market around Salt Lake Sector V and New Town. Many openings are with service companies and their delivery centres, with a focus on strong fundamentals.

Below are 36 questions that match the mix of service, product and domain employers hiring azure cloud support associates in Kolkata.

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01

An order system needs reliable, ordered messaging between services. Would you pick Queue Storage or Service Bus, and why?

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Queue Storage is cheap and simple, holds millions of messages up to 64 KB each, and suits basic background work. Service Bus is an enterprise broker with queues and topics, FIFO through sessions, duplicate detection, dead-lettering, transactions and messages up to 100 MB on Premium. Choose Service Bus for ordered or business-critical messaging like orders and payments, and Storage queues for simple, high-volume job queues.
02

What is a Shared Access Signature (SAS) and what types exist?

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A SAS is a signed URL token granting limited access to storage for a set time and permissions, such as read-only for one blob for one hour. A user delegation SAS is signed with Entra ID credentials and is the most secure. A service SAS and an account SAS are signed with the account key. Always use HTTPS, short expiry and stored access policies so tokens can be revoked.
03

Create an Azure SQL Database with Entra-only authentication using Azure CLI.

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Create the logical server with an Entra admin group and no SQL logins, then the database: az sql server create -g rg-data -n sql-shop-prod -l centralindia \ --enable-ad-only-auth \ --external-admin-principal-type Group \ --external-admin-name grp-sql-admins \ --external-admin-sid <group-object-id> az sql db create -g rg-data -s sql-shop-prod -n shopdb \ --edition GeneralPurpose --family Gen5 --capacity 2 \ --zone-redundant true --backup-storage-redundancy Zone
04

Compare Azure Load Balancer, Application Gateway, Front Door and Traffic Manager.

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Load Balancer works at layer 4 (TCP/UDP) inside a region. Application Gateway is a regional layer 7 load balancer with path routing, TLS termination and an optional WAF. Front Door is a global layer 7 entry point with anycast, CDN caching and WAF. Traffic Manager is DNS-based global routing for any protocol. Use Front Door for global web apps and Load Balancer for non-HTTP traffic.
05

A client wants to move a SQL Server database that uses SQL Agent jobs and cross-database queries. Which Azure SQL option fits, and what are the alternatives?

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Azure SQL Database is a fully managed single database or elastic pool, best for new cloud apps. SQL Managed Instance offers near 100% SQL Server compatibility including SQL Agent, cross-database queries and CLR, in a VNet, ideal for lift-and-shift. SQL Server on a VM gives full OS and instance control for unsupported features but you handle patching, HA and backups yourself, although the SQL IaaS extension helps.
06

What is Azure Firewall and how is it different from an NSG?

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Azure Firewall is a managed, stateful, centralised firewall with network and application rules, FQDN filtering, threat intelligence and, in the Premium SKU, TLS inspection and IDPS. NSGs are distributed basic filters on subnets and NICs. Typically NSGs control traffic within and between subnets, while Azure Firewall in a hub controls internet egress and cross-spoke traffic with central logging.
07

What is Microsoft Defender for Cloud?

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Defender for Cloud is a cloud security posture management and workload protection platform. The free foundational tier gives a secure score and recommendations based on the Microsoft cloud security benchmark. Paid Defender plans add threat detection for servers, storage, SQL, containers, Key Vault and App Service, vulnerability scanning and attack path analysis. It also covers AWS and GCP accounts and on-premises servers through Arc.
08

Write a basic Terraform configuration for a resource group and VNet with remote state.

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Configure the azurerm backend and provider, then resources: terraform { backend "azurerm" { resource_group_name = "rg-tfstate" storage_account_name = "sttfstateprod" container_name = "state" key = "network.tfstate" use_azuread_auth = true } } provider "azurerm" { features {} } resource "azurerm_resource_group" "net" { name = "rg-net-prod" location = "centralindia" } resource "azurerm_virtual_network" "hub" { name = "vnet-hub" location = azurerm_resource_group.net.location resource_group_name = azurerm_resource_group.net.name address_space = ["10.0.0.0/16"] }
09

What are soft delete, versioning and immutable storage for blobs?

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Soft delete keeps deleted blobs or containers for a retention period so you can restore them. Versioning saves the previous version automatically each time a blob is overwritten. Immutable storage applies time-based retention or legal hold policies in WORM mode, so nobody, not even an admin, can delete or change data until it expires. Regulated firms use immutability for audit records and ransomware protection.
10

Users report the website on App Service is slow every morning at 9 AM. How do you investigate?

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Check Application Insights for response times, failed requests and dependency calls around 9 AM, and App Service plan metrics for CPU, memory and instance count. A morning spike often means traffic surge with autoscale reacting too slowly, cold start after idle, or a slow SQL query under load. Fixes include scheduled scale-out before 9 AM, Always On, a higher tier, caching with Redis or query tuning.
11

An application on a VM must access a storage account without any keys. How do you set it up?

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Enable a system-assigned or user-assigned managed identity on the VM. Assign the identity the least role needed, such as Storage Blob Data Reader on the specific container. In code, use DefaultAzureCredential or ManagedIdentityCredential from the Azure SDK. Then disable shared key access on the account. The token is fetched from the local metadata endpoint and rotated automatically by Azure.
12

How do you keep up with security changes in Azure?

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Situation: Azure releases security changes every month, and missing one can expose our systems. Task: stay current without losing project time. Action: I follow Azure Updates and the Azure Security blog, read the monthly Defender for Cloud changes, review Service Health retirement notices and spend an hour weekly in a lab. Result: our team was ready for the mandatory MFA rollout for Azure sign-ins before it was enforced.
13

Create a route table that sends internet traffic to Azure Firewall.

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Add a default route with next hop Virtual appliance pointing to the firewall private IP, then attach it to the spoke subnet: az network route-table create -g rg-net -n rt-spoke1 az network route-table route create -g rg-net \ --route-table-name rt-spoke1 -n default-to-fw \ --address-prefix 0.0.0.0/0 \ --next-hop-type VirtualAppliance --next-hop-ip-address 10.0.1.4 az network vnet subnet update -g rg-net --vnet-name vnet-spoke1 \ -n snet-app --route-table rt-spoke1
14

Explain the 5 Rs (or 6 Rs) of cloud migration in an Azure context.

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Rehost moves VMs as-is using Azure Migrate. Refactor makes small changes, such as moving a web app to App Service. Rearchitect changes the design, for example splitting into microservices on AKS. Rebuild rewrites as cloud-native. Replace swaps the app for SaaS. Some lists add Retire or Retain. Azure Migrate assessments help choose per workload based on dependencies, cost and readiness.
15

A team accidentally deleted a production resource group. How do you prevent this in future?

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First recover what is possible: soft delete or backups for storage, Key Vault, SQL and VMs. Then add CanNotDelete locks on production groups, remove Owner and Contributor rights from individual users, and grant access through Entra groups with Privileged Identity Management for just-in-time elevation. Deploy infrastructure through pipelines only, and set activity log alerts on delete operations so the team is notified instantly.
16

Generate a user delegation SAS for one blob with Azure CLI.

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Log in with Entra ID, then create a short-lived read-only SAS signed with your identity: az storage blob generate-sas \ --account-name stshopprod --container-name invoices \ --name inv-1001.pdf --permissions r \ --expiry 2026-11-12T18:00Z --https-only \ --auth-mode login --as-user --full-uri The caller needs a role that allows generating user delegation keys.
17

Peer two VNets in both directions with Azure CLI.

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Peering must be created from each side. Allow forwarded traffic if a hub firewall routes it: az network vnet peering create -g rg-net -n hub-to-spoke1 \ --vnet-name vnet-hub --remote-vnet vnet-spoke1 \ --allow-vnet-access --allow-forwarded-traffic --allow-gateway-transit az network vnet peering create -g rg-net -n spoke1-to-hub \ --vnet-name vnet-spoke1 --remote-vnet vnet-hub \ --allow-vnet-access --allow-forwarded-traffic --use-remote-gateways
18

How do you migrate 200 TB of on-premises data to Azure when the internet link is slow?

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Calculate transfer time first: 200 TB over a 1 Gbps link at 70% efficiency takes almost a month. Use Azure Data Box devices shipped to your site, copy data locally and send them back for upload into the storage account. Then run AzCopy or Azure File Sync to sync the changes made after shipping. For ongoing large flows, consider ExpressRoute.
19

How do you prioritise when several alerts fire at the same time?

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Situation: during a release night, CPU, disk and payment error alerts fired together. Task: decide what to handle first. Action: I ranked by customer impact, so payment failures came first, checked Service Health for a platform issue, assigned disk and CPU checks to a teammate and kept a running update in the incident channel. Result: payments recovered quickly and we tuned the noisy CPU alerts afterwards.
20

What is the difference between an availability set and an availability zone?

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An availability set spreads VMs across fault domains (separate racks, power and switches) and update domains (rebooted at different times) inside one datacenter, giving a 99.95% SLA. Availability zones place VMs in physically separate datacenters within a region, giving 99.99%. Zones protect against a full datacenter outage; availability sets only protect against rack and maintenance failures. New designs prefer zones where the region supports them.
21

How do you explain a technical storage decision to a non-technical stakeholder?

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Situation: finance asked why we needed GZRS instead of cheaper LRS. Task: justify the cost clearly. Action: I compared the options in business terms: LRS survives a disk failure, GZRS survives losing a whole region, and I showed the cost of downtime per hour for our app versus the extra monthly charge. Result: they approved GZRS only for critical data and LRS for the rest.
22

What are Azure Managed Disks and their types?

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Managed disks are block storage volumes for VMs that Azure manages as resources, with built-in redundancy. Types are Standard HDD for backups and dev, Standard SSD for light workloads, Premium SSD for production, Premium SSD v2 with independently tunable IOPS and throughput, and Ultra Disk for very high IOPS and low latency such as SAP HANA. Disks can be LRS or ZRS for some types.
23

A VM in a spoke cannot reach a VM in another spoke. What could be wrong?

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Peering is not transitive, so spoke to spoke traffic needs a route through the hub. Check that both spokes have UDRs pointing the other spoke's range to the hub firewall, that peerings allow forwarded traffic, and that firewall network rules allow the flow. Then check NSGs on both subnets and NICs and the guest OS firewall. Use Network Watcher next hop and IP flow verify to confirm.
24

What are RPO and RTO and how do they guide Azure designs?

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RPO, recovery point objective, is the maximum acceptable data loss measured in time. RTO, recovery time objective, is how long recovery may take. A daily backup gives an RPO of up to 24 hours. Site Recovery gives an RPO of seconds to minutes and an RTO of minutes to hours. SQL failover groups give an RPO of seconds. Lower RPO and RTO cost more, so agree targets per application.
25

Tell me about a time you led a migration of workloads to Azure.

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Situation: our company had to exit a leased datacenter in nine months with 120 VMs. Task: lead the compute migration. Action: I ran Azure Migrate assessments, grouped VMs by dependency into waves, rehosted most with Azure Migrate and moved web apps to App Service, with rollback plans for each wave. Result: we finished a month early and cut monthly run cost by about 25% after right-sizing.
26

How would you protect storage accounts against ransomware?

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Combine prevention and recovery. Use private endpoints, disable shared keys and public access, and restrict RBAC with PIM. Enable soft delete, versioning, change feed and point-in-time restore. For critical data, use immutable storage policies or vaulted Azure Backup with immutability and multi-user authorization so attackers cannot delete backups. Turn on Defender for Storage to detect malware uploads and unusual access.
27

Create a Linux VM with Azure CLI using SSH keys and no public IP.

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Create the VM in an existing subnet with an empty public IP and generated SSH keys, then connect through Bastion: az vm create \ --resource-group rg-app-dev \ --name vm-api-01 \ --image Ubuntu2204 \ --size Standard_D2s_v5 \ --vnet-name vnet-dev --subnet snet-app \ --public-ip-address '' \ --admin-username azureuser \ --generate-ssh-keys \ --zone 1
28

How do you reference Key Vault secrets in App Service app settings?

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Enable a managed identity on the app, grant it Key Vault Secrets User on the vault, then set the app setting value to a Key Vault reference: @Microsoft.KeyVault(SecretUri=https://kv-shop-prod.vault.azure.net/secrets/SqlPassword/). The app reads it as a normal environment variable. Omitting the version makes App Service pick up rotated secrets automatically within about a day, or on restart.
29

What is the shared responsibility model in Azure?

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Security duties are split between Microsoft and the customer. Microsoft always owns physical datacenters, hosts and the network fabric. The customer always owns data, identities, accounts and devices. The middle layers move with the service model: in IaaS you patch the OS and configure firewalls; in PaaS Microsoft patches the OS and runtime; in SaaS you mainly manage users and data.
30

A developer's service principal secret was committed to a public GitHub repo. What do you do?

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Treat it as compromised. Immediately delete the secret on the app registration and create a new one only if needed, then update the pipeline. Check Entra sign-in logs for service principal sign-ins and the activity log for changes made with it, and remove anything suspicious. Purge it from Git history. Long term, move pipelines to workload identity federation so no secret exists to leak.
31

What is Azure DNS and what is a private DNS zone?

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Azure DNS hosts public DNS zones on Microsoft's global name servers so you can manage records like A and CNAME with RBAC. Private DNS zones resolve names only inside linked VNets, used for internal names and private endpoints. For hybrid name resolution, Azure DNS Private Resolver lets on-premises DNS forward queries into Azure and Azure forward queries back on-premises without custom DNS VMs.
32

Assign a role to a group at resource group scope with Azure CLI.

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Look up the group object ID, then create the role assignment with the narrowest scope: GROUP_ID=$(az ad group show --group 'grp-shop-devs' --query id -o tsv) az role assignment create \ --assignee-object-id $GROUP_ID \ --assignee-principal-type Group \ --role Contributor \ --scope /subscriptions/<sub-id>/resourceGroups/rg-shop-dev Assigning to groups instead of users keeps access easy to audit.
33

What are Azure Advisor recommendations?

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Azure Advisor analyses your resource configuration and usage and gives free recommendations in five categories: reliability, security, performance, cost and operational excellence. Examples include resizing underused VMs, buying reservations, enabling zone redundancy and adding backups. It provides an Advisor score per category. Review it weekly, suppress items that are not relevant, and use its alerts to notify owners of new cost recommendations.
34

What is Conditional Access?

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Conditional Access is the Entra ID policy engine that decides how users sign in. Policies combine signals like user or group, app, location, device compliance, client app and sign-in risk, then grant access, require MFA or a compliant device, or block. For example, require MFA for all admins and block legacy authentication. It requires Entra ID P1, and risk-based policies need P2.
35

What are Request Units (RUs) in Cosmos DB?

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An RU is a normalised measure of the CPU, memory and IO needed for an operation. A point read of a 1 KB item costs about 1 RU, while writes and queries cost more depending on size, indexing and complexity. You pay for provisioned RU/s, autoscale RU/s or serverless consumption. Requests beyond the limit get HTTP 429 and must retry, so measure RU charge from response headers.
36

Why would you use Azure Cache for Redis?

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Redis is an in-memory key-value store used for caching frequent database reads, storing user sessions, rate limiting, leaderboards and pub/sub. Caching a product catalogue can cut database load and bring latency from tens of milliseconds to around one. Use the cache-aside pattern with sensible TTLs. Microsoft now steers new deployments to Azure Managed Redis, which is based on Redis Enterprise.

Companies with offices in Kolkata (4)

Frequently asked questions

Which companies hire Microsoft Azure professionals in Kolkata?

Companies with large offices in Kolkata include Wipro, Cognizant, EY, PwC. Use their company pages below to practise employer-specific sets.

Are Microsoft Azure interviews in Kolkata different from other cities?

The questions depend more on the company than the city. Kolkata's mix of employers decides the style: Many openings are with service companies and their delivery centres, with a focus on strong fundamentals

How do I find Microsoft Azure jobs in Kolkata?

Shortlist companies with Kolkata offices, keep your CV focused on Microsoft Azure projects, apply on company career pages and job portals with the Kolkata filter, and practise the questions on this page before each interview.