Interview Q&A

Short answer: Model Description Example for .NET IaaS (Infrastructure) Provides virtual machines, networking, storage Azure VM running Windows + IIS hosting ASP.NET app PaaS (Platform) Managed hosting environment for apps Azure App Service, Azure Functions SaaS (Software) Fully managed software accessible via browser Office 365, Dynamics 365

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Strong Answer: Managed Identity eliminates the need to store credentials. Problem without it: Secrets stored in config Risk of leakage Solution: Azure assigns identity to service

Example code

App Service → accesses Key Vault securely Real-world Example: Instead of: var secret = "hardcoded-key"; We use: Managed Identity + Key Vault Why interviewers ask: To check security maturity level

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: zure assigns identity to service App Service → accesses Key Vault securely Real-world

Example code

Instead of: var secret = "hardcoded-key"; We use: Managed Identity + Key Vault Why interviewers ask: To check security maturity level zure assigns identity to service Example: App Service → accesses Key Vault securely Real-world… Example: Instead of: var… secret = "hardcoded-key"; We use: Managed Identity + Key Vault Why interviewers ask: To check security maturity level zure assigns identity to service Example: App Service → accesses Key Vault securely Real-world Example: Instead of: var secret = "hardcoded-key"; We use: Managed Identity + Key Vault Why interviewers ask: To check security maturity level zure assigns identity to service Example: App Service → accesses Key Vault securely Real-world… Example: Instead of: var secret = "hardcoded-key"; We use: Managed Identity + Key Vault Why interviewers ask: To check security maturity level

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: A set of NuGet packages to interact with Azure resources from .NET apps. Includes services like Storage, Cosmos DB, Key Vault, Event Hubs, and more.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Strong Answer: Two types: Vertical Scaling Increase CPU/RAM Horizontal Scaling Increase instances Real-world Scenario: During sale: Traffic spikes 10x Auto-scale triggers → adds instances Advanced insight: Configure rules based on: CPU % Request count

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: dvanced insight: Configure rules based on: CPU % Request count

Real-world example (ShopNest)

ShopNest’s API runs on Azure App Service with staging slots—swap staging to production after smoke tests.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Strong Answer: Feature Azure Function Web API Execution Event-driven Request-drive Scaling Auto Manual/Auto Use case Background jobs Business APIs Real-world Example: API → user requests Function → email sending

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: PI? Strong Answer: Feature Azure Function Web API Execution Event-driven Request-drive Scaling Auto Manual/Auto Use case Background jobs Business APIs Real-world Example: API → user requests Function → email sending

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Azure App Service is a fully managed PaaS platform for hosting web apps, REST APIs, and mobile backends. It handles infrastructure, scaling, security, and patching automatically.

Real-world example (ShopNest)

ShopNest’s API runs on Azure App Service with staging slots—swap staging to production after smoke tests.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Web Apps: Designed for websites, support Razor Pages, MVC, and Blazor. API Apps: Optimized for RESTful APIs, includes built-in Swagger support and API authentication features.

Real-world example (ShopNest)

ShopNest’s API runs on Azure App Service with staging slots—swap staging to production after smoke tests.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Defines the compute resources (CPU, memory, storage) for your App Service. Determines pricing tier, scaling, and availability.

Real-world example (ShopNest)

ShopNest’s API runs on Azure App Service with staging slots—swap staging to production after smoke tests.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Strong Answer CQRS separates: Read operations Write operations Implementation: Commands → Service Bus Queries → Read DB Real-world Example: E-commerce: Writes → Order DB Reads → Optimized read DB

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: zure? Strong Answer CQRS separates: Read operations Write operations Implementation: Commands → Service Bus Queries → Read DB Real-world Example: E-commerce: Writes → Order DB Reads → Optimized read DB

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Method Description Use Case Zip Deploy Upload a zip file; replaces app content Quick automated deployments FTP/FTPS Manual file upload via FTP client Small apps or manual updates WebDeploy (MSDeploy) Incremental deployment with config & db sync Complex apps with dependencies

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: developers make in Azure?” Strong Answer: Not designing for failure and scalability. Common mistakes: No caching Tight coupling No retry logic Hardcoded secrets Real-world impact: System crashes under load.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Kudu is the deployment engine behind Azure App Service. Provides: Console access to the app environment Process explorer Deployment logs File explorer for troubleshooting

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: A deployment slot is a separate environment for your App Service, e.g., staging, testing, QA, or production. Each slot runs as a full App Service instance with its own hostname, configuration, and settings. Enables zero-downtime deployments by swapping slots.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: In-process: Runs within the same process as the Functions runtime. Direct access to runtime APIs. Isolated process: Runs in a separate process, providing better dependency isolation and .NET version flexibility.

Real-world example (ShopNest)

Order-paid events go to Service Bus; an Azure Function sends the confirmation email asynchronously.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: A trigger defines how and when a function is invoked.

Explain a bit more

Examples: HTTP requests, queue messages, blob changes, timer events. Every function must have exactly one trigger. Example (HTTP trigger): [FunctionName("HttpTriggerFunction")] public static IActionResult Run( [HttpTrigger(AuthorizationLevel.Function, "get", "post")] HttpRequest req, ILogger log) { log.LogInformation("HTTP trigger executed."); return new OkObjectResult("Hello from Azure Function!");

Real-world example (ShopNest)

Order-paid events go to Service Bus; an Azure Function sends the confirmation email asynchronously.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Trigger: Invokes the function. Every function must have one trigger. Binding: Connects function inputs/outputs to external resources. Optional, can have multiple.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Azure SQL Database is a fully managed relational database service on Azure. Provides automatic backups, patching, scaling, high availability, and security.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Azure Cosmos DB is a globally distributed, multi-model NoSQL database. Supports key-value, document, graph, and column-family data models. Provides automatic scaling, low latency, and global replication.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Serverless compute tier auto-scales based on workload and pauses during inactivity. Cost-efficient for intermittent workloads.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: DTU (Database Transaction Unit): Bundled measure of CPU, memory, IOPS. vCore: Separate allocation of virtual cores, memory, and storage. vCore allows flexible scaling and cost optimization.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.

Short answer: Restricts database access to specific IP ranges or VNets. Ensures only authorized clients can connect.

Real-world example (ShopNest)

ShopNest on Azure typically uses App Service + SQL Database + Blob Storage + Application Insights for monitoring.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.