AZ-300 Azure App Services & Containers 1 — Questions and Answers
Question 1: Which Azure App Service feature allows you to run a new version of your app alongside production and swap them with no downtime?
- WebJobs
- Deployment Slots (Correct answer)
- Traffic Manager
- Custom Domains
Correct answer: Deployment Slots
Deployment Slots let you stage a new version, warm it up, then swap it into production instantly with no downtime and the ability to roll back.
Question 2: Which Azure container service provides a fully managed Kubernetes environment without requiring cluster infrastructure management?
- Azure Container Instances
- Azure Kubernetes Service (AKS) (Correct answer)
- Azure Container Apps
- Azure Service Fabric
Correct answer: Azure Kubernetes Service (AKS)
Azure Kubernetes Service (AKS) manages the Kubernetes control plane and simplifies deployment, scaling, and operations of containerized applications.
Question 3: What is the purpose of Azure Container Instances (ACI)?
- Managed Kubernetes cluster
- Run containers on-demand without managing infrastructure, billed per second (Correct answer)
- Container image registry
- Serverless function execution
Correct answer: Run containers on-demand without managing infrastructure, billed per second
ACI provides the fastest and simplest way to run a container in Azure — no VMs, no orchestrator — billed by vCPU and memory per second.
Question 4: Which App Service plan tier is required to use VNet Integration for outbound traffic from an Azure Web App?
- Free
- Shared
- Basic
- Standard or higher (Correct answer)
Correct answer: Standard or higher
VNet Integration for outbound connectivity requires at least the Standard App Service Plan tier (or Premium for more VNet features).
Question 5: What is the function of an Azure Container Registry (ACR)?
- Run containers in production
- Store, manage, and geo-replicate Docker container images and OCI artifacts (Correct answer)
- Monitor container health
- Provide Kubernetes control plane
Correct answer: Store, manage, and geo-replicate Docker container images and OCI artifacts
Azure Container Registry is a private registry for storing and managing Docker images and Helm charts, with built-in geo-replication and security scanning.
Question 6: Which Azure App Service feature enables automatic scaling of app instances based on HTTP request queue length or CPU percentage?
- Autoscale (Correct answer)
- Deployment Slots
- Hybrid Connections
- Always On
Correct answer: Autoscale
Azure App Service Autoscale triggers scale-out or scale-in based on metrics like CPU usage or HTTP queue depth, adjusting instance count automatically.
AZ-300 Azure App Services & Containers 1
Which Azure App Service feature allows you to run a new version of your app alongside production and swap them with no downtime?