AZ-900 Describe Azure architecture and services Practice Test 20 — 15 Questions

Question 1

Which Azure service provides a virtual machine image repository for sharing custom VM images across an organization?

Accepted Answer

Azure Compute Gallery. Azure Compute Gallery (formerly Shared Image Gallery) is the correct service because it is specifically designed to store, manage, and share custom VM images across subscriptions, tenants, and regions within an organization. It supports both Windows and Linux images, allows versioning, and enables replication to multiple regions for consistent deployment.

Answer

Azure Container Registry

Answer

Azure Artifacts

Answer

Azure Marketplace

Question 2

Which Azure AI service can read and extract text, key-value pairs, and tables from documents and forms?

Accepted Answer

Azure Form Recognizer. Azure Form Recognizer (now part of Azure AI Document Intelligence) is specifically designed to extract text, key-value pairs, and tables from documents and forms using prebuilt or custom models. It goes beyond simple OCR by understanding the structure of forms, such as field labels and their corresponding values, making it the correct choice for this scenario.

Answer

Azure Computer Vision OCR

Answer

Azure Text Analytics

Answer

Azure Cognitive Search

Question 3

Which Azure service enables the creation of event-driven architectures by reacting to state changes in Azure resources?

Accepted Answer

Azure Event Grid. Azure Event Grid is the correct service because it is a fully managed event routing service that enables event-driven architectures by reacting to state changes in Azure resources. It uses a publish-subscribe model where events from Azure services (e.g., blob storage, resource groups) are sent to subscribers like Azure Functions or webhooks, allowing automatic reactions to changes such as resource creation or deletion.

Answer

Azure Service Bus

Answer

Azure Event Hubs

Answer

Azure Monitor Alerts

Question 4

What is the purpose of Azure Availability Sets?

Accepted Answer

To protect VMs from hardware failures and planned maintenance within a single datacenter. Azure Availability Sets protect VMs from hardware failures and planned maintenance within a single datacenter by grouping VMs into fault domains (to isolate against rack-level failures) and update domains (to sequence planned maintenance reboots). This ensures at least one VM instance remains available during Azure infrastructure updates or unexpected hardware issues.

Answer

To deploy VMs across multiple Azure regions for global availability

Answer

To automatically scale the number of VMs based on CPU utilization

Answer

To provide dedicated physical servers for a single organization

Question 5

Which Azure service provides pre-built, customizable chatbot capabilities that can be integrated into applications and websites?

Accepted Answer

Azure Bot Service. Azure Bot Service is the correct answer because it provides a dedicated environment for building, testing, deploying, and managing intelligent bots that interact naturally with users via channels like web chat, Microsoft Teams, and Facebook Messenger. It includes the Bot Framework SDK for custom logic and pre-built templates for common scenarios like FAQ bots, making it the primary Azure service for chatbot capabilities.

Answer

Azure Logic Apps

Answer

Azure Communication Services

Answer

Azure Cognitive Search

Question 6

Which Azure service provides source control, CI/CD pipelines, project management, and artifact management in a single platform?

Accepted Answer

Azure DevOps. Azure DevOps is the correct answer because it is a comprehensive Microsoft platform that integrates source control (Git or TFVC), CI/CD pipelines (Azure Pipelines), project management (Azure Boards with Scrum/Kanban), and artifact management (Azure Artifacts) into a single, unified service. This all-in-one approach enables teams to manage the entire application lifecycle without needing separate tools for each function.

Answer

GitHub Enterprise

Answer

Azure App Service

Answer

Azure Resource Manager

Question 7

Which Azure service enables you to connect to an Azure virtual machine using a web browser without exposing RDP/SSH ports to the internet?

Accepted Answer

Azure Bastion. Azure Bastion is a fully managed PaaS service that provides secure and seamless RDP/SSH connectivity to Azure virtual machines directly from the Azure portal using a web browser. It eliminates the need for public IP addresses on VMs and does not expose RDP/SSH ports to the internet, as all traffic is tunneled through the Azure backbone network over TLS.

Answer

Azure VPN Gateway Point-to-Site

Answer

Azure AD Application Proxy

Answer

Azure Firewall Just-In-Time access

Question 8

Which Azure service provides a fully managed, cloud-based backup solution for protecting Azure VMs, SQL databases, and on-premises servers?

Accepted Answer

Azure Backup. Azure Backup is the correct service because it provides a fully managed, cloud-based backup solution specifically designed to protect Azure VMs, SQL databases, and on-premises servers. It leverages the Azure Backup vault to store recovery points and supports policy-based scheduling, long-term retention, and application-consistent backups for these workloads.

Answer

Azure Site Recovery

Answer

Azure Archive Storage

Answer

Azure Blob Storage snapshots

Question 9

Which Azure service provides intelligent search capabilities with AI-powered features like OCR, entity recognition, and key phrase extraction?

Accepted Answer

Azure Cognitive Search. Azure Cognitive Search (now Azure AI Search) is the correct answer because it is a cloud search-as-a-service solution that integrates AI-powered capabilities such as OCR (optical character recognition), entity recognition, and key phrase extraction via built-in cognitive skills. These skills enrich the indexing pipeline, allowing unstructured data to be transformed into searchable, structured content without custom ML code.

Answer

Azure Form Recognizer

Answer

Azure Language Understanding

Answer

Azure Text Analytics

Question 10

What type of data does Azure Table Storage store?

Accepted Answer

Structured NoSQL data in a key-attribute entity model. Azure Table Storage is a NoSQL key-attribute store that stores structured, schema-less data. Each entity is a set of properties (attributes) with a partition key and row key, enabling fast access to semi-structured data like user profiles or device metadata.

Answer

Unstructured binary data like images and videos

Answer

Relational data with complex joins and foreign keys

Answer

Files shared via SMB protocol across Windows machines

Question 11

Which Azure service provides a managed, serverless SQL database that scales automatically and pauses when not in use?

Accepted Answer

Azure SQL Database Serverless. Azure SQL Database Serverless is the correct answer because it is a compute tier for single databases that automatically scales compute resources based on workload demand and pauses the database during periods of inactivity, charging only for storage when paused. This aligns directly with the question's requirement for a managed, serverless SQL database that scales automatically and pauses when not in use.

Answer

Azure SQL Database General Purpose tier

Answer

Azure Cosmos DB Serverless

Answer

Azure SQL Managed Instance

Question 12

Which Azure service provides a fully managed, cloud-hosted Kubernetes environment for AI and machine learning workloads?

Accepted Answer

Azure Kubernetes Service with GPU nodes. Azure Kubernetes Service (AKS) with GPU nodes is the correct answer because it provides a fully managed Kubernetes cluster that can be configured with GPU-enabled virtual machines, making it ideal for running AI and machine learning workloads that require accelerated computing. AKS handles the control plane, patching, and scaling, while allowing you to deploy containerized ML models or training jobs using Kubernetes orchestration.

Answer

Azure Machine Learning compute clusters

Answer

Azure Batch AI

Answer

Azure Neural Network Computing

Question 13

Which Azure service provides network address translation for outbound internet connectivity from private subnets without public IP addresses on individual resources?

Accepted Answer

Azure NAT Gateway. Azure NAT Gateway is the correct service because it is specifically designed to provide outbound internet connectivity for resources in private subnets without requiring public IP addresses on individual VMs. It uses source network address translation (SNAT) to map private IPs to a single public IP or prefix, enabling outbound traffic while preventing inbound connections from the internet.

Answer

Azure Load Balancer with outbound rules

Answer

Azure Firewall

Answer

Azure VPN Gateway

Question 14

Which Azure service acts as a central networking hub connecting multiple virtual networks and on-premises networks together?

Accepted Answer

Azure Virtual WAN. Azure Virtual WAN is a networking service that provides a centralized hub-and-spoke architecture, enabling connectivity between multiple virtual networks (VNets) and on-premises networks through a single managed hub. It aggregates VPN, ExpressRoute, and VNet-to-VNet connections, simplifying routing and policy management across hybrid and multi-site environments.

Answer

Azure VNet Peering

Answer

Azure ExpressRoute

Answer

Azure Private Link

Question 15

Which Azure database service provides a fully managed MariaDB database in the cloud?

Accepted Answer

Azure Database for MariaDB. Azure Database for MariaDB is the correct answer because it is the specific Azure service designed to provide a fully managed, enterprise-ready MariaDB database in the cloud. MariaDB is a community-developed fork of MySQL, and Azure offers a dedicated managed service for it, including built-in high availability, automated backups, and scaling, without requiring you to manage the underlying infrastructure.

Answer

Azure Database for MySQL

Answer

Azure SQL Database

Answer

Azure Database for PostgreSQL