50 Free Azure Fundamentals Practice Questions (AZ-900)

Answer: c) Hybrid Cloud

Explanation: Hybrid cloud combines public cloud and private cloud resources from different providers, allowing data and applications to be shared between them. This provides flexibility and more deployment options.

Answer: b) Scalability is the ability to handle growing workloads; elasticity is the ability to scale resources up/down automatically

Explanation: Scalability is the ability to adjust resources to meet demand. Elasticity is the ability to automatically scale resources up or down based on real-time demand, paying only for what you use.

Answer: a) Operating expenses (ongoing costs for running services)

Explanation: OPEX (Operational Expenditure) covers ongoing costs like monthly cloud service fees. This contrasts with CAPEX (Capital Expenditure) which covers one-time infrastructure purchases.

Answer: c) Fixed, predictable costs

Explanation: Cloud computing typically uses a pay-as-you-go model where costs vary based on usage. While cloud costs can be optimized and forecasted, they're not fixed like on-premises infrastructure.

Answer: b) A set of data centers deployed within a latency-defined perimeter

Explanation: An Azure Region is a set of data centers deployed within a latency-defined perimeter and connected through a dedicated regional low-latency network. Each region contains multiple availability zones.

Answer: b) A physically separate location within an Azure region

Explanation: An Availability Zone is a physically separate location (with independent power, cooling, and networking) within an Azure region. Each region has at least three zones for redundancy.

Answer: a) An area containing multiple regions

Explanation: An Azure geography is a discrete market containing two or more regions that preserve data residency and compliance boundaries (e.g., Europe, North America, Asia Pacific).

Answer: c) 99.99%

Explanation: Azure provides a 99.99% SLA for compute instances deployed across two or more Availability Zones. Single-instance VMs have a 99.9% SLA (with premium storage).

Answer: c) A service that allows creating and managing a group of identical, load-balanced VMs

Explanation: Virtual Machine Scale Sets (VMSS) allow you to create and manage a group of identical, load-balanced VMs that can automatically scale based on demand.

Answer: b) CAPEX is a one-time upfront cost; OPEX is a recurring cost

Explanation: CAPEX (Capital Expenditure) involves significant one-time upfront costs (buying servers, building data centers). OPEX (Operational Expenditure) involves recurring payments for services consumed (monthly cloud bills).

Answer: b) PaaS

Explanation: Platform as a Service (PaaS) provides a platform where customers can deploy and manage their applications without managing the underlying OS, hardware, or runtime environment.

Answer: c) SaaS

Explanation: Software as a Service (SaaS) delivers fully managed software applications over the internet on a subscription basis. Examples include Office 365, Salesforce, and Dynamics 365.

Answer: c) Shared responsibility where the provider manages the infrastructure and the customer manages their data and applications

Explanation: In the shared responsibility model, the cloud provider is responsible for the security OF the cloud (physical security, hardware, networking), while customers are responsible for security IN the cloud (their data, applications, access management).

Answer: b) To define the level of service guaranteed by the provider

Explanation: An SLA (Service Level Agreement) defines the guaranteed level of service, typically including uptime/availability percentages and financial penalties if those guarantees aren't met.

Answer: b) Approximately 4.38 hours of potential downtime per year

Explanation: A 99.95% SLA means the service guarantees ~99.95% uptime. This allows approximately 4.38 hours of downtime per year (365 days × 24 hours × 0.05% = 4.38 hours).

Answer: b) Azure Container Instances (ACI)

Explanation: Azure Container Instances (ACI) allows you to run containers directly on the Azure cloud without managing the underlying infrastructure. It's a serverless container service.

Answer: b) Azure Functions

Explanation: Azure Functions is a serverless compute service that runs code in response to events. You pay only for execution time and resources consumed, without managing infrastructure.

Answer: a) Azure Blob Storage

Explanation: Azure Blob Storage is designed for storing large amounts of unstructured data including images, videos, documents, and backups. It offers three access tiers: Hot (frequent), Cool (infrequent), and Archive.

Answer: a) Azure SQL Database

Explanation: Azure SQL Database is a fully managed relational database service based on Microsoft SQL Server. It includes built-in high availability, automated backups, and intelligent performance optimization.

Answer: b) Azure Cosmos DB

Explanation: Azure Cosmos DB is a globally distributed, multi-model NoSQL database service. It supports document, key-value, graph, and column-family data models with turnkey global distribution.

Answer: b) A fully managed platform for building, deploying, and scaling web apps and APIs

Explanation: Azure App Service is a fully managed platform (PaaS) for building, deploying, and scaling web applications, RESTful APIs, and mobile backends across multiple languages (.NET, Java, Node.js, Python, PHP).

Answer: b) Azure Resource Manager (ARM)

Explanation: Azure Resource Manager is the management layer that enables you to create, update, and delete resources in your Azure subscription using declarative templates (ARM templates/Bicep).

Answer: b) A dedicated private connection to Azure from on-premises

Explanation: Azure ExpressRoute provides dedicated, private connections from on-premises infrastructure to Azure, bypassing the public internet for increased reliability, lower latency, and higher security.

Answer: b) Azure DDoS Protection

Explanation: Azure DDoS Protection provides DDoS mitigation against network and application layer attacks. Basic tier is automatically enabled; Standard tier provides advanced mitigation for VNet resources.

Answer: a) A service for distributing incoming traffic across multiple VMs

Explanation: Azure Load Balancer distributes incoming network traffic across multiple backend resources (VMs, VMSS) to ensure high availability and scalability. It operates at Layer 4 (TCP/UDP).

Answer: b) Azure DNS

Explanation: Azure DNS provides DNS domain hosting using Microsoft Azure infrastructure. It allows managing DNS records with the same credentials, APIs, and billing as other Azure services.

Answer: a) A cloud-based identity and access management service

Explanation: Azure Active Directory (Azure AD) is Microsoft's cloud-based identity and access management service. It provides authentication, single sign-on (SSO), and identity protection for cloud applications.

Answer: b) Azure Blob Storage

Explanation: Azure Blob Storage provides object storage with essentially unlimited capacity (up to 500 TB per storage account). It's designed for storing massive amounts of unstructured data.

Answer: b) Securely storing and managing secrets, keys, and certificates

Explanation: Azure Key Vault is a service for securely storing and accessing secrets (API keys, passwords), encryption keys, and certificates. It helps control and audit access to sensitive information.

Answer: a) Azure Cognitive Services (Computer Vision)

Explanation: Azure Cognitive Services - Computer Vision provides pre-built AI models for analyzing images and video (object detection, facial recognition, OCR, description generation) without ML expertise.

Answer: b) An online store for third-party solutions and services built for Azure

Explanation: The Azure Marketplace is an online store offering thousands of third-party software, services, and solutions certified to run on Azure, including VMs, databases, security tools, and SaaS applications.

Answer: b) Azure CDN

Explanation: Azure CDN (Content Delivery Network) provides global content delivery caching content at edge locations worldwide, reducing latency for users through integration with Microsoft global network.

Answer: b) Running short-lived code in response to events

Explanation: Azure Functions is a serverless compute service for running short-lived, event-driven code. Functions are triggered by events like HTTP requests, timer schedules, or queue messages.

Answer: b) Azure Site Recovery

Explanation: Azure Site Recovery replicates workloads from a primary site to a secondary location, enabling disaster recovery through failover to the secondary region when the primary site goes down.

Answer: b) Enforcing governance rules and compliance across subscriptions

Explanation: Azure Policy helps enforce organizational standards and assess compliance at scale. It can enforce rules on resource types, locations, naming conventions, and configurations.

Answer: a) A container for managing access, policies, and compliance across multiple subscriptions

Explanation: Management Groups are containers for managing access, policies, and compliance across multiple Azure subscriptions. They form a hierarchy that allows applying governance to all subscriptions under them.

Answer: a) Resource groups contain resources; subscriptions contain resource groups

Explanation: A subscription is a logical container for resource groups and billing. A resource group is a container that holds related resources for an Azure solution. Resources can only exist in one resource group.

Answer: c) A service for defining a repeatable set of Azure resources that comply with standards and patterns

Explanation: Azure Blueprints enables you to define a repeatable set of Azure resources that adhere to organizational standards, patterns, and requirements. It includes resource groups, policies, role assignments, and ARM templates.

Answer: b) Reserved Instances

Explanation: Reserved Instances offer significant discounts (up to 72%) compared to pay-as-you-go for committing to a 1-year or 3-year term. Best for predictable, steady-state workloads.

Answer: c) Spot pricing

Explanation: Azure Spot pricing offers unused compute capacity at significant discounts (up to 90%). However, capacity can be reclaimed by Azure with a 30-second notification. Best for batch jobs, dev/test, and fault-tolerant workloads.

Answer: b) Estimating the cost of Azure services before deployment

Explanation: The Azure Pricing Calculator is a web-based tool for estimating the cost of Azure services before deployment. It allows configuring services, regions, and quantities to generate cost estimates.

Answer: b) Comparing on-premises infrastructure costs to Azure costs

Explanation: The Azure TCO (Total Cost of Ownership) Calculator helps organizations estimate and compare the cost of running their on-premises infrastructure versus migrating to Azure.

Answer: b) Azure Cost Management + Billing

Explanation: Azure Cost Management + Billing provides tools for viewing, analyzing, and managing Azure costs. It includes budget alerts, cost analysis dashboards, and recommendations for cost optimization.

Answer: b) A tool for viewing service-related notifications and health status

Explanation: Azure Service Health provides a personalized view of the health of Azure services in your regions, including planned maintenance, service issues, and health advisories.

Answer: b) A service that provides best practice recommendations for cost, performance, security, and reliability

Explanation: Azure Advisor analyzes your deployed resources and provides recommendations to improve cost, performance, security, and reliability. It's like having a built-in cloud architect consultant.

Answer: b) Azure RBAC

Explanation: Azure Role-Based Access Control (RBAC) is the service for creating and managing custom roles and assigning permissions to users, groups, and applications at specific scopes (management group, subscription, resource group, resource).

Answer: b) Adding metadata to resources for organization, cost tracking, and management

Explanation: Azure Tags are name/value pairs that enable you to categorize resources by purpose, owner, environment, or other criteria. Tags are used for cost reporting, resource management, and policy enforcement.

Answer: d) Professional Direct

Explanation: Azure support plans are: Basic (included, billing support only), Developer (during business hours), Standard (24/7, 1-hour response for critical cases), and Professional Direct (proactive guidance, 1-hour response). Professional Direct is not a correct plan name.

Answer: a) Azure Monitor

Explanation: Azure Monitor provides a unified monitoring experience across Azure resources and applications. It collects metrics, logs, and traces, enabling alerting, visualization, and analysis.

Answer: b) Azure Policy

Explanation: Azure Policy is the governance tool for creating, assigning, and managing policies. It enforces rules and effects over your resources, ensuring compliance with organizational standards and cost controls.