AZ-900 Practice Test 23 — 15 Questions

Question 1

Which cloud concept refers to the ability to recover quickly from a failure without impacting user experience?

Accepted Answer

Reliability. Reliability is the cloud concept that ensures a system can recover quickly from failures, such as hardware crashes or network outages, without noticeable impact on end users. This is achieved through redundancy, fault tolerance, and automated failover mechanisms, which maintain service continuity and uptime as defined in SLAs.

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Scalability

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Agility

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Cost efficiency

Question 2

What does the Azure Pricing Calculator help you do?

Accepted Answer

Estimate the cost of Azure services before deployment. The Azure Pricing Calculator is a web-based tool that allows you to estimate the cost of Azure services before deployment. You configure the services you plan to use (e.g., virtual machines, storage accounts, databases) and specify details like region, tier, and usage hours to generate a projected monthly cost. This helps with budgeting and cost planning, not with analyzing past spending or comparing competitors.

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Analyze historical spending on existing Azure resources

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Compare Azure prices against AWS and Google Cloud prices

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Automatically optimize spending by terminating unused resources

Question 3

Which Azure compute service runs identical VM instances in multiple Availability Zones with automatic load balancing?

Accepted Answer

Azure Virtual Machine Scale Sets across Availability Zones. Azure Virtual Machine Scale Sets (VMSS) can be configured to span multiple Availability Zones, automatically distributing VM instances across those zones for high availability. When combined with an Azure Load Balancer or Application Gateway, the scale set provides automatic load balancing of incoming traffic across all instances, meeting the requirement exactly.

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Azure Availability Sets

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Azure Dedicated Host

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Azure Batch

Question 4

A company needs to run a legacy application that requires full control over the operating system, including custom kernel modules. They also need to ensure high availability with multiple instances. Which Azure compute service should they use?

Accepted Answer

Azure Virtual Machines. Azure Virtual Machines (VMs) are the correct choice because they provide full control over the operating system, including the ability to install custom kernel modules, and support high availability through availability sets or zones. This is essential for legacy applications that require OS-level customization and fault-tolerant deployment.

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Azure App Service

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Azure Functions

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Azure Container Instances

Question 5

A company wants to enforce a naming convention for all Azure resources. For example, all resources must start with 'Contoso-'. They want to automatically audit and deny creation of resources that do not follow the naming convention. Which Azure Policy effect should they use?

Accepted Answer

Deny. The Deny effect is correct because it actively prevents the creation of Azure resources that do not match the defined naming convention rule, such as requiring all resources to start with 'Contoso-'. This effect evaluates the resource against the policy rule during deployment and rejects the request with a 403 Forbidden status if the condition is not met, ensuring compliance before the resource is created.

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Audit

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Modify

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Append

Question 6

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.

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To deploy VMs across multiple Azure regions for global availability

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To automatically scale the number of VMs based on CPU utilization

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To provide dedicated physical servers for a single organization

Question 7

A startup wants to run a web application without purchasing or managing any servers. They only want to upload their code and let the cloud provider handle everything from the runtime to scaling. Which cloud service model best fits this requirement?

Accepted Answer

Platform as a Service (PaaS). Platform as a Service (PaaS) is the correct model because it provides a fully managed hosting environment where the startup can deploy their web application code without needing to provision or manage underlying servers, operating systems, or runtime infrastructure. Azure App Service is a prime example of PaaS that handles automatic scaling, load balancing, and patching, allowing developers to focus solely on code.

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Infrastructure as a Service (IaaS)

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Software as a Service (SaaS)

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Function as a Service (FaaS)

Question 8

A company has multiple Azure subscriptions for different departments. The governance team needs to ensure that every new subscription is automatically provisioned with a consistent set of resources, including a predefined network topology, mandatory Azure Policy assignments (e.g., allowed locations), and specific role-based access control (RBAC) assignments for the security team. The solution must be repeatable, version-controlled, and allow the team to update the defined artifacts and apply updates to existing subscriptions. Which Azure service should the team use to define and deploy this collection of governance artifacts?

Accepted Answer

Azure Blueprints. Azure Blueprints is the correct service because it enables the orchestrated deployment of a repeatable set of Azure resources, policies, and RBAC assignments as a single, version-controlled artifact. Unlike Azure Policy alone, Blueprints can include resource templates (e.g., network topology) and RBAC assignments, and it supports updating existing subscriptions by publishing new versions of the blueprint and assigning them to subscriptions.

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Azure Policy

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Azure Management Groups

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Azure Resource Manager templates

Question 9

Which Azure service provides near real-time data analytics using SQL queries on streaming data from sources like IoT devices?

Accepted Answer

Azure Stream Analytics. Azure Stream Analytics is a fully managed, real-time analytics service designed to process high-velocity streaming data from sources like IoT devices, social media feeds, or application logs. It uses a SQL-like query language to perform near real-time analytics, aggregations, and pattern matching on data as it arrives, making it the correct choice for this scenario.

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Azure Synapse Analytics

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Azure Data Factory

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Azure Log Analytics

Question 10

Which Azure support plan provides a dedicated Technical Account Manager and a 15-minute response time for critical business impact issues?

Accepted Answer

Enterprise. The Enterprise support plan is the only Azure plan that includes a dedicated Technical Account Manager (TAM) and guarantees a 15-minute response time for critical business impact issues (severity A). This plan is designed for large-scale enterprise customers who require proactive guidance and rapid escalation handling.

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Business

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Enterprise On-Ramp

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Developer

Question 11

Which type of cloud service model would a company typically use for hosting their own custom web application where they manage the code but not the server operating system?

Accepted Answer

PaaS (Platform as a Service). PaaS (Platform as a Service) is correct because the company manages only the application code and data, while the cloud provider handles the underlying server operating system, runtime, middleware, and infrastructure. This aligns with the scenario where the customer controls the custom web application but not the OS.

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IaaS (Infrastructure as a Service)

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SaaS (Software as a Service)

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FaaS (Function as a Service)

Question 12

Which Azure service provides an enterprise-grade CI/CD pipeline for building, testing, and deploying applications?

Accepted Answer

Azure DevOps. Azure DevOps is the correct answer because it provides a comprehensive, enterprise-grade CI/CD pipeline service that integrates build, test, and deployment stages for applications. It includes Azure Pipelines, which supports multi-platform builds and releases, along with Azure Repos, Azure Boards, and other tools for end-to-end DevOps lifecycle management.

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GitHub Actions

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Azure Kubernetes Service

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Azure App Service

Question 13

Which Azure storage redundancy option replicates data across multiple availability zones within a single region?

Accepted Answer

Zone-Redundant Storage (ZRS). Zone-Redundant Storage (ZRS) is the correct answer because it synchronously replicates data across three Azure availability zones within a single region, ensuring durability even if an entire zone fails. This provides higher availability than LRS (which replicates within a single data center) and lower latency than GRS/RA-GRS (which replicate to a secondary region).

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Locally Redundant Storage (LRS)

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Geo-Redundant Storage (GRS)

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Read-Access Geo-Redundant Storage (RA-GRS)

Question 14

Which Azure service provides a globally distributed data warehouse for running complex analytics queries at petabyte scale?

Accepted Answer

Azure Synapse Analytics. Azure Synapse Analytics is the correct answer because it is a limitless analytics service that brings together enterprise data warehousing and Big Data analytics. It provides a globally distributed, massively parallel processing (MPP) engine capable of running complex queries across petabyte-scale data, with built-in support for T-SQL, Apache Spark, and data integration.

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Azure SQL Database

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Azure HDInsight

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Azure Databricks

Question 15

A company has multiple Azure subscriptions for different departments. They want to receive budget alerts when spending in any subscription exceeds 80% of the allocated amount. Which Azure feature enables them to set up these alerts?

Accepted Answer

Azure Cost Management + Billing budgets. Azure Cost Management + Billing budgets allow you to create budget alerts based on actual or forecasted costs. You can set a budget amount and configure alerts to trigger when costs reach a specified percentage (e.g., 80%) of that budget. This directly meets the requirement to receive alerts when spending in any subscription exceeds 80% of the allocated amount.

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Azure Advisor

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Azure Monitor

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Azure Policy