Microsoft AZ-305  Designing Microsoft Azure Infrastructure Solutions Exam Dumps and Practice Test Questions Set 10 Q181-200

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Question 181

A company wants to deploy a multi-region web application that provides low-latency access worldwide, automatic failover, and secure authentication. Which combination of services should they implement?

Answer

A) Azure Front Door, Azure App Service with Auto Scale, and Azure AD B2C
B) Azure Load Balancer, Azure VMs, and SQL Server
C) Azure Application Gateway, Bastion, and PostgreSQL single instance
D) Azure CDN and Table Storage

Explanation

The correct answer is A) Azure Front Door, Azure App Service with Auto Scale, and Azure AD B2C. Designing a multi-region, high-performance web application requires addressing three main aspects: global traffic management, scalability, and security. Azure Front Door provides global HTTP/HTTPS load balancing and automatically routes traffic to the nearest healthy backend, ensuring minimal latency for users across the globe. It also supports SSL termination, caching, and WAF (Web Application Firewall) integration, which enhances security by protecting against common web vulnerabilities. Azure App Service with Auto Scale ensures that the application can dynamically adjust its compute resources based on incoming traffic. This automatic scaling prevents service degradation during traffic spikes while reducing costs by avoiding over-provisioning. The App Service platform also supports deployment slots, blue/green deployments, and zero-downtime updates, which is critical for production-grade applications. For authentication and access control, Azure AD B2C provides enterprise-grade identity management, supporting social logins, multi-factor authentication, and compliance with regulatory requirements such as GDPR and HIPAA. Compared to alternatives like VMs with Load Balancer, which require manual scaling and lack global routing, or Application Gateway and Bastion, which are regionally constrained, this architecture offers a fully managed, resilient, and scalable solution. Azure CDN and Table Storage are suitable only for static content and cannot support complex dynamic application workloads. Implementing this architecture aligns with AZ-305 objectives, demonstrating resilient, globally distributed, and secure web application design with high availability, low latency, and operational efficiency.

Question 182

A company wants to implement a serverless event-driven architecture that can process millions of IoT telemetry messages per day, with automatic scaling and secure access to secrets. Which service should they use?

Answer

A) Azure Functions
B) Azure Virtual Machines
C) Azure Kubernetes Service
D) Azure App Service Plan (Dedicated)

Explanation

The correct answer is A) Azure Functions. Azure Functions is a fully managed, serverless compute platform that allows enterprises to process event-driven workloads without provisioning or managing infrastructure. It scales automatically in response to triggers such as HTTP requests, Azure Blob Storage changes, Service Bus messages, and Event Grid events. For IoT workloads, this capability is essential because device telemetry can fluctuate significantly depending on usage patterns or peak operational periods. Security is critical in such architectures, and Azure Functions integrates with Key Vault and managed identities, allowing secure access to secrets, credentials, or API keys without embedding sensitive information in code. Observability and diagnostics are provided via Application Insights, enabling real-time monitoring of execution metrics, error rates, latency, and workflow performance. Additionally, Durable Functions allow orchestration of complex workflows, supporting sequential processing, fan-out/fan-in patterns, and retries to ensure reliable processing of high-volume events. Alternatives like VMs or AKS require manual scaling, higher operational overhead, and complex orchestration, while App Service Plan (Dedicated) lacks dynamic scaling in response to events. This solution meets AZ-305 objectives by providing a resilient, scalable, and secure serverless architecture, minimizing operational overhead while ensuring enterprise-grade performance and availability.

Question 183

A company wants a globally distributed NoSQL database for real-time telemetry processing with support for multi-region writes, low-latency reads, and elastic scaling. Which service is optimal?

Answer

A) Azure Cosmos DB
B) Azure SQL Database
C) Azure Database for PostgreSQL
D) Azure Table Storage

Explanation

The correct answer is A) Azure Cosmos DB. Cosmos DB is a fully managed, globally distributed, high-throughput database designed for mission-critical workloads that require low latency, global distribution, and high availability. Multi-region writes enable data to be ingested in the user’s local region, reducing latency, while automatic conflict resolution ensures consistency across regions. Cosmos DB provides five consistency models—strong, bounded staleness, session, consistent prefix, and eventual—allowing developers to choose the best trade-off between latency and consistency depending on the workload. Horizontal partitioning and elastic scaling via Request Units per second (RU/s) allow the database to handle millions of events per second without impacting performance. Integration with Azure Functions, Event Grid, and Stream Analytics enables the creation of real-time data pipelines for telemetry, analytics, and business intelligence. Security is enforced with encryption at rest and in transit, RBAC, private endpoints, and Key Vault integration, ensuring compliance with enterprise and regulatory standards such as HIPAA, ISO 27001, and GDPR. Compared to SQL Database, PostgreSQL, or Table Storage, Cosmos DB is uniquely suited for globally distributed, low-latency, high-throughput event-driven workloads, fully aligning with AZ-305 objectives for resilient and high-performance database solutions.

Question 184

A company needs a multi-tier web application with high availability, automatic scaling, and secure secret management. Which services should they implement?

Answer

A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault
B) Azure VMs, SQL Server, Storage Account
C) AKS with PostgreSQL single instance
D) Azure Functions with Cosmos DB

Explanation

The correct answer is A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault. Multi-tier applications require a web front-end, application layer, and database layer to be designed for scalability, reliability, and security. Azure App Service provides a fully managed PaaS environment for hosting the web and application tiers, supporting automatic scaling, deployment slots, and monitoring. Zone-redundant SQL Database ensures high availability across multiple availability zones, protecting against single-zone outages and providing built-in disaster recovery capabilities. Key Vault securely stores secrets, certificates, and API keys, accessible via managed identities, eliminating the need to hardcode credentials and improving compliance with enterprise security policies. This architecture reduces operational overhead compared to VMs or AKS while providing enterprise-grade resiliency, scalability, and security. Alternatives like Azure Functions with Cosmos DB are more suitable for stateless or NoSQL workloads and may not meet relational database requirements. This design aligns with AZ-305 objectives for secure, scalable, and highly available multi-tier architecture, providing a fully managed, resilient, and cost-effective solution.

The optimal architecture for deploying a multi-tier web application that requires high availability, automatic scaling, and secure secret management is a combination of Azure App Service, Azure SQL Database with zone-redundancy, and Azure Key Vault. Multi-tier applications typically include a presentation layer, an application logic layer, and a database layer, all of which need to be designed for performance, resilience, and security. Azure App Service provides a fully managed platform as a service environment for hosting web applications and APIs. It supports automatic scaling based on demand, ensuring that the application can handle fluctuations in traffic without manual intervention. Deployment slots enable staged rollouts, allowing developers to test new versions before promoting them to production, which reduces the risk of downtime during updates. App Service also integrates with Azure Monitor and Application Insights for monitoring and alerting, providing full visibility into application performance and health.

The database layer is implemented using Azure SQL Database with a zone-redundant configuration. This ensures that the database is replicated across multiple availability zones within a region, providing high availability even in the event of a zone-level failure. Built-in disaster recovery, automated backups, and patching reduce operational complexity while ensuring data durability and integrity.

Azure Key Vault securely stores secrets, certificates, and API keys. By using managed identities, applications can access sensitive information without embedding credentials in code, enhancing security and compliance with enterprise and regulatory policies. Key Vault supports auditing, secret rotation, and integration with other Azure services, ensuring a robust and secure workflow for sensitive data management.

Alternative architectures are less suitable for this scenario. Virtual Machines with SQL Server and a Storage Account require manual scaling, patching, and high-availability configuration, increasing operational overhead. Azure Kubernetes Service with a single-instance PostgreSQL database lacks built-in high availability and requires additional management. Azure Functions with Cosmos DB is better suited for stateless, event-driven, or NoSQL workloads and does not provide relational database capabilities necessary for traditional multi-tier applications.

By combining Azure App Service, Key Vault, and zone-redundant SQL Database, organizations can implement a secure, highly available, and scalable multi-tier application architecture. This design aligns with AZ-305 best practices, providing enterprise-grade resilience, operational efficiency, and cost-effective management for mission-critical applications.

Question 185

A company wants a highly available, globally distributed e-commerce platform with low-latency access and secure authentication. Which services are optimal?

Answer

A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C
B) Azure Load Balancer, SQL Server on VMs, and VPN Gateway
C) Azure Application Gateway, Bastion, and PostgreSQL single instance
D) Azure CDN and Table Storage

Explanation

The correct answer is A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C. For globally distributed e-commerce applications, performance, reliability, and security are essential. Azure Front Door provides global load balancing, SSL termination, caching, and failover routing, ensuring low latency for users worldwide. SQL Database with geo-replication ensures data replication across regions, providing disaster recovery and high availability. Azure AD B2C handles secure authentication, including social login, multi-factor authentication, and compliance with regulations such as GDPR. Alternatives like VMs or regional databases cannot provide automatic global failover and dynamic scaling, while CDN and Table Storage only support static content. This architecture meets AZ-305 objectives by delivering a resilient, globally distributed, and secure web platform optimized for low-latency and high availability.

Question 186

A company wants a serverless event-driven workflow to handle millions of messages daily with automatic scaling, secure secrets, and observability. Which service should they use?

Answer

A) Azure Functions
B) Azure VMs
C) Azure Kubernetes Service
D) Azure App Service Plan (Dedicated)

Explanation

The correct answer is A) Azure Functions. Azure Functions allows companies to implement serverless, event-driven processing for high-volume workloads, including IoT telemetry, order processing, and real-time analytics. It automatically scales in response to demand, reducing operational overhead and ensuring high availability. Functions can respond to triggers from HTTP requests, blob storage, queues, and Event Grid. Security is enhanced via Key Vault and managed identities, ensuring secure access to secrets. Observability is provided by Application Insights, which monitors execution metrics, performance, and errors. Durable Functions enable orchestration of complex workflows, supporting sequential execution and fan-out/fan-in patterns. Compared to VMs or AKS, Azure Functions reduces infrastructure management, provides automatic scaling, and supports resilient, enterprise-grade serverless workflows, fully aligned with AZ-305 objectives for efficient and scalable event-driven solutions.

The most suitable service for implementing a serverless, event-driven workflow capable of handling millions of messages daily with automatic scaling, secure secrets management, and observability is Azure Functions. Azure Functions is a fully managed, serverless compute platform that allows code to execute in response to a wide range of events without requiring developers to manage infrastructure. Its automatic scaling capability ensures that workloads are processed efficiently regardless of volume, making it ideal for high-throughput scenarios such as IoT telemetry ingestion, e-commerce order processing, and real-time analytics pipelines. Because resources are consumed only when functions execute, Azure Functions provides a cost-effective model while maintaining high availability and resilience.

Azure Functions supports multiple trigger types, enabling highly flexible event-driven workflows. HTTP triggers allow serverless APIs to respond to web and mobile requests. Blob storage triggers enable automatic processing of files when they are uploaded or modified, supporting tasks such as ETL pipelines, image or document processing, and batch operations. Queue triggers, including Azure Storage Queues and Service Bus, facilitate asynchronous message processing, decoupling application components and ensuring reliable background processing even during high load. Event Grid triggers extend these capabilities further by allowing event-driven workflows that integrate with other Azure services or external systems, supporting reactive architectures and real-time data pipelines.

Security is strengthened through integration with Azure Key Vault and managed identities, allowing functions to securely access secrets, certificates, and credentials without storing them in code. Observability and monitoring are provided through Application Insights, which offers detailed metrics, logs, and alerts for performance, latency, and error tracking. Durable Functions enhance Azure Functions by enabling orchestration of long-running workflows, including sequential execution, fan-out/fan-in patterns, and stateful operations, ensuring complex processing is handled reliably and efficiently.

Alternative options are less suitable for this scenario. Virtual Machines require manual provisioning, scaling, and management, increasing operational complexity. Azure Kubernetes Service provides container orchestration but adds unnecessary management overhead for event-driven workloads. Dedicated App Service Plans lack true serverless elasticity and cannot dynamically scale in response to workload events.

By using Azure Functions, organizations can implement a secure, scalable, and resilient serverless workflow capable of processing millions of messages daily. This aligns with AZ-305 best practices for building efficient, high-performance, and event-driven cloud architectures while minimizing operational overhead.

Question 187

A company wants a multi-region, highly available web application that supports automatic scaling, low-latency global access, and secure authentication. Which combination of services should they deploy?

Answer

A) Azure Front Door, Azure App Service with Auto Scale, and Azure AD B2C
B) Azure Load Balancer, Azure VMs, and SQL Server
C) Azure Application Gateway, Bastion, and PostgreSQL single instance
D) Azure CDN and Table Storage

Explanation

The correct answer is A) Azure Front Door, Azure App Service with Auto Scale, and Azure AD B2C. For multi-region web applications, low-latency access, high availability, and security are primary concerns. Azure Front Door provides global HTTP/HTTPS load balancing, automatically routing traffic to the nearest healthy backend region, ensuring minimal latency and failover in case of regional outages. It also offers SSL offloading, caching, and Web Application Firewall (WAF) integration, which secures the application against common threats and optimizes performance. Azure App Service with Auto Scale ensures that the number of compute instances automatically adjusts based on traffic, preventing performance degradation during peak demand and reducing operational costs during low traffic periods. App Service also provides deployment slots and zero-downtime deployments, critical for enterprise-grade production applications. For authentication, Azure AD B2C provides secure identity management, supporting social logins, multi-factor authentication, and regulatory compliance requirements such as GDPR or HIPAA. Alternative architectures like VMs with Load Balancer require manual scaling and lack global routing, while Application Gateway and Bastion are regionally constrained. CDN and Table Storage only serve static content and cannot handle dynamic, transactional workloads. Implementing this architecture aligns with AZ-305 objectives by providing a resilient, secure, globally distributed, and highly available web application, capable of handling variable workloads efficiently while maintaining operational continuity.

Question 188

A company wants a serverless workflow capable of processing millions of events per day from storage, HTTP requests, and queues with automatic scaling and secure secret management. Which service is optimal?

Answer

A) Azure Functions
B) Azure Virtual Machines
C) Azure Kubernetes Service
D) Azure App Service Plan (Dedicated)

Explanation

The correct answer is A) Azure Functions. Azure Functions provides a serverless, event-driven computing platform that automatically scales to handle millions of events per day, making it ideal for workloads with unpredictable demand, such as IoT telemetry or real-time data pipelines. Triggers can come from HTTP requests, Azure Blob Storage, Service Bus queues, or Event Grid, allowing flexible integration with diverse data sources. Security is enhanced through Key Vault integration and managed identities, which enable secure retrieval of secrets and credentials at runtime without embedding sensitive information in code. Observability is achieved via Application Insights, providing metrics on execution time, failure rates, and performance, which is critical for high-volume, enterprise-scale workflows. Durable Functions allow the orchestration of complex workflows, including fan-out/fan-in patterns, sequential processing, and retries, ensuring reliable processing of workloads with variable timing and dependencies. Compared to virtual machines, AKS, or dedicated App Service Plans, Azure Functions eliminates infrastructure management, provides automatic scaling, ensures high availability, and supports cost-effective, enterprise-grade serverless workflows. This aligns with AZ-305 objectives for resilient, scalable, and secure serverless architectures, enabling organizations to focus on business logic rather than infrastructure management while maintaining performance and reliability.

The optimal service for a company seeking a serverless workflow capable of processing millions of events per day from storage, HTTP requests, and queues, while providing automatic scaling and secure secret management, is Azure Functions. Azure Functions is a fully managed, serverless compute platform that enables code execution in response to a variety of events, eliminating the need for developers to manage servers or underlying infrastructure. Its serverless architecture ensures automatic scaling based on demand, allowing the system to efficiently process variable workloads without manual intervention. This capability is particularly useful for high-volume and unpredictable workloads such as IoT telemetry ingestion, real-time analytics pipelines, and event-driven business applications.

Azure Functions supports multiple types of triggers, offering flexible integration with diverse data sources. HTTP triggers allow the creation of serverless APIs for web and mobile applications. Blob Storage triggers enable automatic processing of files when they are uploaded or modified, supporting ETL workflows, document processing, and batch data operations. Queue triggers, such as Service Bus and Storage Queues, facilitate reliable asynchronous message processing, decoupling application components and ensuring background tasks are executed efficiently. Event Grid triggers extend functionality further by allowing seamless integration with other Azure services or external systems, enabling reactive, event-driven pipelines.

Security is enhanced through integration with Azure Key Vault and managed identities, which allows functions to securely retrieve secrets, certificates, and credentials at runtime without storing sensitive information in code. Observability is provided via Application Insights, offering detailed metrics on execution performance, latency, and error rates, which is critical for monitoring high-volume, enterprise-scale workflows. Durable Functions further extend Azure Functions by supporting orchestration of complex, long-running workflows, including fan-out/fan-in patterns, sequential processing, and retries, ensuring reliable execution of tasks with dependencies or variable timing.

Alternative options are less suitable. Virtual Machines require manual scaling, patching, and maintenance. Azure Kubernetes Service provides container orchestration but introduces operational complexity for event-driven workloads. Dedicated App Service Plans lack true serverless elasticity and cannot scale dynamically in response to event volume.

By leveraging Azure Functions, organizations can implement a highly scalable, secure, and resilient serverless workflow that processes millions of events per day. This aligns with AZ-305 best practices for enterprise-grade, cost-effective, and reliable event-driven architectures while minimizing operational overhead and allowing teams to focus on business logic rather than infrastructure management.

Question 189

A company needs a globally distributed NoSQL database for real-time telemetry processing, with support for low-latency reads, multi-region writes, and elastic scaling. Which service should they implement?

Answer

A) Azure Cosmos DB
B) Azure SQL Database
C) Azure Database for PostgreSQL
D) Azure Table Storage

Explanation

The correct answer is A) Azure Cosmos DB. Cosmos DB is a globally distributed, fully managed NoSQL database designed to handle high-throughput, low-latency workloads across multiple regions. It supports multi-region writes, allowing data to be ingested locally to minimize latency while automatically handling conflict resolution across regions. Cosmos DB provides five consistency levels—strong, bounded staleness, session, consistent prefix, and eventual—allowing developers to balance performance, consistency, and latency according to workload requirements. Elastic scaling via Request Units (RU/s) ensures that the system can handle sudden spikes in traffic without affecting performance. Cosmos DB also integrates seamlessly with Azure Functions, Event Grid, and Stream Analytics, enabling real-time event-driven pipelines for telemetry, analytics, and business insights. Security is enforced through encryption at rest and in transit, private endpoints, RBAC, and Key Vault integration, meeting enterprise-grade compliance requirements like HIPAA, ISO 27001, and GDPR. Alternatives such as SQL Database, PostgreSQL, or Table Storage lack the combination of multi-region writes, global distribution, low latency, and elastic scaling required for real-time telemetry workloads. This design aligns with AZ-305 objectives, providing a resilient, high-performance, and secure database solution capable of supporting enterprise-scale, globally distributed applications.

Question 190

A company wants a multi-tier application with high availability, automatic scaling, and secure credentials management. Which services should they choose?

Answer

A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault
B) Azure VMs, SQL Server, Storage Account
C) AKS with PostgreSQL single instance
D) Azure Functions with Cosmos DB

Explanation

The correct answer is A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault. Multi-tier architectures require separate layers for presentation, business logic, and data persistence, each designed for reliability, security, and scalability. Azure App Service hosts the web and application tiers in a fully managed platform, supporting automatic scaling, deployment slots, zero-downtime updates, and integrated monitoring. Zone-redundant SQL Database ensures availability across multiple availability zones, providing resilience against single-zone outages and disaster recovery capabilities. Key Vault securely stores secrets, API keys, and certificates, accessible through managed identities, eliminating the risk of hardcoded credentials and improving regulatory compliance. Compared to VMs or AKS, this combination reduces operational overhead, provides enterprise-grade resiliency, and ensures high availability for the multi-tier application. Serverless options like Functions with Cosmos DB are suitable for stateless or NoSQL workloads but do not provide relational database features. This architecture aligns with AZ-305 objectives, demonstrating secure, scalable, and resilient multi-tier design suitable for enterprise applications requiring minimal operational effort and high reliability.

Question 191

A company wants a highly available, globally distributed e-commerce platform with low-latency access and secure authentication. Which services are optimal?

Answer

A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C
B) Azure Load Balancer, SQL Server on VMs, and VPN Gateway
C) Azure Application Gateway, Bastion, and PostgreSQL single instance
D) Azure CDN and Table Storage

Explanation

The correct answer is A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C. For a globally distributed e-commerce platform, performance, reliability, and security are paramount. Azure Front Door provides global HTTP/HTTPS load balancing, caching, SSL offload, and failover routing, ensuring low latency and continuous availability for users worldwide. SQL Database with geo-replication maintains data redundancy across regions, providing automatic failover and disaster recovery while maintaining transactional consistency. Azure AD B2C handles secure authentication, supporting social login, multi-factor authentication, and compliance with privacy regulations. Alternatives such as VMs or regional databases lack automatic global failover and dynamic scaling, while CDN and Table Storage are limited to static content delivery. This solution fully aligns with AZ-305 objectives, demonstrating a resilient, globally distributed, secure e-commerce platform with operational efficiency and low-latency access.

Question 192

A company wants a serverless event-driven workflow capable of processing millions of messages daily, with automatic scaling, secure secrets access, and observability. Which service should they deploy?

Answer

A) Azure Functions
B) Azure VMs
C) Azure Kubernetes Service
D) Azure App Service Plan (Dedicated)

Explanation

The correct answer is A) Azure Functions. Azure Functions provides serverless, event-driven computing that automatically scales in response to incoming events, ideal for high-volume IoT, analytics, or e-commerce workloads. It can respond to triggers from HTTP requests, Blob storage events, queues, and Event Grid. Security is enhanced via Key Vault integration and managed identities, ensuring secure access to sensitive information without hardcoding secrets. Observability and monitoring are provided via Application Insights, enabling enterprises to track execution metrics, performance, latency, and failures. Durable Functions allow orchestration of complex workflows, including sequential execution, fan-out/fan-in patterns, and retry logic, ensuring reliability for critical workloads. Compared to VMs or AKS, Azure Functions reduces operational overhead, scales automatically, and provides high availability, fully aligning with AZ-305 objectives for efficient, resilient, and secure serverless event-driven architectures.

Question 193

A company needs a globally distributed NoSQL database for real-time telemetry processing, with low-latency reads, multi-region writes, and elastic scaling. Which service should they implement?

Answer

A) Azure Cosmos DB
B) Azure SQL Database
C) Azure Database for PostgreSQL
D) Azure Table Storage

Explanation

The correct answer is A) Azure Cosmos DB. Cosmos DB is a fully managed, globally distributed database built for high-throughput, low-latency workloads. Multi-region writes allow data to be ingested in local regions for minimal latency while ensuring consistency across regions through automatic conflict resolution. Cosmos DB provides five consistency levels—strong, bounded staleness, session, consistent prefix, and eventual—allowing developers to select the right trade-off between performance and consistency. Elastic scaling via Request Units (RU/s) ensures high performance even under massive workloads, while horizontal partitioning allows handling of millions of events per second. Integration with Azure Functions, Event Grid, and Stream Analytics supports real-time telemetry pipelines. Security is enforced through encryption at rest and in transit, private endpoints, RBAC, and Key Vault integration, meeting enterprise compliance requirements. Compared to SQL Database, PostgreSQL, or Table Storage, Cosmos DB uniquely provides global distribution, low-latency, multi-region writes, and elastic throughput, fully aligning with AZ-305 objectives for resilient and high-performance database design.

Question 194

A company wants to deploy a multi-tier application with high availability, automatic scaling, and secure secret management. Which services are recommended?

Answer

A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault
B) Azure VMs, SQL Server, Storage Account
C) AKS with PostgreSQL single instance
D) Azure Functions with Cosmos DB

Explanation

The correct answer is A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault. Multi-tier architectures require separation of presentation, business logic, and data tiers to optimize performance, scalability, and security. Azure App Service provides a fully managed platform for hosting the web and application tiers, supporting automatic scaling based on load, deployment slots for zero-downtime releases, and integrated monitoring for performance, errors, and usage patterns. Zone-redundant SQL Database ensures high availability across multiple availability zones, protecting against single-zone failures and providing automated disaster recovery with minimal operational overhead. Key Vault securely manages API keys, certificates, and secrets, accessible via managed identities, eliminating hardcoded credentials and enhancing compliance with security standards like ISO 27001, HIPAA, and GDPR. Compared to VMs, which require manual patching, scaling, and high availability configurations, or AKS with PostgreSQL, which requires operational management of containers, this combination provides a fully managed, resilient, and scalable solution. Azure Functions with Cosmos DB is better suited for stateless or NoSQL workloads and may not meet relational consistency or multi-tier transaction requirements. Implementing this architecture aligns with AZ-305 objectives by designing a secure, highly available, and scalable multi-tier application, capable of handling enterprise-level workloads efficiently while reducing operational complexity. It addresses key design principles including availability, resilience, security, operational efficiency, and cost-effectiveness, making it suitable for mission-critical applications where downtime or security breaches could have substantial business impact. The architecture also supports continuous integration and deployment, enabling DevOps teams to deploy updates safely without impacting users. Monitoring and diagnostics through Azure Monitor and Application Insights provide end-to-end visibility, allowing proactive identification of performance bottlenecks or security incidents, thereby enhancing operational resilience. By combining these managed services, the company achieves a balance between performance, security, and maintainability, aligning perfectly with the AZ-305 goal of designing enterprise-grade, highly available infrastructure solutions.

Question 195

A company wants a globally distributed e-commerce platform with low-latency access, high availability, and secure authentication. Which services should they deploy?

Answer

A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C
B) Azure Load Balancer, SQL Server on VMs, and VPN Gateway
C) Azure Application Gateway, Bastion, and PostgreSQL single instance
D) Azure CDN and Table Storage

Explanation

The correct answer is A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C. For globally distributed e-commerce platforms, latency, availability, and security are critical for ensuring a seamless customer experience and protecting sensitive data. Azure Front Door provides global HTTP/HTTPS load balancing and automatically routes users to the nearest healthy backend region, reducing latency and ensuring failover in case of regional outages. It also integrates with Web Application Firewall (WAF), providing protection against common threats like SQL injection and cross-site scripting, and SSL offloading for better performance. SQL Database with geo-replication maintains synchronous or asynchronous copies of data in multiple regions, supporting automatic failover and disaster recovery while maintaining transactional consistency. Azure AD B2C provides secure, scalable identity management, supporting social logins, multi-factor authentication, and regulatory compliance. Compared to alternatives such as VMs with Load Balancer, which require manual failover configuration and do not offer global low-latency routing, or Application Gateway and Bastion, which are regionally constrained, this architecture ensures resilience, scalability, and global reach. CDN and Table Storage only serve static content and are insufficient for dynamic, transactional e-commerce workloads. Implementing this solution aligns with AZ-305 objectives by delivering a resilient, secure, and globally distributed application, optimized for performance, reliability, and operational efficiency, while reducing management overhead. The combination of these services also enables compliance with security and privacy regulations, provides integrated monitoring and logging via Application Insights, and supports DevOps practices through deployment slots and continuous delivery. By integrating these managed services, the company achieves high availability, minimal latency, and a robust, secure infrastructure, fully meeting enterprise-grade design standards emphasized in the AZ-305 exam.

Question 196

A company wants a serverless, event-driven workflow capable of processing millions of messages per day with automatic scaling, secure secrets access, and observability. Which service is appropriate?

Answer

A) Azure Functions
B) Azure VMs
C) Azure Kubernetes Service
D) Azure App Service Plan (Dedicated)

Explanation

The correct answer is A) Azure Functions. Azure Functions provides a fully managed serverless compute platform for processing high-volume event-driven workloads without requiring infrastructure management. It automatically scales in response to demand, whether the events come from HTTP triggers, Blob storage changes, Service Bus queues, or Event Grid. Security is ensured through Key Vault integration and managed identities, enabling secure handling of secrets, credentials, and API keys without exposing sensitive information in code. Observability is provided by Application Insights, which tracks execution times, failure rates, and latency, allowing proactive performance tuning and error management. Durable Functions enable complex orchestration, including sequential execution, fan-out/fan-in patterns, and retry logic, ensuring reliable processing even in high-volume environments. Compared to VMs or AKS, Azure Functions reduces operational overhead, provides automatic scaling, and ensures high availability while maintaining cost efficiency, as you pay only for actual execution. This design aligns with AZ-305 objectives by creating a resilient, scalable, secure, and cost-efficient serverless architecture, capable of handling enterprise-grade workloads without manual infrastructure management. Additionally, Azure Functions integrates seamlessly with other Azure services such as Cosmos DB, Event Grid, and Logic Apps, allowing organizations to build end-to-end event-driven pipelines. Monitoring, logging, and alerting capabilities ensure operational continuity, while the serverless model supports rapid iteration and deployment, making it ideal for dynamic, high-throughput scenarios such as IoT data processing, e-commerce order handling, and real-time analytics. This architecture embodies best practices for designing enterprise-ready, resilient, and scalable serverless solutions, which is a core focus of the AZ-305 exam.

Question 197

A company needs a globally distributed NoSQL database for real-time telemetry, supporting low-latency reads, multi-region writes, and elastic throughput. Which service should they deploy?

Answer

A) Azure Cosmos DB
B) Azure SQL Database
C) Azure Database for PostgreSQL
D) Azure Table Storage

Explanation

The correct answer is A) Azure Cosmos DB. Cosmos DB is a fully managed, globally distributed NoSQL database built for mission-critical, high-throughput workloads. Its multi-region write capability allows local ingestion of data to minimize latency while automatically resolving conflicts across regions. It offers five consistency levels—strong, bounded staleness, session, consistent prefix, and eventual—allowing developers to balance consistency and latency according to application requirements. Elastic scaling via Request Units (RU/s) and horizontal partitioning ensures the database can handle millions of events per second without performance degradation. Cosmos DB integrates with Azure Functions, Event Grid, and Stream Analytics to enable real-time telemetry pipelines for analytics, monitoring, and business intelligence. Security is enforced through encryption at rest and in transit, private endpoints, RBAC, and Key Vault integration, ensuring compliance with enterprise and regulatory standards. Compared to SQL Database, PostgreSQL, or Table Storage, Cosmos DB uniquely supports globally distributed workloads with low-latency access, multi-region writes, and elastic throughput, making it ideal for IoT, real-time analytics, and large-scale applications. This solution aligns with AZ-305 objectives for designing resilient, high-performing, and secure database architectures, ensuring enterprise applications can scale globally while maintaining performance, reliability, and compliance.

Question 198

A company wants a multi-tier application with high availability, automatic scaling, and secure secret management. Which architecture is recommended?

Answer

A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault
B) Azure VMs, SQL Server, Storage Account
C) AKS with PostgreSQL single instance
D) Azure Functions with Cosmos DB

Explanation

The correct answer is A) Azure App Service, Azure SQL Database zone-redundant, and Key Vault. Multi-tier application design involves separating presentation, business logic, and data tiers for improved scalability, security, and maintainability. Azure App Service hosts the web and application layers in a fully managed environment, supporting automatic scaling, deployment slots, zero-downtime updates, and integrated monitoring via Application Insights. Zone-redundant SQL Database ensures high availability across multiple availability zones, providing resilience to single-zone failures and automated disaster recovery. Key Vault provides secure management of secrets, certificates, and API keys, accessible via managed identities to reduce security risks and enhance regulatory compliance. This architecture reduces operational overhead compared to managing VMs or AKS clusters manually while ensuring enterprise-grade availability, security, and scalability. Serverless options like Functions with Cosmos DB are better suited for stateless or NoSQL workloads, whereas this combination meets relational, transactional, and multi-tier requirements, fully aligned with AZ-305 exam objectives for secure, resilient, and scalable multi-tier solutions.

Question 199

A company wants a globally distributed e-commerce platform with low-latency access, high availability, and secure authentication. Which services are optimal?

Answer

A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C
B) Azure Load Balancer, SQL Server on VMs, and VPN Gateway
C) Azure Application Gateway, Bastion, and PostgreSQL single instance
D) Azure CDN and Table Storage

Explanation

The correct answer is A) Azure Front Door, Azure SQL Database with geo-replication, and Azure AD B2C. For globally distributed e-commerce, performance, reliability, and security are essential. Azure Front Door provides global routing, caching, SSL offload, and failover, ensuring low latency and continuous availability. SQL Database geo-replication maintains data redundancy across regions, enabling automatic failover and transactional consistency. Azure AD B2C provides secure authentication, supporting social logins, multi-factor authentication, and regulatory compliance. Alternatives like VMs with Load Balancer lack automatic global failover, and CDN/Table Storage only handle static content. Implementing this solution meets AZ-305 objectives for resilient, globally distributed, secure applications, optimizing performance, availability, and operational efficiency while minimizing management overhead.

Question 200

A company wants a serverless event-driven workflow capable of processing millions of daily messages with automatic scaling, secure secrets, and observability. Which service should they deploy?

Answer

A) Azure Functions
B) Azure Virtual Machines
C) Azure Kubernetes Service
D) Azure App Service Plan (Dedicated)

Explanation

The correct answer is A) Azure Functions. Azure Functions is a fully managed, serverless compute service designed for event-driven workloads. It automatically scales in response to incoming events, supporting millions of messages daily without manual intervention. Triggers can include HTTP requests, Blob storage events, queues, and Event Grid, providing flexibility for diverse enterprise workflows. Security is enhanced through Key Vault and managed identities, ensuring safe access to secrets and credentials. Observability is provided by Application Insights, allowing monitoring of execution metrics, latency, and errors to ensure operational continuity. Durable Functions support orchestration of complex workflows, including sequential processing, fan-out/fan-in patterns, and retry mechanisms, ensuring high reliability for critical applications. Compared to VMs, AKS, or dedicated App Service Plans, Azure Functions reduces operational overhead, automatically scales, and provides high availability, fully aligning with AZ-305 objectives for resilient, scalable, and secure serverless architectures. Integration with other Azure services enables building end-to-end event-driven pipelines for IoT, analytics, and real-time processing, demonstrating enterprise-grade resilience, security, and scalability.