AZ-305 Design business continuity solutions Practice Test 13 — 15 Questions

Question 1

Adatum Corporation runs a customer-facing API on Azure API Management (Developer tier) in the East US region. The backend is an Azure Function app (Premium plan) also in East US. The data is stored in Azure Cosmos DB (Core SQL API) with a single write region in East US. The company requires:
- RPO: 0 (zero data loss).
- RTO: 1 minute for the API to be available after a region failure.
- The solution must be fully automated.
- Cost is not a primary concern.

What DR strategy should you recommend?

Accepted Answer

Deploy an active-active architecture in East US and West US. Deploy API Management in both regions and use Azure Front Door with health probes for automatic failover. Deploy Azure Functions in both regions (Premium plan supports multi-region). Configure Cosmos DB with multi-region writes (single write region with automatic failover) and strong consistency. All traffic is active-active, with automatic failover.. Option D is correct because an active-active multi-region architecture with Cosmos DB multi-region writes (strong consistency in single write region with automatic failover) ensures zero data loss and automatic failover. API Management can be deployed in multiple regions with Azure Front Door for global load balancing and automatic failover. Azure Functions Premium plan supports multi-region deployment. Option A is wrong because Azure Site Recovery has higher RTO. Option B is wrong because passive standby has higher RTO due to manual steps. Option C is wrong because Availability Zones do not protect against regional outage.

Answer

Deploy the API Management, Functions, and Cosmos DB across two Availability Zones in East US. Use zone-redundant services. For Cosmos DB, use multi-region writes within the same region (not possible).

Answer

Deploy a passive standby in West US with a second API Management instance, a second Functions app, and a second Cosmos DB write region (multi-region writes). Use Azure Front Door with health probes to automatically route traffic. Manually failover Cosmos DB during disaster.

Answer

Deploy a passive standby in West US using Azure Site Recovery to replicate the Azure Functions and API Management. For Cosmos DB, enable a secondary read region and manual failover. Use Azure Traffic Manager to switch traffic during a disaster.

Question 2

Your company runs a critical workload on Azure Virtual Machines in a single region. You need to design a disaster recovery solution that meets a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 1 hour. The solution should minimize cost. What should you recommend?

Accepted Answer

Implement Azure Site Recovery with replication to a secondary region.. Option D is correct because Azure Site Recovery provides replication with RPO as low as 15 minutes and RTO of minutes to hours, and it is cost-effective compared to always-on replication. Option A is wrong because Azure Backup has a minimum RPO of 1 hour for VMs. Option B is wrong because read-access geo-redundant storage (RA-GRS) is for storage accounts, not VM-level recovery. Option C is wrong because an active-passive configuration with Always On availability groups requires SQL Server and is overkill for non-database workloads.

Answer

Configure Azure Backup with geo-redundant storage.

Answer

Deploy an active-passive pair of VMs using SQL Server Always On availability groups.

Answer

Use Azure Storage with read-access geo-redundant storage (RA-GRS) and failover the VMs.

Question 3

You are designing a business continuity plan for a global e-commerce platform that runs on Azure Kubernetes Service (AKS) in the West US region. The platform uses Azure SQL Database for transactional data and Azure Cache for Redis for session state. The Recovery Time Objective (RTO) for the entire platform is 10 minutes, and the Recovery Point Objective (RPO) is 5 minutes. Which combination of technologies would meet these requirements with the least operational overhead?

Accepted Answer

Deploy AKS clusters in two regions with Azure Front Door; configure Azure SQL Database active geo-replication; enable Azure Cache for Redis geo-replication.. Option A is correct because AKS with Azure Front Door provides global load balancing and can redirect traffic to a secondary region; Azure SQL Database active geo-replication meets the RPO of 5 seconds (less than 5 minutes) and RTO of seconds; Azure Cache for Redis geo-replication meets the RPO and RTO for session state. Option B is wrong because Azure Site Recovery for AKS adds complexity and does not replicate Azure SQL Database or Redis natively. Option C is wrong because Azure Backup for AKS and Azure SQL Database has RPO of hours. Option D is wrong because Cosmos DB is not the current database service, and it would require application changes.

Answer

Back up AKS cluster state and Azure SQL Database using Azure Backup; restore in a secondary region during failover.

Answer

Use Azure Site Recovery to replicate the AKS cluster and Azure SQL Database to a secondary region; use Azure Redis Cache with data persistence.

Answer

Migrate the database to Azure Cosmos DB for multi-region writes; use Traffic Manager for AKS failover.

Question 4

Your company has a hybrid infrastructure with on-premises servers and Azure virtual machines. You need to design a backup strategy that includes on-premises file servers and Azure VMs. The solution must support long-term retention for compliance (7 years) and provide immediate recovery for recent versions. What should you include in the design?

Accepted Answer

Deploy Azure Backup with the Microsoft Azure Recovery Services (MARS) agent for on-premises and the Azure Backup extension for VMs.. Option C is correct because Azure Backup provides a unified backup solution for both on-premises (via MARS agent) and Azure VMs, with support for long-term retention using Backup Vault and Recovery Services vault. Option A is wrong because Azure Site Recovery is for disaster recovery, not backup. Option B is wrong because Azure File Sync syncs files but does not provide backup capabilities. Option D is wrong because Azure Storage snapshots are not a comprehensive backup solution with centralized management.

Answer

Use Azure Storage account snapshots for on-premises files and Azure VM snapshots for VMs.

Answer

Set up Azure File Sync to sync on-premises files to Azure Files, then back up the Azure file shares.

Answer

Use Azure Site Recovery for both on-premises servers and Azure VMs.

Question 5

You are designing a disaster recovery solution for a tier-1 application that runs on Azure SQL Managed Instance. The application has a Recovery Time Objective (RTO) of 30 seconds and a Recovery Point Objective (RPO) of 10 seconds. The solution must also support failover during planned maintenance. What should you recommend?

Accepted Answer

Set up a failover group for Azure SQL Managed Instance between two regions with a secondary replica.. Option B is correct because failover groups for Azure SQL Managed Instance provide automatic failover with RPO of 0 (no data loss) and RTO of about 10 seconds, meeting the strict requirements. Option A is wrong because auto-failover groups for SQL Database are different and not for Managed Instance. Option C is wrong because active geo-replication is for SQL Database, not Managed Instance. Option D is wrong because Azure Site Recovery does not replicate SQL Managed Instance natively and cannot meet the low RPO/RTO.

Answer

Configure auto-failover groups with a readable secondary in another region for Azure SQL Database.

Answer

Implement Azure Site Recovery to replicate the SQL Managed Instance to a secondary region.

Answer

Use active geo-replication for Azure SQL Managed Instance with a secondary in another region.

Question 6

Your company runs a mission-critical application on Azure Virtual Machines that requires a Recovery Time Objective (RTO) of 5 minutes and a Recovery Point Objective (RPO) of 1 minute. The application uses a single VM with a managed disk. You need to design a disaster recovery solution that meets these requirements with minimal cost. What should you recommend?

Accepted Answer

Use Azure Site Recovery to replicate the VM to a secondary region with a recovery plan.. Option C is correct because Azure Site Recovery can replicate Azure VMs with a disk-level RPO of 5 seconds and RTO of minutes, meeting the requirements. Option A is wrong because Azure Backup has a minimum RPO of 1 hour for VMs. Option B is wrong because read-access geo-redundant storage does not replicate the VM configuration. Option D is wrong because a secondary VM with replication would be more expensive than Azure Site Recovery's pay-as-you-go model.

Answer

Configure Azure Backup for the VM with a 1-minute backup frequency.

Answer

Store the managed disk in geo-redundant storage and use Azure Resource Manager templates to redeploy.

Answer

Deploy a second VM in a secondary region and use continuous replication with Azure Migrate.

Question 7

Your organization has a critical application running on Azure Virtual Machines. You need to design a backup and disaster recovery strategy. Which TWO options should you include in your design to meet a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 1 hour? (Choose two.)

Accepted Answer

Implement Azure Site Recovery with replication to a secondary region.. Option B and Option D are correct. Azure Site Recovery can replicate VMs with an RPO as low as 15 minutes and an RTO of minutes to hours. Azure Backup can be used for additional long-term retention, but to meet the RPO/RTO requirements, Site Recovery is necessary. Option A is wrong because Azure Backup has a default RPO of 1 hour for VMs. Option C is wrong because Traffic Manager does not provide RPO/RTO guarantees. Option E is wrong because Azure Files is not a VM backup solution.

Answer

Store data in Azure Files and use Azure File Sync for replication.

Answer

Use Azure Traffic Manager to distribute traffic between regions.

Answer

Configure Azure Backup for daily backups with geo-redundant storage.

Question 8

You are designing a business continuity solution for a global SaaS application that runs on Azure Kubernetes Service (AKS) with Azure Cosmos DB as the database. The solution must support multi-region writes and automatic failover with zero data loss. Which THREE components should you include in your design? (Choose three.)

Accepted Answer

Deploy Azure Cache for Redis Enterprise with active geo-replication.. Option A, Option C, and Option D are correct. Azure Cosmos DB with multi-region writes supports zero data loss during failover. Azure Front Door provides global load balancing and automatic failover for the AKS clusters. Azure Cache for Redis Enterprise with active geo-replication provides low-latency cache with multi-region writes. Option B is wrong because Azure Traffic Manager is not required when using Front Door. Option E is wrong because Azure SQL Database does not support multi-region writes natively like Cosmos DB.

Answer

Use Azure Traffic Manager to route traffic to the primary region.

Answer

Use Azure SQL Database with failover groups for the database tier.

Question 9

Your company is developing an application that will store transactional data in Azure SQL Database. The application has a Recovery Point Objective (RPO) of 5 seconds and a Recovery Time Objective (RTO) of 30 seconds. Which TWO Azure features should you recommend? (Choose two.)

Accepted Answer

Create an auto-failover group with a readable secondary in another Azure region.. Option A and Option D are correct. Auto-failover groups with active geo-replication provide synchronous replication with RPO of 0 and RTO of about 30 seconds. Option B is wrong because Azure Backup has an RPO of 5 minutes for SQL Database (full backup frequency). Option C is wrong because Azure Site Recovery does not replicate SQL Database natively. Option E is wrong because zone-redundant availability zones protect against datacenter failures, not regional failures, and RTO is not guaranteed.

Answer

Use Azure Site Recovery to replicate the SQL Database to a secondary region.

Answer

Deploy the Azure SQL Database across availability zones in the primary region.

Answer

Perform Azure SQL Database backups every 5 seconds using Azure Backup.

Question 10

Refer to the exhibit. You are reviewing the replication health of an on-premises Hyper-V VM replicated to Azure using Azure Site Recovery. The JSON output shows the properties of the replicated item. The replication health is 'Normal', but the last recovery point is from 2 hours ago. You need to ensure the Recovery Point Objective (RPO) of 15 minutes is met. What is the most likely cause of the issue?

Accepted Answer

The replication frequency is set to 30 minutes or more.. Option B is correct because the 'currentRecoveryPoint' timestamp being 2 hours old indicates that replication is not occurring frequently enough. Azure Site Recovery for Hyper-V VMs uses a replication frequency that can be set to 30 seconds, 5 minutes, or 15 minutes. If the last recovery point is 2 hours old, the replication frequency is likely set to a longer interval or there is a connectivity issue. Option A is wrong because the replication health is Normal, so provider registration is fine. Option C is wrong because a failed snapshot would show a different health status. Option D is wrong because the exhibit shows the recovery site is EastUS, indicating configuration is set.

Answer

The VM's application-consistent snapshot is failing.

Answer

The target region is not correctly configured in the recovery plan.

Answer

The Hyper-V host is not registered with the Recovery Services vault.

Question 11

Your company, Contoso Ltd., runs a critical line-of-business application on Azure Virtual Machines in the West Europe region. The application uses Azure SQL Database (Business Critical tier) for data storage. The compliance team requires a Recovery Point Objective (RPO) of 5 seconds and a Recovery Time Objective (RTO) of 10 seconds for the database tier. For the compute tier, the RPO is 1 minute and RTO is 5 minutes. The application must remain available during planned maintenance and regional outages. You have been asked to design the business continuity solution. You need to recommend the most cost-effective solution that meets all requirements. What should you recommend?

Accepted Answer

Set up auto-failover group for Azure SQL Database with a secondary in North Europe; deploy AKS in both regions with Azure Front Door for global load balancing.. Option C is correct because Auto-failover groups with active geo-replication provide synchronous replication (RPO=0) and automatic failover (RTO~10 seconds) for Azure SQL Database Business Critical tier. AKS with Azure Front Door provides fast failover for compute tier. Option A is wrong because Azure SQL Database backup restore takes too long. Option B is wrong because Traffic Manager lacks health probe granularity and AKS failover is slower. Option D is wrong because SQL Server Always On requires additional licensing and management overhead.

Answer

Configure active geo-replication for Azure SQL Database; deploy AKS in two regions with Azure Traffic Manager; use manual failover scripts.

Answer

Use Azure SQL Database backup with point-in-time restore for the database; deploy AKS in West Europe and use Azure Traffic Manager for failover to a secondary cluster in North Europe.

Answer

Deploy SQL Server Always On availability groups on Azure VMs in two regions; use Azure Site Recovery for the VMs; use Azure Front Door for load balancing.

Question 12

You are the Azure architect for a financial services company. The company runs a proprietary trading application on Azure Virtual Machines in the East US region. The application stores state in Azure Cache for Redis (Standard tier) and uses Azure SQL Database (General Purpose tier) for persistent data. The business has set a Recovery Point Objective (RPO) of 1 hour and a Recovery Time Objective (RTO) of 2 hours for the entire application. The solution must minimize costs. You have been asked to design a disaster recovery plan. Which approach should you recommend?

Accepted Answer

Use Azure Site Recovery to replicate the VMs to a secondary region. For Azure SQL Database, enable geo-redundant backup storage and use geo-restore during failover. For Azure Cache for Redis, document the reconfiguration steps to point to a new cache in the secondary region.. Option A is correct because Azure Site Recovery for VMs meets the 1-hour RPO and 2-hour RTO at low cost; Azure SQL Database geo-redundant backup restore can achieve RTO of 1 hour (using geo-restore) and RPO of 1 hour; for Redis, reconfiguration is acceptable. Option B is wrong because Azure Traffic Manager alone does not provide replication. Option C is wrong because active geo-replication for SQL Database is more expensive than geo-restore. Option D is wrong because Azure Backup for VMs has minimum RPO of 1 hour but restore time may exceed 2 hours.

Answer

Use Azure Traffic Manager to distribute traffic to both regions with active-passive configuration. Configure Azure SQL Database auto-failover groups. Deploy a second Azure Cache for Redis in the secondary region.

Answer

Configure Azure SQL Database active geo-replication with a readable secondary. Use Azure Site Recovery for VMs. Enable Azure Cache for Redis data persistence and replicate the cache using Azure Files.

Answer

Back up the VMs using Azure Backup with a 1-hour frequency. Use Azure SQL Database backup with short-term retention. Manually recreate the Redis cache in the secondary region.

Question 13

Your organization runs a web application on Azure App Service (Standard tier) in the West US region. The application uses Azure Blob Storage for static content and Azure SQL Database (Standard tier) for dynamic data. The compliance requirements specify a Recovery Point Objective (RPO) of 1 hour and a Recovery Time Objective (RTO) of 4 hours. You need to design a disaster recovery solution that meets these requirements with minimal cost. Which option should you recommend?

Accepted Answer

Configure App Service backup to a geo-redundant storage account. Use geo-redundant storage (GRS) for Blob Storage. Enable geo-restore for Azure SQL Database.. Option B is correct because geo-redundant storage for Blob Storage is cost-effective and meets RPO; geo-restore for SQL Database meets RPO and RTO; App Service backup and restore in a secondary region meets RTO. Option A is wrong because Azure Site Recovery is for VMs, not App Service. Option C is wrong because active geo-replication for SQL Database is more expensive than needed. Option D is wrong because Azure Traffic Manager alone does not provide data replication.

Answer

Deploy App Service in two regions with Azure Traffic Manager. Use Azure Site Recovery to replicate the App Service and SQL Database. Enable geo-redundant storage for Blob Storage.

Answer

Deploy App Service in two regions with Azure Front Door. Use active geo-replication for Azure SQL Database. Enable read-access geo-redundant storage (RA-GRS) for Blob Storage.

Answer

Use Azure Traffic Manager to distribute traffic. Manually copy Blob Storage to a secondary region. Use Azure SQL Database export to bacpac and import in secondary region.

Question 14

Contoso is a global e-commerce company that runs its platform on Azure Kubernetes Service (AKS) with Istio service mesh. The application uses Azure Cosmos DB (API for MongoDB) with multi-region writes enabled. The platform also uses Azure Cache for Redis Enterprise for session caching. The business requires a Recovery Time Objective (RTO) of 30 seconds and a Recovery Point Objective (RPO) of 0 for all tiers. You need to design a disaster recovery solution that meets these requirements with high availability. What should you recommend?

Accepted Answer

Deploy AKS in two regions with Azure Front Door. Use Azure Cosmos DB with multi-region writes. Use Azure Cache for Redis Enterprise with active geo-replication.. Option D is correct because Azure Cosmos DB multi-region writes provides zero data loss; Azure Front Door provides fast failover for AKS; Azure Cache for Redis Enterprise active geo-replication supports multi-region writes with zero data loss. Option A is wrong because Cosmos DB single-region writes cannot achieve RPO=0 during a regional outage. Option B is wrong because Azure Traffic Manager is DNS-based and slower. Option C is wrong because Azure SQL Database does not support multi-region writes with RPO=0.

Answer

Deploy AKS in two regions with Azure Traffic Manager. Use Azure Cosmos DB with multi-region writes. Use Azure Cache for Redis Enterprise with active geo-replication.

Answer

Deploy AKS in two regions with Azure Front Door. Use Azure Cosmos DB with a single write region and auto-failover. Use Azure Cache for Redis Standard with geo-replication.

Answer

Use Azure SQL Database with auto-failover groups for the database tier. Deploy AKS in two regions with Azure Front Door. Use Azure Cache for Redis Enterprise with active geo-replication.

Question 15

Your company runs a Windows-based application on Azure Virtual Machines in the Brazil South region. The application uses Azure Files for shared storage and Azure SQL Database (Hyperscale tier) for the database. The business requires a Recovery Point Objective (RPO) of 15 minutes and a Recovery Time Objective (RTO) of 30 minutes for the entire application. The solution must be cost-effective and leverage Azure-native services. You have been asked to design the disaster recovery strategy. Which option should you recommend?

Accepted Answer

Use Azure Site Recovery to replicate the VMs to a secondary region. Configure geo-redundant storage (GRS) for Azure Files. For Azure SQL Database Hyperscale, enable geo-restore and test restore procedures.. Option A is correct because Azure Site Recovery for VMs provides 15-minute RPO and fast RTO; geo-redundant storage for Azure Files meets RPO; Azure SQL Database Hyperscale geo-restore can achieve RTO within 30 minutes. Option B is wrong because Azure Backup for VMs has slower RTO. Option C is wrong because Azure File Sync is for hybrid scenarios, not DR. Option D is wrong because active geo-replication for SQL Database is more expensive than geo-restore.

Answer

Deploy a second set of VMs in a secondary region. Use Azure File Sync to keep Azure Files in sync. Use Azure SQL Database failover groups with a readable secondary.

Answer

Back up the VMs using Azure Backup with a 15-minute frequency. Use Azure File Sync to replicate Azure Files to a secondary region. Use Azure SQL Database backup with point-in-time restore.

Answer

Use Azure Site Recovery for VMs. Use Azure File Sync for Azure Files. Use active geo-replication for Azure SQL Database.