AZ-305 Design business continuity solutions Practice Test 12 — 15 Questions

Question 1

Your company runs a critical web application 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 must be cost-effective for a planned failover test. What should you do?

Accepted Answer

Configure Azure Site Recovery (ASR) with replication to a paired secondary region and perform regular test failovers.. Option C is correct because Azure Site Recovery with replication intervals as low as 30 seconds can meet the RPO of 15 minutes, and with pre-staged resources, the RTO of 1 hour is achievable. It is cost-effective for testing because replication can be paused and test failover uses isolated networks without affecting production. Option A is wrong because Azure Backup's typical RPO is 1 day and RTO is hours. Option B is wrong because Availability Zones protect within a region, not across regions. Option D is wrong because read-only replicas do not provide failover capability for compute.

Answer

Create a read-only replica of the VMs in another region using Azure SQL Database geo-replication.

Answer

Deploy the VMs across two Azure Availability Zones within the same region.

Answer

Use Azure Backup with daily backups to a Recovery Services vault in a paired region.

Question 2

You are designing a business continuity solution for a globally distributed SaaS application that uses Azure Cosmos DB for its operational store. The application must survive a complete regional outage with zero data loss and automatic failover. What should you use?

Accepted Answer

Configure Cosmos DB with a single write region, strong consistency, and enable automatic failover to a secondary region.. Option D is correct because Cosmos DB multi-region writes with the strong consistency mode in a single-region write configuration ensures no data loss (RPO=0) and automatic failover via the service-managed failover policy. Option A is wrong because multi-region writes with eventual consistency can result in data loss. Option B is wrong because a single-region write with eventual consistency has an RPO > 0. Option C is wrong because Azure SQL Database geo-replication is not the right service.

Answer

Configure a single write region in Cosmos DB with eventual consistency and manual failover.

Answer

Enable multi-region writes in Cosmos DB with eventual consistency and automatic failover.

Answer

Use Azure SQL Database with active geo-replication and automatic failover.

Question 3

A company uses Azure Backup to protect on-premises file servers via the Azure Backup Server (MABS). They want to ensure backups are retained for 10 years for compliance. What backup tier should they use?

Accepted Answer

Azure Backup with GFS retention policy for monthly and yearly points. Option B is correct because Azure Backup supports long-term retention (up to 99 years) using the Backup vault's Grandfather-Father-Son (GFS) retention policy with monthly and yearly points. Option A is wrong because Azure Site Recovery is for replication, not backup retention. Option C is wrong because the warm storage tier is for short-term retention. Option D is wrong because Azure Files is not a backup retention feature.

Answer

Azure Backup using the warm storage tier

Answer

Azure Files share snapshots

Answer

Azure Site Recovery

Question 4

Your organization runs a critical application on Azure VMs that must be highly available within a region. The application is stateful and requires shared storage. You need to design a solution that can automatically recover from a VM failure with minimal downtime. What should you include in the design?

Accepted Answer

Deploy the VMs in an availability set and use Azure Shared Disks for the stateful data.. Option A is correct because an availability set provides VM redundancy and a shared disk allows persistent storage that can be attached to the standby VM. Option B is wrong because Availability Zones provide cross-zone redundancy but not shared storage. Option C is wrong because Azure Files does not support direct attach to VMs. Option D is wrong because Azure Backup does not provide automatic failover.

Answer

Deploy a single VM with premium storage and Azure Backup for recovery.

Answer

Deploy the VMs in different Availability Zones and use Azure NetApp Files for storage.

Answer

Use Azure Site Recovery to replicate the VM to a secondary region.

Question 5

You are designing a business continuity plan for a financial services company that uses Azure SQL Database for its transactional workloads. The solution must meet an RPO of 5 seconds and an RTO of 30 seconds during a regional outage. What should you use?

Accepted Answer

Azure SQL Database with active geo-replication and automatic failover. Option C is correct because Azure SQL Database failover groups with active geo-replication provide an RPO of 5 seconds and RTO of about 30 seconds when using automatic failover. Option A is wrong because auto-failover groups have an RPO of 5 seconds. Option B is wrong because Azure SQL Managed Instance failover groups have a higher RTO. Option D is wrong because Azure Database for PostgreSQL is not the same service.

Answer

Azure Database for PostgreSQL with read replicas in another region

Answer

Azure SQL Database auto-failover group with a secondary in a paired region

Answer

Azure SQL Managed Instance with failover group

Question 6

Your company has an Azure subscription with a single virtual network. You need to design a solution to back up Azure VMs to meet a 7-day retention policy. The backup data must be stored in a separate region for compliance. What should you use?

Accepted Answer

Azure Backup with cross-region restore (CRR) enabled. Option D is correct because Azure Backup can be configured with cross-region restore (CRR) to store backup data in a paired region. Option A is wrong because Azure Site Recovery is for replication, not backup. Option B is wrong because Azure Backup's default is geo-redundant storage (GRS) which replicates to a paired region. Option C is wrong because Azure Files snapshots are for file shares, not VMs.

Answer

Azure Site Recovery with replication to a secondary region

Answer

Azure File Share snapshots stored in a different region

Answer

Azure Backup with default geo-redundant storage (GRS) in the same region

Question 7

You are designing a high-availability solution for a stateful application that uses Azure NetApp Files (ANF) for persistent storage. The application must withstand a zonal failure within a region. What should you do?

Accepted Answer

Use Azure NetApp Files cross-zone replication to replicate data between availability zones.. Option B is correct because ANF cross-zone replication (preview) replicates volumes across zones synchronously (with some lag) to provide zonal resilience. Option A is wrong because ANF doesn't support Availability Zones directly. Option C is wrong because Azure Files is not ANF. Option D is wrong because Azure Backup is not for real-time failover.

Answer

Use Azure Files with zone-redundant storage (ZRS) and SMB multi-channel.

Answer

Use Azure Backup for ANF with daily snapshots stored in a different zone.

Answer

Deploy the application in an Availability Set and use ANF volumes with zone-redundant storage (ZRS).

Question 8

Your company has a critical application that uses Azure Kubernetes Service (AKS) in a single region. You need to design a disaster recovery solution that can automatically fail over to a secondary region in the event of a regional outage. The application data is stored in Azure Cosmos DB. What should you do?

Accepted Answer

Deploy a secondary AKS cluster in another region, use Azure Traffic Manager for global load balancing, and enable Cosmos DB multi-region writes.. Option A is correct because AKS can be deployed in multiple regions, and Azure Traffic Manager can direct traffic to the secondary region. Cosmos DB multi-region writes ensure data availability. Option B is wrong because Azure Front Door does not provide AKS failover capability. Option C is wrong because Azure Site Recovery does not support AKS. Option D is wrong because Azure Backup does not provide failover.

Answer

Use Azure Front Door to route traffic to the primary AKS cluster and enable Cosmos DB automatic failover.

Answer

Use Azure Backup for AKS with cross-region restore and Cosmos DB geo-redundancy.

Answer

Replicate the AKS cluster to another region using Azure Site Recovery.

Question 9

A company wants to ensure that their Azure SQL Database can continue to serve read-write traffic if the primary region becomes unavailable. They require minimal data loss. What should they implement?

Accepted Answer

Configure an auto-failover group with a secondary in another region. Option C is correct because an auto-failover group with active geo-replication provides automated failover with minimal data loss. Option A is wrong because read-scale replicas are for read-only. Option B is wrong because Azure SQL Database does not use Availability Zones for cross-region DR. Option D is wrong because Azure Backup does not provide failover.

Answer

Use Azure Backup with cross-region restore

Answer

Deploy the database across two Availability Zones

Answer

Read-scale replicas in the same region

Question 10

You are designing a disaster recovery plan for an Azure virtual machine running a critical application. The solution must meet an RPO of 1 hour and an RTO of 4 hours. Which TWO actions should you take? (Choose TWO.)

Accepted Answer

Enable Azure Site Recovery for the VM with replication to a secondary region.. Options B and D are correct. Azure Site Recovery can replicate VMs with an RPO as low as 30 seconds and RTO of a few hours. Using a Recovery Services vault with GRS ensures geo-redundancy. Option A is wrong because Azure Backup has a higher RPO. Option C is wrong because Availability Zones do not provide cross-region DR. Option E is wrong because Azure Front Door is for traffic distribution, not VM replication.

Answer

Deploy the VM in an Availability Set and use premium storage.

Answer

Configure Azure Backup with daily snapshots stored in a Recovery Services vault.

Answer

Use Azure Front Door to distribute traffic between the primary and secondary regions.

Question 11

A company wants to ensure that their Azure Storage account containing blobs is protected against accidental deletion or corruption. The solution must enable recovery of previous versions up to 30 days. Which TWO features should they enable? (Choose TWO.)

Accepted Answer

Blob versioning. Options A and C are correct. Blob soft delete allows recovery of deleted blobs, and versioning keeps previous versions of blobs. Together, they provide protection against deletion and corruption with 30-day retention. Option B is wrong because point-in-time restore is for Azure Files. Option D is wrong because change feed tracks changes but does not enable recovery. Option E is wrong because Azure Backup for blobs is an alternative but not the combination requested.

Answer

Change feed

Answer

Azure Backup for Azure Blobs

Answer

Point-in-time restore for Azure Files

Question 12

You are designing a disaster recovery solution for a multi-tier web application on Azure VMs. The solution must meet an RPO of 15 minutes and an RTO of 1 hour. The application includes a SQL Server database. Which THREE actions should you take? (Choose THREE.)

Accepted Answer

Use Azure Premium SSD managed disks for the VMs to ensure low latency replication.. Options A, C, and E are correct. Azure Site Recovery can replicate the VMs with low RPO. For SQL Server, Always On Availability Groups provide automatic failover with minimal data loss. Using premium storage ensures performance. Option B is wrong because Azure Backup has a higher RPO. Option D is wrong because read-scale replicas do not provide failover.

Answer

Use Azure Backup for the SQL Server database with 1-hour backup frequency.

Answer

Deploy read-scale replicas of the SQL Server in the secondary region.

Question 13

Refer to the exhibit. An administrator configured Azure Site Recovery replication for a VM using the policy shown. The VM workload is a critical database that requires application-consistent snapshots every 30 minutes to meet compliance. What is the issue with the current configuration?

Accepted Answer

The application-consistent snapshot frequency is 60 minutes, which is too high (should be 30 minutes).. Option B is correct because the application-consistent snapshot frequency is set to 60 minutes, which does not meet the requirement of 30 minutes. Option A is wrong because the recovery point retention is 1440 minutes (24 hours), which is sufficient. Option C is wrong because Standard_LRS is acceptable for replication. Option D is wrong because the target region eastus2 is valid.

Answer

The recovery point retention is set too low (1440 minutes).

Answer

The target region eastus2 is not a valid paired region for the source.

Answer

The storage account type is Standard_LRS; it should be Premium_LRS.

Question 14

Contoso Ltd. is a global e-commerce company running its online store on Azure. The application consists of:
- Frontend: Azure App Service (Windows) in West US.
- Backend: Azure Kubernetes Service (AKS) cluster in West US.
- Database: Azure SQL Database (General Purpose, S2) in West US.
- Cache: Azure Cache for Redis (Standard C1) in West US.
- Storage: Azure Blob Storage (LRS) for product images.

Business continuity requirements:
- RPO: 5 minutes for the database.
- RTO: 1 hour for the entire application.
- The solution must survive a complete West US region outage.
- Budget is limited; minimize additional costs.

What should you recommend as the primary DR strategy?

Accepted Answer

Deploy a secondary region (East US) with a passive AKS cluster (minimal node count), a standby App Service plan (same tier), and a secondary Azure SQL Database in an auto-failover group. Use Azure Traffic Manager for frontend and configure Azure Cache for Redis with geo-replication. For Blob Storage, enable geo-redundant storage (GRS).. Option C is correct because Azure SQL Database auto-failover group with a secondary in a paired region (e.g., East US) meets the 5-minute RPO (active geo-replication with synchronous mode) and 1-hour RTO. For AKS and App Service, you can deploy a minimal standby cluster and App Service plan in the secondary region, and use Azure Traffic Manager for global load balancing. Azure Cache for Redis can be deployed with geo-replication. Option A is wrong because Azure Site Recovery for the entire environment would be more expensive and may not meet the database RPO. Option B is wrong because Azure Backup has an RPO of at least 1 hour. Option D is wrong because Availability Zones do not protect against a regional outage.

Answer

Use Azure Backup for the database with 5-minute log backup frequency. For the app, use Azure App Service backup with frequency to a secondary region. For AKS, back up persistent volumes using Azure Backup. Restore everything in a secondary region during disaster.

Answer

Deploy the entire application across two Azure Availability Zones within West US. Use zone-redundant storage for blobs, zone-redundant App Service plan, and zone-redundant AKS. For SQL Database, use a zone-redundant configuration. For Redis, use Enterprise tier with zone redundancy.

Answer

Use Azure Site Recovery to replicate all VMs (including AKS nodes) to a secondary region. For the database, use Azure SQL Database active geo-replication. For Azure Cache for Redis, replicate data via geo-replication. Use Azure Traffic Manager for frontend traffic routing.

Question 15

Fabrikam Inc. runs a file-sharing service used by 500 employees globally. The service is deployed on Azure VMs in the North Europe region. The VMs store data on Azure Files shares (Standard performance tier) mounted via SMB. The company's business continuity policy requires:
- RPO: 1 hour for any data loss.
- RTO: 4 hours to restore service after a regional disaster.
- All data must be backed up and recoverable in a different region.
- Budget is a concern; prefer cost-effective solutions.

Currently, there is no backup in place. You need to design a solution. What should you do?

Accepted Answer

Configure Azure Backup for the Azure Files shares with a backup policy of 1-hour frequency. Also back up the VMs using Azure Backup with a 1-hour policy. Store backups in a Recovery Services vault with geo-redundant storage (GRS). Enable cross-region restore.. Option B is correct because Azure Backup for Azure Files can schedule backups every hour (meeting 1-hour RPO) and store them in a Recovery Services vault with geo-redundant storage (GRS) to recover in another region. For the VMs, Azure Backup can also protect them with a 1-hour frequency. Cross-region restore enables recovery in a secondary region. Option A is wrong because Azure Site Recovery is more expensive and may not be needed for this RTO. Option C is wrong because Azure Files snapshots are manual and do not provide cross-region recovery. Option D is wrong because Azure File Sync is for sync, not backup.

Answer

Set up Azure Site Recovery (ASR) for the VMs and Azure Files. Replicate to a secondary region (West Europe). Use ASR recovery plans to orchestrate failover.

Answer

Use Azure Files share snapshots taken every hour and store them in a separate storage account in the same region. For VM backup, use Azure Backup with daily frequency. In a disaster, deploy new VMs and restore from snapshots.

Answer

Implement Azure File Sync between the Azure Files share and an on-premises file server. For disaster recovery, failover to the on-premises server.