AZ-305 Design business continuity solutions Practice Question
This AZ-305 practice question tests your understanding of design business continuity solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. A key principle to apply: azure Site Recovery provides continuous replication of Azure VMs.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company runs a critical application on Azure virtual machines in the West US region. They need a disaster recovery solution that replicates VMs to East US with a recovery point objective (RPO) of 15 minutes and a recovery time objective (RTO) of 2 hours. They also need to perform non-disruptive disaster recovery drills. Which Azure service should they use?
Why wrong: Azure Backup provides backup and restore capabilities but does not support replication for failover or test failover drills for disaster recovery.
B
Azure Site Recovery
Azure Site Recovery replicates VMs to a secondary region, supports flexible RPO (e.g., 15 minutes), and enables test failover for non-disruptive drills.
C
Azure Traffic Manager
Why wrong: Traffic Manager is a DNS-based traffic load balancer that routes users to healthy endpoints. It does not replicate VMs or manage failover at the infrastructure level.
D
Azure Front Door
Why wrong: Front Door is a global application delivery network with load balancing and WAF, but it does not replicate or failover virtual machines.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Site Recovery
Azure Site Recovery (ASR) orchestrates replication, failover, and failback of Azure VMs between regions. It supports RPOs as low as 15 minutes (continuous replication with crash-consistent or app-consistent snapshots) and RTOs of 2 hours or less, and it enables non-disruptive disaster recovery drills via test failover that isolates replicated VMs in a separate virtual network without impacting production.
Key principle: Azure Site Recovery provides continuous replication of Azure VMs.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Azure Backup
Why it's wrong here
Azure Backup provides backup and restore capabilities but does not support replication for failover or test failover drills for disaster recovery.
✓
Azure Site Recovery
Why this is correct
Azure Site Recovery replicates VMs to a secondary region, supports flexible RPO (e.g., 15 minutes), and enables test failover for non-disruptive drills.
Related concept
Azure Site Recovery provides continuous replication of Azure VMs.
✗
Azure Traffic Manager
Why it's wrong here
Traffic Manager is a DNS-based traffic load balancer that routes users to healthy endpoints. It does not replicate VMs or manage failover at the infrastructure level.
✗
Azure Front Door
Why it's wrong here
Front Door is a global application delivery network with load balancing and WAF, but it does not replicate or failover virtual machines.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Backup (which is for backup/restore with longer RPOs) with Azure Site Recovery (which is for replication and failover with low RPO/RTO), or they mistakenly think a traffic-routing service like Traffic Manager or Front Door can provide disaster recovery replication without actually moving or copying VM data.
Detailed technical explanation
How to think about this question
Azure Site Recovery uses continuous replication at the disk level, sending changes to a cache storage account in the source region and then to a target region every few seconds, achieving an RPO of 15 minutes for crash-consistent recovery points and as low as 1 minute for app-consistent points using Volume Shadow Copy Service (VSS). During a test failover, ASR creates a full copy of the replicated VMs in an isolated virtual network, allowing validation of recovery processes without affecting production workloads or incurring downtime. In real-world scenarios, organizations often combine ASR with Azure Traffic Manager to automatically redirect user traffic after a failover, but ASR alone handles the replication and recovery orchestration.
KKey Concepts to Remember
Azure Site Recovery provides continuous replication of Azure VMs.
It supports low RPO and RTO for disaster recovery.
ASR enables orchestrated failover and failback between regions.
Non-disruptive test failovers can be performed to validate DR plans.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Azure Site Recovery provides continuous replication of Azure VMs.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Review azure Site Recovery provides continuous replication of Azure VMs., then practise related AZ-305 questions on the same topic to reinforce the concept.
Design business continuity solutions — This question tests Design business continuity solutions — Azure Site Recovery provides continuous replication of Azure VMs..
What is the correct answer to this question?
The correct answer is: Azure Site Recovery — Azure Site Recovery (ASR) orchestrates replication, failover, and failback of Azure VMs between regions. It supports RPOs as low as 15 minutes (continuous replication with crash-consistent or app-consistent snapshots) and RTOs of 2 hours or less, and it enables non-disruptive disaster recovery drills via test failover that isolates replicated VMs in a separate virtual network without impacting production.
What should I do if I get this AZ-305 question wrong?
Review azure Site Recovery provides continuous replication of Azure VMs., then practise related AZ-305 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Azure Site Recovery provides continuous replication of Azure VMs.
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