AZ-300 Azure High Availability & Disaster Recovery 1 — Questions and Answers
Question 1: Which Azure feature replicates virtual machines to a secondary region and enables failover in the event of a regional outage?
- Azure Backup
- Azure Site Recovery (Correct answer)
- Azure Traffic Manager
- Azure Load Balancer
Correct answer: Azure Site Recovery
Azure Site Recovery (ASR) continuously replicates VMs to a secondary region and orchestrates failover to restore workloads during a disaster.
Question 2: What is the difference between an Availability Set and an Availability Zone in Azure?
- Availability Sets protect against datacenter failures; Availability Zones protect against rack failures
- Availability Zones protect against datacenter failures; Availability Sets protect against rack and power failures within a datacenter (Correct answer)
- Both protect against the same types of failures but at different cost tiers
- Availability Zones are only available for storage accounts
Correct answer: Availability Zones protect against datacenter failures; Availability Sets protect against rack and power failures within a datacenter
Availability Zones are physically separate datacenters within a region (protecting against full datacenter failure), while Availability Sets distribute VMs across fault and update domains within a single datacenter.
Question 3: A company needs their Azure VMs in an Availability Set to have a guaranteed uptime SLA. What is the minimum number of VMs required to receive the 99.95% SLA?
- 1
- 2 (Correct answer)
- 3
- 4
Correct answer: 2
Azure guarantees a 99.95% SLA for VMs in an Availability Set only when at least two instances are deployed across separate fault and update domains.
Question 4: Which Azure Traffic Manager routing method directs users to the endpoint with the lowest latency?
- Priority
- Weighted
- Performance (Correct answer)
- Geographic
Correct answer: Performance
The Performance routing method in Traffic Manager measures latency to all endpoints and directs users to the one with the lowest network latency.
Question 5: What does Recovery Point Objective (RPO) represent in a disaster recovery plan?
- The maximum time allowed to restore a system after a disaster
- The maximum acceptable amount of data loss measured in time (Correct answer)
- The cost associated with recovering from a disaster
- The number of replicas maintained for a database
Correct answer: The maximum acceptable amount of data loss measured in time
RPO defines how much data an organization can afford to lose, expressed as the maximum age of data that must be recovered — essentially the backup frequency requirement.
Question 6: Which Azure regions are considered 'paired regions' and what is their primary benefit?
- Regions in the same country, providing legal data residency guarantees
- Regions in the same continent, reducing data transfer costs
- Geographically separated regions within the same geopolitical boundary, ensuring updates are not deployed simultaneously (Correct answer)
- Regions that share the same Availability Zones for cross-zone redundancy
Correct answer: Geographically separated regions within the same geopolitical boundary, ensuring updates are not deployed simultaneously
Azure paired regions are at least 300 miles apart within the same geopolitical area; Microsoft staggers planned updates between paired regions and prioritizes one in a pair during regional outages.
Question 7: You need to protect Azure VMs with a daily backup and retain recovery points for 30 days. Which service should you use?
- Azure Site Recovery
- Azure Blob Storage with geo-redundancy
- Azure Backup with a Recovery Services vault (Correct answer)
- Azure Managed Disk snapshots via ARM templates
Correct answer: Azure Backup with a Recovery Services vault
Azure Backup with a Recovery Services vault supports policy-based daily VM backups with configurable retention periods, making it the correct service for this requirement.
AZ-300 Azure High Availability & Disaster Recovery 1
Which Azure feature replicates virtual machines to a secondary region and enables failover in the event of a regional outage?