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Azure High Availability & Disaster Recovery Flashcards

7 cards from real AZ-300 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which Azure feature replicates virtual machines to a secondary region and enables failover in the event of a regional outage?

    Answer: Azure Site Recovery

    Azure Site Recovery (ASR) continuously replicates VMs to a secondary region and orchestrates failover to restore workloads during a disaster.

  2. What is the difference between an Availability Set and an Availability Zone in Azure?

    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.

  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?

    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.

  4. Which Azure Traffic Manager routing method directs users to the endpoint with the lowest latency?

    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.

  5. What does Recovery Point Objective (RPO) represent in a disaster recovery plan?

    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.

  6. Which Azure regions are considered 'paired regions' and what is their primary benefit?

    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.

  7. You need to protect Azure VMs with a daily backup and retain recovery points for 30 days. Which service should you use?

    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.