AZ-301 Business Continuity & Disaster Recovery 3

Question 1

An architect is evaluating SLA commitments for a multi-region Azure deployment.
If each region has a 99.9% availability SLA, what is the composite availability when using active-active across two regions with automatic failover?

Accepted Answer

99.99% — multiplicative improvement through redundancy

Answer

99.9% — same as a single region

Answer

99.0% — lower due to failover overhead

Answer

100% — guaranteed by Microsoft for multi-region

Question 2

Which Azure Storage redundancy option replicates data synchronously across three availability zones within the same region?

Accepted Answer

Zone Redundant Storage (ZRS)

Answer

Locally Redundant Storage (LRS)

Answer

Geo-Redundant Storage (GRS)

Answer

Geo-Zone Redundant Storage (GZRS)

Question 3

A company needs their Azure-hosted application to withstand the failure of an entire Azure region. Which redundancy strategy should the architect recommend?

Accepted Answer

Deploy across paired Azure regions with geo-replication

Answer

Deploy across multiple availability zones in the same region

Answer

Use LRS storage with managed disk snapshots

Answer

Enable zone redundancy on Azure App Service Plan

Question 4

Which Azure service provides a managed solution for backing up Azure file shares with configurable snapshot schedules and retention policies?

Accepted Answer

Azure Backup for Azure Files

Answer

Azure Blob Storage versioning

Answer

Azure File Sync cloud tiering

Answer

Azure Data Factory copy activity

Question 5

An architect needs to protect Azure virtual machines against accidental deletion and ransomware by ensuring backups cannot be deleted for a defined retention period. Which Azure Backup feature provides this?

Accepted Answer

Azure Backup immutable vault

Answer

Soft delete for Azure Backup

Answer

Resource lock on the Recovery Services vault

Answer

Azure Policy deny effect on backup deletion

Question 6

During a DR drill, a team performs a failover from the primary Azure region to the secondary. After validating recovery, they want to reverse replication and fail back. In Azure Site Recovery terminology, what is this process called?

Accepted Answer

Reprotect and failback

Answer

Planned failover in reverse

Answer

Cold restore

Answer

Region swap

Question 7

A global retail company needs a BCDR strategy for their Azure SQL Database that minimizes data loss and allows read scale during normal operations. Which solution best meets both requirements?

Accepted Answer

Azure SQL Database active geo-replication with readable secondary replicas

Answer

Azure SQL Database with geo-restore from GRS backups

Answer

Azure SQL Managed Instance with automatic failover groups

Answer

Azure SQL Database with long-term retention and cross-region copy