Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
A company runs a critical application on Azure SQL Database in the West US region. They need a disaster recovery solution with an RPO of 5 seconds and an RTO of 1 hour. They also need to be able to perform patching and maintenance on the primary without downtime. Which configuration should they implement?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Active geo-replication with auto-failover group
Auto-failover groups provide the required RPO and RTO, and allow planned failover for maintenance without data loss.
B
Distractor review
Azure SQL Database backup to geo-redundant storage
Geo-restore from backups has a higher RPO (1 hour) and RTO (12 hours), not meeting requirements.
C
Distractor review
Azure SQL Database with zone-redundant configuration
Zone redundancy protects against datacenter failure within a region, not a regional disaster.
D
Distractor review
Azure SQL Database with failover group using manual failover
Manual failover requires human intervention and may not meet the RTO of 1 hour for automatic failover.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A company is designing hub-and-spoke networking. Spoke VNets must use a central Azure Firewall for outbound internet traffic. Which two configurations are required?
Question 2
A company is designing private access to a PaaS database from workloads in a VNet. The database should not be reachable over its public endpoint. What should be recommended?
Question 3
A data platform must support analytical queries over petabytes of files in a data lake, while preserving hierarchical namespaces and fine-grained ACLs. Which storage service should you design around?
Question 4
A database workload has an RPO of 15 minutes and an RTO of 4 hours. Cost is more important than near-zero data loss. Which design is usually more appropriate than synchronous multi-region replication?
Question 5
A hub-and-spoke Azure network must centralize outbound inspection and still allow spokes to resolve private endpoint DNS names. Which two components are commonly required? (Choose 2.)
Question 6
A multinational company uses Microsoft Entra ID and several Azure subscriptions. Security administrators need to review privileged role assignments every month and require justification for continued access. Which design should be recommended?
FAQ
Questions learners often ask
What does this AZ-305 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Active geo-replication with auto-failover group — Auto-failover groups with active geo-replication provide an RPO of 5 seconds (synchronous replication within the group) and an RTO of about 1 hour. They allow planned failover to the secondary for maintenance, minimizing downtime. Geo-restore from backups has longer RTO, zone redundancy doesn't address cross-region DR, and manual failover requires more intervention.
What should I do if I get this AZ-305 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
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