Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a stateless web application on Azure VMs. They need to ensure the application remains available in the event of an entire Azure datacenter failure. They want to achieve a 99.99% SLA. Which deployment option should they recommend?
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
Distractor review
A
An availability set spreads VMs across fault domains within a single datacenter. It protects against rack failures but not an entire datacenter failure.
B
Best answer
B
Deploying VMs across at least two availability zones in the same region protects against an entire datacenter failure and meets the 99.99% SLA.
C
Distractor review
C
Placing VMs in a single zone does not protect against a datacenter failure, and Azure Backup only provides data recovery, not high availability.
D
Distractor review
D
Deploying across paired regions with Traffic Manager provides disaster recovery, not high availability within the region. It may not meet the 99.99% SLA due to failover time.
Common exam trap
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Technical deep dive
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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.
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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?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: B — Availability zones are physically separate datacenters within an Azure region. Deploying VMs across multiple zones protects against a single datacenter failure. The Azure SLA for VMs deployed across availability zones is 99.99%. An availability set protects against rack failures within a single datacenter but not a datacenter failure. Azure Backup is for data protection, not high availability. Cross-region deployment provides disaster recovery but is more complex and typically has a lower SLA for regional failover.
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.
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