Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
An application writes transaction logs to a storage account in a region that supports availability zones. The business wants the account to stay available if one datacenter or zone fails, but it does not need a secondary region replica. Which redundancy option should you choose?
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
LRS, because it keeps three copies within a single datacenter and is enough for any zone failure.
LRS protects against local disk or server failures inside one datacenter, but it does not provide zone-level resilience.
B
Best answer
ZRS, because it replicates synchronously across zones in the same region and survives a zone outage.
ZRS keeps data synchronously replicated across multiple availability zones within one region. That design helps the storage account remain available when a zone or datacenter becomes unavailable, which matches the requirement. It avoids the added complexity and cost of geo-replication because a secondary region is not required.
C
Distractor review
GRS, because it adds a geographically replicated secondary region for disaster recovery.
GRS provides cross-region replication, but the scenario does not require a secondary region replica. It also does not specifically target zone-level protection as the primary requirement.
D
Distractor review
RA-GRS, because read access to the secondary region is the best protection against a zone failure.
RA-GRS adds read access to the secondary region, but that capability is for geo-replication scenarios. It does not directly address the stated need for resiliency within the same region across zones.
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 route table contains these entries: 10.0.0.0/8 with next hop Virtual appliance, and 10.1.1.0/24 with next hop Virtual network gateway. Which next hop will Azure use for traffic to 10.1.1.5?
Question 2
You are deploying a stateless web application on Azure virtual machines. The solution must automatically add and remove instances based on CPU demand and allow all instances to be managed as one logical group. Which Azure compute feature should you deploy?
Question 3
You are deploying a Windows Server VM for an internal app. The VM must support Secure Boot and vTPM later, its OS disk must survive host moves, and the team wants the lowest-cost managed disk tier that still behaves like a normal writable OS disk. Which two choices should you make? Select two.
Question 4
You need to deploy several identical virtual machines and ensure that the failure of a single Azure host does not affect all of them. Which feature should you use?
Question 5
You need to connect VNet-Hub and VNet-Spoke so that resources in both virtual networks can communicate privately over the Microsoft backbone. Both virtual networks are in the same region. What should you configure?
Question 6
You need to create a storage account that provides the lowest-cost redundant storage for non-critical data and only needs protection against local disk or server failure within a single datacenter. Which redundancy option should you choose?
FAQ
Questions learners often ask
What does this AZ-104 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: ZRS, because it replicates synchronously across zones in the same region and survives a zone outage. — ZRS is the best choice when you need resilience against a datacenter or zone failure within the same Azure region. It replicates data synchronously across three zones, so a single-zone outage should not interrupt access to the storage account. Because the requirement does not include disaster recovery to another region or read access to a secondary replica, ZRS provides the right balance of protection and cost. Why others are wrong: LRS only protects against failures inside one datacenter and does not survive a zone outage. GRS and RA-GRS are designed for cross-region replication, which is more than the requirement calls for and does not specifically address zone resilience as the primary need. RA-GRS also adds secondary read access, but that is not the core business requirement here.
What should I do if I get this AZ-104 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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