Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company deploys a web application on Azure VMs. The application stores session state and frequently accessed product data. They need a low-latency, in-memory cache to reduce database load and improve response times. The cache must be managed and support data persistence with replication across availability zones within the region. Which Azure service and tier should they 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
Best answer
Azure Cache for Redis (Premium tier)
The Premium tier of Azure Cache for Redis provides features like data persistence (RDB/AOF), clustering, and zone redundancy with replication across availability zones for high availability. It is fully managed.
B
Distractor review
Azure Cache for Redis (Basic tier)
The Basic tier is a single-node cache with no SLA, no data persistence, and no replication. It is not suitable for production scenarios requiring high availability and persistence.
C
Distractor review
Azure Cache for Redis (Standard tier)
The Standard tier offers replication (two nodes) and a 99.9% SLA, but it does not support data persistence or zone redundancy. It is suitable for high availability but not for persistence across zones.
D
Distractor review
Azure Cache for Redis (Enterprise tier)
The Enterprise tier supports data persistence and zone redundancy, but it is based on Redis Enterprise, which is more expensive. While it meets requirements, the Premium tier is the appropriate and more common choice for in-region zone redundancy and persistence.
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: Azure Cache for Redis (Premium tier) — Azure Cache for Redis offers in-memory caching with support for persistence and replication. The Premium tier is required for data persistence (RDB or AOF) and zone redundancy. The Basic tier has no SLA and no replication. Standard tier offers replication but no persistence and no zone redundancy. Enterprise tier is for Enterprise Redis, which also supports persistence and zone redundancy, but it is more expensive. The question asks for 'managed and support data persistence with replication across availability zones'. Both Premium and Enterprise tiers support zone redundancy, but Premium is the most common choice and is cost-effective. Enterprise supports Active Geo-Replication but that's cross-region. Within region, Premium works. So the answer is Azure Cache for Redis (Premium tier).
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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