Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company needs a data storage solution for a global application that frequently accesses recent data and less frequently older data. Data is unstructured blobs. They want to automatically move blobs to cool storage after 30 days and to archive storage after 90 days. Additionally, blobs must be retained for 7 years and cannot be deleted or modified during that period. Which Azure Blob Storage features should they combine?
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
Use blob lifecycle management policies and legal hold (immutable blobs).
Legal hold prevents deletion but does not enforce a specific retention period and is not designed for automated tiering. Time-based retention is more appropriate for a 7-year fixed period.
B
Best answer
Use blob lifecycle management policies and time-based retention policies.
Lifecycle management automates tier transitions. Time-based retention allows you to set a policy that prevents deletion or modification for a specified period (e.g., 7 years).
C
Distractor review
Use Azure Storage Analytics and immutability policies.
Storage Analytics provides logs and metrics, not automated tiering or retention. Immutability policies (whether legal hold or time-based) are separate, but this combination does not include lifecycle management.
D
Distractor review
Use Azure File Sync and lifecycle management.
Azure File Sync is for syncing file shares, not for blob storage. It does not support blob tiering or immutability features.
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: Use blob lifecycle management policies and time-based retention policies. — Blob lifecycle management policies can automatically move blobs between access tiers based on age (e.g., to cool after 30 days, to archive after 90 days). Time-based retention policies (immutability) allow you to specify a time period during which blobs cannot be deleted or overwritten. Combining these two features meets both requirements. Option B correctly identifies this combination. Option A suggests immutable blobs (legal hold) which is less flexible than time-based retention. Option C uses Storage Analytics which is for metrics/logs, not data management. Option D uses Azure File Sync which is for file shares, not blobs.
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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