AZ-305 Design infrastructure solutions Practice Question
This AZ-305 practice question tests your understanding of design infrastructure solutions. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You are designing a storage strategy for a data analytics solution that processes large volumes of streaming data. The data must be stored in a cost-effective manner with low latency for hot data and infrequent access for cold data after 30 days. The solution must support both batch and interactive queries. Which combination of Azure storage services should you recommend?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Data Lake Storage Gen2 with lifecycle management
Option B is correct because Azure Data Lake Storage Gen2 provides scalable storage for analytics with hierarchical namespace, and lifecycle management policies can move data to cool or archive tiers. Option A is wrong because Blob Storage with hot/cool tiers works but Data Lake Gen2 is optimized for analytics. Option C is wrong because Azure SQL Database is relational and expensive for large-scale analytics. Option D is wrong because Cosmos DB is for NoSQL workloads.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Azure Data Lake Storage Gen2 with lifecycle management
Why this is correct
ADLS Gen2 is optimized for analytics and lifecycle management can move cold data to cheaper storage.
Related concept
Static NAT maps one inside address to one outside address.
✗
Azure SQL Database with geo-replication
Why it's wrong here
SQL Database is relational and not designed for high-volume streaming data storage.
✗
Azure Blob Storage with hot and cool access tiers
Why it's wrong here
Blob Storage can work but lacks hierarchical namespace for analytics.
✗
Azure Cosmos DB with multiple consistency levels
Why it's wrong here
Cosmos DB is a NoSQL database, suitable for transactional workloads, not analytics.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
Design infrastructure solutions — This question tests Design infrastructure solutions — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Azure Data Lake Storage Gen2 with lifecycle management — Option B is correct because Azure Data Lake Storage Gen2 provides scalable storage for analytics with hierarchical namespace, and lifecycle management policies can move data to cool or archive tiers. Option A is wrong because Blob Storage with hot/cool tiers works but Data Lake Gen2 is optimized for analytics. Option C is wrong because Azure SQL Database is relational and expensive for large-scale analytics. Option D is wrong because Cosmos DB is for NoSQL workloads.
What should I do if I get this AZ-305 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This AZ-305 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-305 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.