Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a legacy application on Azure Virtual Machines. The application uses a SQL Server database that requires 50,000 IOPS consistently. It also uses a shared file system for storing documents. They plan to migrate from on-premises where they used a SAN for block storage and NAS for file shares. Which combination of Azure storage should they use to meet performance requirements?
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
Premium SSD v2 disks for the database and Azure Files premium tier for the file share.
Premium SSD v2 can achieve 50,000 IOPS with a 320 GiB disk (which gives 4,000 IOPS per GiB, 320*4000=1,280,000? No, let's check: Premium SSD v2 IOPS scales linearly to 80,000 at 1 TiB, but smaller disks can still achieve high IOPS. It is designed for high-performance databases. Azure Files Premium offers low latency and high throughput for file sharing, suitable for a shared file system.
B
Distractor review
Premium SSD (non-v2) for the database and Azure NetApp Files for the file share.
Premium SSD (v1) has a maximum of 20,000 IOPS per disk (depending on size), which may not consistently achieve 50,000 IOPS unless using disk striping or larger disks. Azure NetApp Files can support high throughput but is more expensive than Azure Files Premium for simple file shares.
C
Distractor review
Ultra Disk for the database and Azure Files standard tier for the file share.
Ultra Disk can deliver over 100,000 IOPS, but it is significantly more expensive than Premium SSD v2. The standard tier of Azure Files does not meet low-latency requirements due to higher latency and lower throughput.
D
Distractor review
Standard SSD for the database and Azure Blob Storage for the file share.
Standard SSD provides at most 6,000 IOPS (for largest disks), far below 50,000. Azure Blob Storage is not suitable as a shared file system requiring SMB or NFS protocols without additional configuration (like Azure Files).
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: Premium SSD v2 disks for the database and Azure Files premium tier for the file share. — For the SQL Server database, Premium SSD v2 disks can deliver up to 80,000 IOPS per disk (with appropriate size) and offer consistent low latency. For the file share, Azure Files in the premium tier provides high performance and SMB protocol support for shared access, with low latency. Alternatively, Azure NetApp Files also provides high-performance file shares, but it is more expensive and complex. The combination of Premium SSD v2 and premium Azure Files is a straightforward, managed solution.
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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