AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 need to restrict access to an Azure Storage account so that only traffic from a specific virtual network (VNet) subnet is allowed. Which Azure Storage firewall setting should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Add a virtual network rule that references the VNet and subnet.
Option B is correct because Storage firewall rules can restrict access to specific VNets and subnets by adding a 'Virtual Network' rule. Option A is wrong because IP rules allow specific public IPs, not VNets. Option C is wrong because Private Endpoint is a separate feature that uses private IPs but requires Private Link. Option D is wrong because service endpoints are a prerequisite but the rule type is 'Virtual Network'.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Create a private endpoint for the storage account.
Why it's wrong here
Private endpoint is for private connectivity, not firewall rules.
✗
Enable service endpoints on the subnet and add an IP rule.
Why it's wrong here
Service endpoints are needed but the rule is a virtual network rule, not IP rule.
✗
Add a firewall rule with the subnet's public IP address range.
Why it's wrong here
Subnets use private IPs; public IP rules won't work.
✓
Add a virtual network rule that references the VNet and subnet.
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related AZ-500 subnetting questions on CIDR, address ranges, and subnet selection.
Secure compute, storage, and databases — This question tests Secure compute, storage, and databases — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Add a virtual network rule that references the VNet and subnet. — Option B is correct because Storage firewall rules can restrict access to specific VNets and subnets by adding a 'Virtual Network' rule. Option A is wrong because IP rules allow specific public IPs, not VNets. Option C is wrong because Private Endpoint is a separate feature that uses private IPs but requires Private Link. Option D is wrong because service endpoints are a prerequisite but the rule type is 'Virtual Network'.
What should I do if I get this AZ-500 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related AZ-500 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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