The correct answer is to set the subnet's privateEndpointNetworkPolicies property to 'Disabled'. This configuration is essential because Azure Private Endpoints require explicit permission to bypass the default network policies enforced at the subnet level; by disabling this property, you allow the private endpoint to handle traffic flow directly, ensuring that only your VNet can access the Azure SQL Database via Private Link. On the AZ-500 exam, this concept tests your understanding of how network policies interact with Private Link components, often appearing as a trick where candidates mistakenly apply an NSG to the private endpoint itself or confuse service endpoints with private endpoints. A common trap is thinking that an application security group or subnet NSG can filter private endpoint traffic, but in reality, the private endpoint’s network policy must be disabled on the subnet to permit the traffic. Remember the mnemonic: “Disable the policy to enable the privacy.”
AZ-500 Secure networking Practice Question
This AZ-500 practice question tests your understanding of secure networking. 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.
Your organization uses Azure Private Link to access Azure SQL Database privately from a VNet. You need to ensure that only your VNet can access the private endpoint. What 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
✓
Set the subnet's privateEndpointNetworkPolicies property to 'Disabled'
Option D is correct because the private endpoint's network policy, 'privateEndpointNetworkPolicies', must be set to 'Disabled' on the subnet to allow private endpoint traffic. Option A is wrong because application security groups are for VMs, not private endpoints. Option B is wrong because service endpoints are different. Option C is wrong because the private endpoint itself does not have an NSG; the subnet NSG affects traffic.
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.
✓
Set the subnet's privateEndpointNetworkPolicies property to 'Disabled'
Why this is correct
This allows the private endpoint to work correctly.
Associate a network security group to the private endpoint
Why it's wrong here
Private endpoints do not have NSGs; the subnet NSG applies.
✗
Enable service endpoints on the subnet
Why it's wrong here
Service endpoints are not required for Private Link.
✗
Configure an application security group on the private endpoint
Why it's wrong here
ASGs are for VMs, not private endpoints.
Common exam traps
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 networking — This question tests Secure networking — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Set the subnet's privateEndpointNetworkPolicies property to 'Disabled' — Option D is correct because the private endpoint's network policy, 'privateEndpointNetworkPolicies', must be set to 'Disabled' on the subnet to allow private endpoint traffic. Option A is wrong because application security groups are for VMs, not private endpoints. Option B is wrong because service endpoints are different. Option C is wrong because the private endpoint itself does not have an NSG; the subnet NSG affects traffic.
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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