Question 615 of 1,000

Secure networking →hardMultiple ChoiceObjective-mapped

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.

Exhibit

{
  "properties": {
    "format": "JSON",
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Network/virtualNetworks"
      },
      "then": {
        "effect": "deny",
        "details": {
          "field": "Microsoft.Network/virtualNetworks/subnets",
          "exists": true
        }
      }
    }
  }
}

Refer to the exhibit. You are evaluating an Azure Policy definition. What is the effect of this policy when assigned to a subscription?

Question 1hardmultiple choice

Full question →

Exhibit

{
  "properties": {
    "format": "JSON",
    "policyRule": {
      "if": {
        "field": "type",
        "equals": "Microsoft.Network/virtualNetworks"
      },
      "then": {
        "effect": "deny",
        "details": {
          "field": "Microsoft.Network/virtualNetworks/subnets",
          "exists": true
        }
      }
    }
  }
}

A
It audits virtual networks to ensure they have a network security group attached.
Why wrong: The policy does not audit or check for NSGs.
B
It denies the creation of any virtual network because it always has subnets.
A virtual network must have at least one subnet, so this policy would deny all virtual network creation.
C
It denies virtual networks that have any subnet with a service endpoint.
Why wrong: The condition only checks for existence of subnets, not their properties.
D
It denies the creation of virtual networks that do not have subnets.
Why wrong: The policy denies when subnets exist, not when they are missing.

Full breakdown with real-world context →

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

It denies the creation of any virtual network because it always has subnets.

The policy denies any virtual network that has any subnet defined. It checks if the 'subnets' field exists and denies if true. It does not check for specific subnet configurations like NSGs or service endpoints.

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.

✗
It audits virtual networks to ensure they have a network security group attached.
Why it's wrong here
The policy does not audit or check for NSGs.
✓
It denies the creation of any virtual network because it always has subnets.
Why this is correct
A virtual network must have at least one subnet, so this policy would deny all virtual network creation.
Related concept
CIDR notation defines the prefix length.
✗
It denies virtual networks that have any subnet with a service endpoint.
Why it's wrong here
The condition only checks for existence of subnets, not their properties.
✗
It denies the creation of virtual networks that do not have subnets.
Why it's wrong here
The policy denies when subnets exist, not when they are missing.

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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.

What to study next

Got this wrong? Here's your next step.

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.

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FAQ

Questions learners often ask

What does this AZ-500 question test?

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: It denies the creation of any virtual network because it always has subnets. — The policy denies any virtual network that has any subnet defined. It checks if the 'subnets' field exists and denies if true. It does not check for specific subnet configurations like NSGs or service endpoints.

What should I do if I get this AZ-500 question wrong?

What is the key concept behind this question?

CIDR notation defines the prefix length.

About these practice questions

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Last reviewed: Jun 20, 2026

Question Discussion

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This AZ-500 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-500 exam.

AZ-500 Secure networking Practice Question

Exhibit

Exhibit

Why each option matters

Option-by-option breakdown

Common exam trap: usable hosts are not the same as total addresses

How to think about this question

KKey Concepts to Remember

TExam Day Tips

How this comes up in practice

Concepts from this question explained

Got this wrong? Here's your next step.

Related AZ-500 practice-question pages

Secure identity and access practice questions

Secure compute, storage, and databases practice questions

Secure Azure using Microsoft Defender for Cloud and Microsoft Sentinel practice questions

Manage identity and access practice questions

Secure networking practice questions

AZ-500 fundamentals practice questions

AZ-500 scenario practice questions

AZ-500 troubleshooting practice questions

Start a free AZ-500 practice session

Questions learners often ask

What does this AZ-500 question test?

What is the correct answer to this question?

What should I do if I get this AZ-500 question wrong?

What is the key concept behind this question?

Question Discussion