Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
A company has an Azure virtual network with multiple subnets hosting different tiers of an application. The security team requires inspection of all traffic between subnets for malicious patterns and the ability to allow or deny traffic based on fully qualified domain names (FQDNs). Which Azure networking service should they implement?
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
Distractor review
Azure Network Security Group (NSG)
NSGs provide network layer (layer-3/4) filtering based on IP addresses, ports, and protocols, but cannot inspect application layer content or use FQDNs.
B
Best answer
Azure Firewall
Azure Firewall is a stateful firewall with application (FQDN) and network rules, enabling inspection and filtering of traffic between subnets.
C
Distractor review
Azure Application Gateway
Azure Application Gateway is a layer-7 load balancer for web applications, not for filtering inter-subnet traffic.
D
Distractor review
Azure VPN Gateway
Azure VPN Gateway is used for site-to-site or VNet-to-VNet encrypted connections, not for internal traffic inspection.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related AZ-500 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
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.
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Question 5
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Question 6
A SOC wants a Sentinel rule to include account, host, and IP entities so analysts can pivot during investigation. What should be configured in the analytics rule?
FAQ
Questions learners often ask
What does this AZ-500 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: Azure Firewall — Azure Firewall provides stateful filtering and application layer inspection, allowing rules based on FQDNs. Network Security Groups (NSGs) are limited to source/destination IP, port, and protocol, and cannot inspect based on FQDNs. Azure Application Gateway is a layer-7 load balancer with Web Application Firewall (WAF) for web traffic, but it is not designed for inter-subnet traffic inspection. Azure VPN Gateway is for encrypted connectivity between networks, not for filtering traffic within a virtual network.
What should I do if I get this AZ-500 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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