Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company deploys a web application on Azure VMs behind an Azure Load Balancer (Standard SKU). They want to protect the application from common web attacks like SQL injection and cross-site scripting. Which Azure service should they enable?
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
Azure Application Gateway with Web Application Firewall (WAF) policy.
WAF is designed to inspect HTTP traffic and block common web attacks. Application Gateway provides Layer 7 load balancing with WAF capabilities.
B
Distractor review
Azure Firewall.
Azure Firewall provides network and application-level filtering based on FQDNs, but it does not have a WAF for inspecting web traffic payloads.
C
Distractor review
Network Security Groups on the VM subnet.
NSGs provide stateful filtering of network traffic based on IP, port, and protocol, but they cannot inspect application layer payloads like HTTP requests.
D
Distractor review
Azure DDoS Protection.
Azure DDoS Protection mitigates large-scale volumetric attacks, not application-layer attacks like SQL injection.
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 2
A public web application should be protected from OWASP-style attacks and network-layer DDoS attacks. Which two Azure services are most relevant?
Question 3
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Question 4
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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 Application Gateway with Web Application Firewall (WAF) policy. — Azure Application Gateway with Web Application Firewall (WAF) provides Layer 7 protection specifically against web application attacks such as SQL injection and cross-site scripting. Azure Firewall and NSGs operate at Layer 3/4 and cannot inspect HTTP payloads. Azure DDoS Protection protects against volumetric attacks, not application-layer attacks.
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.
Discussion
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