- A
Basic
DDoS Protection Basic is free and automatically included for all Azure resources. It provides protection against common network-layer attacks, making it the simplest and most cost-effective choice for a single web application.
- B
Standard
Why wrong: DDoS Protection Standard is a paid tier that offers enhanced features like adaptive tuning, detailed metrics, and protection for multiple virtual networks. It is not required for a single App Service instance and would incur unnecessary cost.
- C
Premium
Why wrong: There is no 'Premium' tier for Azure DDoS Protection. The available tiers are Basic and Standard.
- D
No protection is needed because Azure App Service is inherently protected against DDoS attacks.
Why wrong: While Basic protection is automatic, it is not correct to say no protection is needed. Basic is sufficient, but it is a form of protection.
AZ-500 Secure networking Practice Question
This AZ-500 practice question tests your understanding of secure networking. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A company runs a public-facing web application on Azure App Service in the West US region. They want to protect against network-layer (Layer 3/4) DDoS attacks. The application consists of a single App Service instance. Which Azure DDoS Protection tier should they enable to meet this requirement while minimizing cost?
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
Basic
Azure DDoS Protection Basic is automatically enabled at no additional cost for all Azure services, including App Service. It provides always-on traffic monitoring and real-time mitigation of common network-layer (Layer 3/4) attacks, such as SYN floods, UDP floods, and reflection attacks, which meets the requirement to protect the public-facing web application. Since the company wants to minimize cost and only needs Layer 3/4 protection for a single App Service instance, the Basic tier is sufficient.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Basic
Why this is correct
DDoS Protection Basic is free and automatically included for all Azure resources. It provides protection against common network-layer attacks, making it the simplest and most cost-effective choice for a single web application.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Standard
Why it's wrong here
DDoS Protection Standard is a paid tier that offers enhanced features like adaptive tuning, detailed metrics, and protection for multiple virtual networks. It is not required for a single App Service instance and would incur unnecessary cost.
- ✗
Premium
Why it's wrong here
There is no 'Premium' tier for Azure DDoS Protection. The available tiers are Basic and Standard.
- ✗
No protection is needed because Azure App Service is inherently protected against DDoS attacks.
Why it's wrong here
While Basic protection is automatic, it is not correct to say no protection is needed. Basic is sufficient, but it is a form of protection.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume Azure App Service has no built-in DDoS protection and that they must purchase a paid tier, but Azure DDoS Protection Basic is automatically enabled and free, making it the correct choice for cost-effective Layer 3/4 protection.
Detailed technical explanation
How to think about this question
Azure DDoS Protection Basic operates at the Azure platform edge, using global capacity to absorb and scrub traffic before it reaches the App Service. It leverages Azure's distributed denial-of-service (DDoS) detection algorithms that monitor traffic patterns and trigger mitigation when thresholds are exceeded, such as 100,000 packets per second for SYN floods. In a real-world scenario, if the application experiences a sudden spike in legitimate traffic, Basic protection may not differentiate between attack and normal traffic as effectively as Standard, but for a single-instance app with minimal cost concerns, Basic is adequate.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this AZ-500 question test?
Secure networking — This question tests Secure networking — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Basic — Azure DDoS Protection Basic is automatically enabled at no additional cost for all Azure services, including App Service. It provides always-on traffic monitoring and real-time mitigation of common network-layer (Layer 3/4) attacks, such as SYN floods, UDP floods, and reflection attacks, which meets the requirement to protect the public-facing web application. Since the company wants to minimize cost and only needs Layer 3/4 protection for a single App Service instance, the Basic tier is sufficient.
What should I do if I get this AZ-500 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
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.
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