AZ-305 Design infrastructure solutions Practice Question
This AZ-305 practice question tests your understanding of design infrastructure solutions. 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 deploys a containerized microservices application on Azure Kubernetes Service (AKS). They need to expose the application to the internet with TLS termination and provide a single endpoint for multiple services. The solution must also include a Web Application Firewall (WAF). Which Azure service should they use as the ingress controller?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Application Gateway with WAF
Azure Application Gateway with WAF is the correct choice because it is a regional, layer-7 load balancer that can act as an ingress controller for AKS. It provides TLS termination at the gateway and integrates a Web Application Firewall (WAF) to protect against common web exploits. This allows a single public endpoint to route traffic to multiple microservices within the AKS cluster based on URL paths or host headers.
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.
✓
Azure Application Gateway with WAF
Why this is correct
Application Gateway Ingress Controller (AGIC) enables TLS termination, WAF, and single endpoint for AKS services.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Front Door with WAF
Why it's wrong here
Front Door is a global load balancer; it can be used but is more complex and costly for a single-region AKS cluster.
✗
Azure Load Balancer with TLS termination
Why it's wrong here
Load Balancer operates at Layer 4 and does not support TLS termination or WAF.
✗
Azure Traffic Manager with health probes
Why it's wrong here
Traffic Manager is DNS-based and does not terminate TLS or act as an ingress for AKS.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Front Door (global, edge-based) with Application Gateway (regional, cluster-facing), assuming both can serve as an AKS ingress controller, but only Application Gateway integrates natively with AKS via AGIC for internal cluster routing.
Detailed technical explanation
How to think about this question
Azure Application Gateway can be deployed as an AKS ingress controller using the Application Gateway Ingress Controller (AGIC) add-on, which allows the gateway to dynamically configure routing rules based on Kubernetes Ingress resources. The WAF SKU uses the OWASP Core Rule Set (CRS) to filter malicious traffic, and TLS termination offloads SSL/TLS decryption from the backend pods, reducing compute overhead. In a real-world scenario, this setup enables path-based routing (e.g., /api/* to one service, /web/* to another) while enforcing security policies at the edge.
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Design infrastructure solutions — This question tests Design infrastructure solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Application Gateway with WAF — Azure Application Gateway with WAF is the correct choice because it is a regional, layer-7 load balancer that can act as an ingress controller for AKS. It provides TLS termination at the gateway and integrates a Web Application Firewall (WAF) to protect against common web exploits. This allows a single public endpoint to route traffic to multiple microservices within the AKS cluster based on URL paths or host headers.
What should I do if I get this AZ-305 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.
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Question Discussion
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