AZ-305 Design infrastructure solutions Practice Question
A company is designing a network architecture for a three-tier application hosted on Azure VMs. The web tier must be accessible from the internet, while the application and database tiers must not have direct internet access. They also need to encrypt traffic between tiers. Which TWO solutions should they implement?
⚠ Common exam trap
Candidates often assume Azure Application Gateway or Front Door can handle inter-tier encryption, but these services are designed for inbound internet traffic and do not natively encrypt traffic between internal tiers without additional configuration or third-party tools.
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
✓
Deploy a network virtual appliance (NVA) as a reverse proxy for the web tier
Deploying a network virtual appliance (NVA) as a reverse proxy for the web tier allows the web tier to be exposed to the internet while the application and database tiers remain isolated without direct internet access. The NVA can terminate inbound traffic and forward it to the web tier, and it can also enforce encryption (e.g., TLS) between tiers by acting as a secure gateway, meeting the requirement to encrypt traffic between tiers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Azure Application Gateway with WAF
Why it's wrong here
Application Gateway is for L7, not for encrypting VM-to-VM traffic.
- ✓
Deploy a network virtual appliance (NVA) as a reverse proxy for the web tier
Why this is correct
NVA can restrict access and encrypt traffic.
- ✓
Use Azure Private Link for the database tier
Why this is correct
Private Link provides private connectivity and encryption.
- ✗
Use Azure Front Door
Why it's wrong here
Azure Front Door is for global web delivery.
- ✗
Use VNet peering to connect the tiers
Why it's wrong here
VNet peering does not provide encryption.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-305 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-305 exam.