- A
Azure VPN Gateway
Why wrong: Azure VPN Gateway sends encrypted traffic over the public internet. It does not provide a dedicated private connection and typically offers lower bandwidth and higher latency compared to ExpressRoute. It also does not offer the same SLA for availability.
- B
Azure ExpressRoute
Azure ExpressRoute creates a private, dedicated connection between on-premises infrastructure and Azure, bypassing the public internet. It provides higher bandwidth, lower latency, and an availability SLA, meeting all the requirements described in the scenario.
- C
Azure Virtual WAN
Why wrong: Azure Virtual WAN is a networking service that brings together various connectivity options like VPN and ExpressRoute into a unified hub. However, it is not the dedicated private connection itself; the underlying private connectivity would still be provided by ExpressRoute.
- D
Azure Application Gateway
Why wrong: Azure Application Gateway is a layer 7 load balancer that distributes HTTP/HTTPS traffic to web applications. It does not provide private connectivity between on-premises networks and Azure.
Quick Answer
The answer is Azure ExpressRoute, the correct choice because it establishes a dedicated private connection between on-premises networks and Azure that completely bypasses the public internet, offering higher bandwidth, lower latency, and more reliable connectivity than a site-to-site VPN, backed by a financially guaranteed SLA for availability. On the AZ-900 exam, this question tests your understanding of connectivity services, specifically how ExpressRoute differs from VPN Gateway—a common trap is confusing site-to-site VPN, which still traverses the internet, with ExpressRoute’s truly private path. Remember that ExpressRoute is for when you need a private, high-bandwidth, SLA-backed link for critical workloads, while VPN is for encrypted but internet-dependent connections. A simple memory tip: think “ExpressRoute = Express Lane” that bypasses public traffic, ensuring speed and privacy.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. 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 critical application on-premises and plans to extend its data center to Azure. The company needs a dedicated, private network connection between the on-premises network and Azure that bypasses the public internet. The connection must provide higher bandwidth and more reliable, lower-latency connectivity than a site-to-site VPN. The company also requires a Service Level Agreement (SLA) for the connection's availability. Which Azure service should the company use?
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
Azure ExpressRoute
Azure ExpressRoute is the correct choice because it provides a dedicated, private network connection from on-premises to Azure that bypasses the public internet entirely. It offers higher bandwidth, lower latency, and more reliable connectivity than a site-to-site VPN, and it includes a financially backed SLA for availability (typically 99.95% or higher). This makes it ideal for critical applications requiring consistent, private, and high-performance connectivity.
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 VPN Gateway
- ✓
Azure ExpressRoute
Why this is correct
Azure ExpressRoute creates a private, dedicated connection between on-premises infrastructure and Azure, bypassing the public internet. It provides higher bandwidth, lower latency, and an availability SLA, meeting all the requirements described in the scenario.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Virtual WAN
Why it's wrong here
Azure Virtual WAN is a networking service that brings together various connectivity options like VPN and ExpressRoute into a unified hub. However, it is not the dedicated private connection itself; the underlying private connectivity would still be provided by ExpressRoute.
- ✗
Azure Application Gateway
Why it's wrong here
Azure Application Gateway is a layer 7 load balancer that distributes HTTP/HTTPS traffic to web applications. It does not provide private connectivity between on-premises networks and Azure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Virtual WAN as a direct replacement for ExpressRoute, but Virtual WAN is a hub-and-spoke architecture that can include ExpressRoute circuits, not a private connection service itself.
Detailed technical explanation
How to think about this question
ExpressRoute uses a Layer 3 BGP peering over a dedicated fiber or MPLS connection from a service provider, ensuring traffic never traverses the public internet. It supports both private peering (for Azure virtual networks) and Microsoft peering (for Azure PaaS services), and offers bandwidth options from 50 Mbps to 100 Gbps. The SLA for ExpressRoute is typically 99.95% availability for a single connection, and higher if redundant circuits are configured, which is critical for mission-critical workloads.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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.
- →
Describe Azure architecture and services — study guide chapter
Learn the concepts, then practise the questions
- →
Describe Azure architecture and services practice questions
Targeted practice on this topic area only
- →
All AZ-900 questions
1,031 questions across all exam domains
- →
Microsoft Azure Fundamentals AZ-900 study guide
Full concept coverage aligned to exam objectives
- →
AZ-900 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related AZ-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Describe cloud concepts practice questions
Practise AZ-900 questions linked to Describe cloud concepts.
Describe Azure architecture and services practice questions
Practise AZ-900 questions linked to Describe Azure architecture and services.
Describe Azure management and governance practice questions
Practise AZ-900 questions linked to Describe Azure management and governance.
AZ-900 Azure services practice questions
Practise AZ-900 questions linked to AZ-900 Azure services.
AZ-900 pricing and support practice questions
Practise AZ-900 questions linked to AZ-900 pricing and support.
AZ-900 security and compliance practice questions
Practise AZ-900 questions linked to AZ-900 security and compliance.
AZ-900 governance practice questions
Practise AZ-900 questions linked to AZ-900 governance.
Practice this exam
Start a free AZ-900 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this AZ-900 question test?
Describe Azure architecture and services — This question tests Describe Azure architecture and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure ExpressRoute — Azure ExpressRoute is the correct choice because it provides a dedicated, private network connection from on-premises to Azure that bypasses the public internet entirely. It offers higher bandwidth, lower latency, and more reliable connectivity than a site-to-site VPN, and it includes a financially backed SLA for availability (typically 99.95% or higher). This makes it ideal for critical applications requiring consistent, private, and high-performance connectivity.
What should I do if I get this AZ-900 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
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on AZ-900
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company runs a critical ERP system on-premises and plans to extend the application to Azure IaaS VMs for burst capacity. The network team requires a dedicated, private connection between the on-premises data center and Azure that does not traverse the public internet. The connection must offer consistent latency, high bandwidth options up to 10 Gbps, and a financially backed SLA for availability. Which Azure service should the team provision to meet these requirements?
medium- ✓ A.Azure ExpressRoute
- B.Azure VPN Gateway (site-to-site)
- C.Azure Front Door
- D.Azure Bastion
Why A: Azure ExpressRoute provides a dedicated, private connection from on-premises to Azure that bypasses the public internet, ensuring consistent latency and high bandwidth up to 10 Gbps. It also offers a financially backed SLA for availability, making it the ideal choice for extending a critical ERP system for burst capacity with predictable performance.
Last reviewed: Jun 11, 2026
This AZ-900 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-900 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.