Azure Private Link is the correct choice because it provides private connectivity from a virtual network to Azure PaaS services without traffic ever traversing the public internet. It works by creating a private endpoint within your VNet, which assigns a private IP address to the PaaS service, effectively bringing the service into your network. All data flows securely over the Microsoft Azure backbone network, eliminating exposure to the internet. On the AZ-900 exam, this concept tests your understanding of how to securely connect to services like Azure SQL Database or Storage while maintaining network isolation. A common trap is confusing Azure Private Link with Service Endpoints—remember that Private Link uses private IPs and is more granular, while Service Endpoints still route traffic over the Microsoft backbone but use public endpoints. For a memory tip, think “Private Link = Private IP, Private path” to recall that it keeps traffic completely off the internet.
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.
Which Azure networking service provides private connectivity from a virtual network to Azure PaaS services without traffic going over the internet?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Private Link
Azure Private Link (option B) is correct because it exposes Azure PaaS services via private IP addresses within a virtual network, using private endpoints that map the service to a network interface in the VNet. This ensures all traffic to the PaaS service traverses the Microsoft Azure backbone network, never the public internet, providing true private 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 Service Endpoints
Why it's wrong here
Service Endpoints extend VNet identity to Azure services but traffic still uses Microsoft backbone, not a private endpoint IP in the VNet.
✓
Azure Private Link
Why this is correct
Private Link provides private endpoints (private IPs within the VNet) for PaaS services, ensuring traffic stays on Microsoft's network.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure VNet Peering
Why it's wrong here
VNet Peering connects two VNets; Private Link provides private access to PaaS services from a VNet.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Service Endpoints with Private Link, assuming both provide the same level of privacy, but Service Endpoints still use the service's public endpoint and do not offer the same isolation as Private Link's private IP mapping.
Detailed technical explanation
How to think about this question
Under the hood, Azure Private Link uses a private endpoint—a network interface with a private IP from your VNet—that maps to a specific Azure resource (e.g., a storage account or SQL Database) via Azure's control plane. Traffic flows entirely within the Microsoft network, bypassing the public internet, and can be further secured with network security groups (NSGs) and route tables. A real-world scenario is a financial application that must avoid internet exposure for compliance; Private Link ensures all data transfer to Azure SQL Database stays on the backbone, meeting regulatory requirements.
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-900 question in full detail.
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 Private Link — Azure Private Link (option B) is correct because it exposes Azure PaaS services via private IP addresses within a virtual network, using private endpoints that map the service to a network interface in the VNet. This ensures all traffic to the PaaS service traverses the Microsoft Azure backbone network, never the public internet, providing true private 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
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Variation 1. Which Azure service enables the creation of private endpoints so that Azure PaaS services like Storage and SQL Database are accessible only through a private IP within a VNet?
medium
A.VNet Service Endpoints
✓ B.Azure Private Link with Private Endpoints
C.Azure Firewall
D.Network Security Groups
Why B: Azure Private Link with Private Endpoints is the correct service because it enables you to access Azure PaaS services (e.g., Storage, SQL Database) over a private IP address within your Virtual Network (VNet). This ensures traffic never traverses the public internet, as the private endpoint uses a network interface with a private IP from your VNet, mapping the PaaS service to your VNet.
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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
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