Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company needs to deploy a consistent set of Azure resources (a virtual network, two subnets, and a network security group) into multiple environments: dev, test, and prod. The IT operations team wants to define these resources in a declarative file that can be deployed repeatedly and reliably to different resource groups. The team also wants to version control the file and have the ability to update all environments by redeploying the same file. Which Azure feature should the team use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Azure Resource Manager (ARM) templates
Correct. ARM templates are JSON files that declaratively define Azure resources. They can be deployed repeatedly to different resource groups, support version control, and allow updating environments by redeploying the same file.
B
Distractor review
Azure Policy
Incorrect. Azure Policy is a governance tool used to enforce rules and ensure compliance of existing and new resources, but it does not create or deploy resources.
C
Distractor review
Azure Management Groups
Incorrect. Management Groups provide a hierarchical structure to organize Azure subscriptions for governance (e.g., policy and cost management), but they do not deploy resources.
D
Distractor review
Azure Advisor
Incorrect. Azure Advisor offers personalized best-practice recommendations for cost, security, reliability, and performance, but it cannot be used to define or deploy infrastructure.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Related practice questions
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer is building a serverless application that requires integration with an on-premises SQL Server database for real-time data processing. The on-premises network is connected to Azure via a site-to-site VPN. Which Azure service would allow the function to securely access the on-premises database without exposing it to the public internet?
Question 2
A solutions architect is designing a storage solution for a large media company. The company needs to store video files that are accessed infrequently but must be retained for several years for compliance. Which two Azure storage options meet these requirements? (Select two.)
Question 3
A company deploys a multi-tier application using Azure virtual machines. The web tier VMs must be evenly distributed across two distinct data centers within an Azure region to avoid a single point of failure from an infrastructure outage. Which Azure construct should they use to meet this requirement?
Question 4
A company wants to enforce a set of security policies across all their Azure subscriptions. They have created several individual policy definitions. Which Azure construct should they use to group these policies together and assign them as a single package?
Question 5
A company deploys a line-of-business application on an Azure virtual machine. The IT team wants to ensure the application remains secure. According to the shared responsibility model, which of the following security tasks is the sole responsibility of the customer (the company)?
Question 6
A company develops a web API that runs on Azure App Service. The development team wants to deploy a new version of the API to a staging environment, run integration tests against it, and then gradually shift production traffic to the new version. If any issues are detected, they want to immediately roll back to the previous version without redeploying. Which Azure App Service feature should the team use to meet these requirements?
FAQ
Questions learners often ask
What does this AZ-900 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: Azure Resource Manager (ARM) templates — This scenario requires infrastructure as code (IaC) for repeatable and consistent deployments. Azure Resource Manager (ARM) templates allow you to define the exact resources needed in a declarative JSON file that can be deployed to multiple resource groups. ARM templates are idempotent, meaning redeploying the same template consistently produces the same state, and they can easily be version-controlled using tools like Git. Azure Policy, Management Groups, and Azure Advisor serve different governance or advisory purposes and are not designed for deploying resources.
What should I do if I get this AZ-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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