Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company has deployed several Azure virtual machines in a virtual network. The security policy requires that administrators must be able to connect to these VMs using Remote Desktop Protocol (RDP) from the Azure portal, but the VMs must not have any public IP addresses assigned. The company wants to minimize management overhead and avoid deploying additional jump-box virtual machines. Which Azure service should they 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 Bastion
Azure Bastion is a fully managed PaaS service that provides secure RDP and SSH access to Azure virtual machines directly from the Azure portal, without exposing the VMs via public IP addresses. It eliminates the need for a separate jump-box VM and reduces management overhead, making it the correct choice for this scenario.
B
Distractor review
Azure Front Door
Azure Front Door is a global content delivery network and application load balancer designed to optimize web traffic and provide web application firewall capabilities. It does not provide RDP or SSH connectivity to individual virtual machines.
C
Distractor review
Azure VPN Gateway
Azure VPN Gateway establishes encrypted connectivity between on-premises networks and Azure virtual networks. While it allows secure private access, administrators would still need a jump-box or a VM with a public IP to initiate RDP from the portal, and the VMs themselves would typically require private IP connectivity, not portal-based RDP without a public IP.
D
Distractor review
Azure ExpressRoute
Azure ExpressRoute provides a dedicated private network connection from on-premises to Azure, bypassing the public internet. However, it does not offer direct RDP/SSH access from the Azure portal; administrators would still need a jump-box or a VM with a public IP, and it adds complexity and cost unrelated to the stated requirements.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Azure Bastion — Azure Bastion provides secure and seamless RDP/SSH connectivity to your virtual machines directly from the Azure portal, over TLS. When you use Azure Bastion, your virtual machines do not need a public IP address, and you avoid the management overhead of maintaining a separate jump-box. Azure Front Door is a global load balancer and web application firewall, not for direct VM access. Azure VPN Gateway connects on-premises networks to Azure via encrypted tunnels, but still requires VMs to have private IP access and often a jump box. Azure ExpressRoute provides a private dedicated connection from on-premises to Azure, but similarly does not eliminate the need for a jump box or public IP for portal-based RDP.
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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