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A company has several Azure virtual machines (VMs) in a VNet that host a legacy application. IT support staff need to perform remote administration using RDP. The security team wants to avoid exposing the VMs to the public internet and also enforce Azure Multi-Factor Authentication (MFA) for all RDP sessions. Which Azure service should they deploy to meet these requirements?

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A company has several Azure virtual machines (VMs) in a VNet that host a legacy application. IT support staff need to perform remote administration using RDP. The security team wants to avoid exposing the VMs to the public internet and also enforce Azure Multi-Factor Authentication (MFA) for all RDP sessions. Which Azure service should they deploy to meet these requirements?

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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

Distractor review

Just-in-Time (JIT) VM Access from Microsoft Defender for Cloud

JIT reduces exposure by opening ports for a limited time, but it still requires a public IP on the VM and does not itself enforce MFA. Additional configuration would be needed for MFA.

B

Best answer

Azure Bastion

Correct. Azure Bastion provides secure RDP/SSH access without public IPs and integrates with Azure AD and Conditional Access to enforce MFA, fulfilling both requirements.

C

Distractor review

Network Security Groups (NSGs) with allow rules for RDP only from a trusted IP

NSGs can restrict source IPs but still require the VM to have a public IP and do not enforce MFA. This does not meet the MFA requirement.

D

Distractor review

Azure Firewall with DNAT rules to forward RDP traffic

Even with Azure Firewall, the VM would still be exposed via the firewall's public IP, and MFA is not natively enforced. Additional components would be needed to add MFA.

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.

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 DevOps team wants Defender for Cloud to identify secrets exposed in GitHub repositories. What should be configured?

Question 2

A public web application should be protected from OWASP-style attacks and network-layer DDoS attacks. Which two Azure services are most relevant?

Question 3

A Sentinel scheduled rule runs every 5 minutes and looks back 1 hour. Analysts see repeated alerts for the same event. Which change best prevents duplicate detections without missing late-arriving logs?

Question 4

A SOC analyst needs a Sentinel query that detects multiple failed sign-ins followed by a successful sign-in for the same user. Which table is the best primary source?

Question 5

A Sentinel watchlist contains high-value administrator accounts. Which KQL pattern best uses it in a detection rule?

Question 6

A SOC wants a Sentinel rule to include account, host, and IP entities so analysts can pivot during investigation. What should be configured in the analytics rule?

FAQ

Questions learners often ask

What does this AZ-500 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 is a fully managed PaaS service that provides secure and seamless RDP/SSH connectivity to VMs directly through the Azure portal over TLS. It does not require the VMs to have public IP addresses. Additionally, Azure Bastion integrates with Azure AD and Conditional Access, allowing you to enforce MFA and other access policies on the Bastion session. Just-in-Time VM Access (JIT) also limits exposure but still requires a public IP on the VM and does not natively enforce MFA for RDP. Network Security Groups and Azure Firewall do not provide the necessary MFA enforcement for RDP sessions.

What should I do if I get this AZ-500 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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