The correct answer is Just-in-time (JIT) VM access in Microsoft Defender for Cloud. This feature allows administrators to temporarily open RDP (port 3389) to a virtual machine only when needed and for a limited time, automatically locking down inbound traffic through Azure Network Security Groups or Azure Firewall when the session ends, which minimizes management overhead by eliminating manual NSG rule changes. On the AZ-500 exam, this scenario tests your understanding of how JIT reduces the attack surface against brute-force attacks while maintaining operational efficiency; a common trap is confusing JIT with Azure Bastion, but remember that Bastion provides persistent, always-on RDP/SSH access through a secure gateway, whereas JIT is a time-bound, on-demand opening of the port itself. A useful memory tip: JIT is like a timed safe-deposit box for your VM’s RDP port—it only opens when you have the key and automatically locks after the timer expires.
AZ-500 Manage identity and access Practice Question
This AZ-500 practice question tests your understanding of manage identity and access. 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.
An organization uses Microsoft Defender for Cloud. They want to allow specific administrators to temporarily open RDP (port 3389) to a virtual machine only when needed, and for a limited time, while minimizing management overhead. Which Defender for Cloud feature should they use?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Just-in-time (JIT) VM access
Just-in-time (JIT) VM access in Microsoft Defender for Cloud allows administrators to temporarily open RDP (port 3389) to a virtual machine for a limited time, reducing exposure to brute-force attacks. It integrates with Azure Network Security Groups (NSGs) and Azure Firewall to automatically lock down inbound traffic when not in use, minimizing management overhead by eliminating the need for manual NSG rule changes.
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 Bastion
Why it's wrong here
Bastion provides secure RDP/SSH connectivity but does not allow time-limited, on-demand access control.
✓
Just-in-time (JIT) VM access
Why this is correct
JIT VM access allows you to request time-limited access to VMs via NSG rules, meeting the requirement.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure AD Privileged Identity Management (PIM)
Why it's wrong here
PIM manages privileged roles in Azure AD, not access to virtual machines.
✗
Network Security Groups (NSGs)
Why it's wrong here
While NSGs control traffic, they alone cannot provide time-limited, on-demand access without additional automation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Bastion (persistent secure access) with JIT (time-limited port opening), or mistakenly think PIM controls network access rather than role activation.
Detailed technical explanation
How to think about this question
JIT VM access works by creating an allow rule in the NSG for the requested port (e.g., 3389) only during the approved time window, and automatically removing it after expiration. It leverages Azure Policy to enforce JIT as a default for all VMs, and integrates with Azure Activity Logs for auditing. In a real-world scenario, a security team can set a maximum access duration (e.g., 3 hours) and require approval from a second administrator via Azure AD PIM for elevated JIT requests.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Manage identity and access — This question tests Manage identity and access — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Just-in-time (JIT) VM access — Just-in-time (JIT) VM access in Microsoft Defender for Cloud allows administrators to temporarily open RDP (port 3389) to a virtual machine for a limited time, reducing exposure to brute-force attacks. It integrates with Azure Network Security Groups (NSGs) and Azure Firewall to automatically lock down inbound traffic when not in use, minimizing management overhead by eliminating the need for manual NSG rule changes.
What should I do if I get this AZ-500 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.
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Question Discussion
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