The correct answer is least privilege. This security principle is demonstrated because restricting RDP access to only a dedicated jump server’s IP address ensures that no other host or user can directly initiate remote desktop connections to production servers, granting only the minimum necessary network access for administrative tasks. On the Microsoft SC-900 exam, this scenario tests your understanding of how least privilege limits lateral movement and reduces the attack surface by enforcing strict network segmentation. A common trap is confusing this with defense in depth, which involves multiple layers of security rather than a single access control. Remember the memory tip: “Jump to the jump server” — if only one specific host can RDP in, you’ve locked down privileges to the absolute minimum.
SC-900 Practice Question: Describe the concepts of security, compliance, and identity
This SC-900 practice question tests your understanding of describe the concepts of security, compliance, and identity. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A company's security team configures network firewall rules so that only a dedicated jump server's IP address can initiate RDP connections to production servers. This is an example of which security principle?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Least privilege
Restricting RDP access to only a dedicated jump server's IP address ensures that no other hosts or users can directly initiate remote desktop connections to production servers. This enforces the principle of least privilege by granting only the minimum necessary network access (the jump server) required for administrative tasks, reducing the attack surface and limiting lateral movement.
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.
✓
Least privilege
Why this is correct
By restricting RDP access to only the jump server, the company is following the principle of least privilege, giving only the minimum access needed.
Related concept
Read the scenario before looking for a memorised answer.
✗
Defense in depth
Why it's wrong here
Defense in depth involves multiple layers of security controls. This scenario describes a single control, not multiple layers.
✗
Zero Trust
Why it's wrong here
Zero Trust assumes no implicit trust and constantly verifies. While related, this specific control is a direct example of least privilege.
✗
Separation of duties
Why it's wrong here
Separation of duties ensures that no single person has excessive control. This scenario restricts access paths, not splitting roles.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse 'least privilege' (limiting access to what is necessary) with 'defense in depth' (multiple layers), because both involve restricting access, but least privilege focuses on the minimal permissions while defense in depth focuses on layered controls.
Trap categories for this question
Scenario analysis trap
Defense in depth involves multiple layers of security controls. This scenario describes a single control, not multiple layers.
Detailed technical explanation
How to think about this question
Under the hood, the firewall rule uses a 5-tuple (source IP, destination IP, protocol, source port, destination port) to permit TCP/3389 only from the jump server's IP. In a real-world scenario, this prevents attackers from brute-forcing RDP credentials directly from the internet; even if a production server is compromised, lateral movement is blocked because only the jump server can initiate RDP. This aligns with the Microsoft recommended 'jump box' architecture for securing Azure VMs.
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 SC-900 question in full detail.
Describe the concepts of security, compliance, and identity — This question tests Describe the concepts of security, compliance, and identity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Least privilege — Restricting RDP access to only a dedicated jump server's IP address ensures that no other hosts or users can directly initiate remote desktop connections to production servers. This enforces the principle of least privilege by granting only the minimum necessary network access (the jump server) required for administrative tasks, reducing the attack surface and limiting lateral movement.
What should I do if I get this SC-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.
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Question Discussion
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