The answer is to check the posture policy for a specific version requirement. This is correct because the ISE log message "Conditional NAC Agent result: Not Compliant due to missing required application" indicates the application is detected, but the posture policy is enforcing a precise version or patch level that is not present on the endpoint. On the Cisco SCOR 350-701 exam, this scenario tests your understanding of how ISE posture policies evaluate software compliance beyond simple presence, often using version-based conditions. A common trap is assuming the application is missing entirely or that antivirus definitions are the issue, but the key distinction is that the agent reports the application as installed while the policy demands a specific version string. Remember the memory tip: "Installed but not the right build" — if the log says "missing required application" but the app is there, always check the version rule in the posture policy.
350-701 Practice Question: Secure Network Access, Visibility and Enforcement
This 350-701 practice question tests your understanding of secure network access, visibility and enforcement. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
You are troubleshooting a Cisco ISE deployment where some endpoints are stuck in the 'Not Compliant' posture after a posture scan. ISE logs show 'Conditional NAC Agent result: Not Compliant due to missing required application.' The application is installed on the endpoint. What should you check?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The posture policy requires a specific version that is not installed.
Option B is correct. The log indicates a missing application, but it is installed. This often occurs when the posture policy requires a specific version or patch level. Option A is incorrect because antivirus definitions are separate. Option C is incorrect because agent version would cause a different error. Option D is incorrect because firewall blocking would prevent scan results.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The NAC Agent is running an outdated version.
Why it's wrong here
Agent version issues typically cause communication errors, not missing application errors.
✓
The posture policy requires a specific version that is not installed.
Why this is correct
The policy may require a particular version or update, causing the check to fail even if the application exists.
Related concept
Static NAT maps one inside address to one outside address.
✗
The endpoint's firewall is blocking the ISE posture probe.
Why it's wrong here
Firewall blocking would prevent the agent from reporting results.
✗
The antivirus definition file is outdated.
Why it's wrong here
Antivirus definitions are not related to application presence.
Common exam traps
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.
Detailed technical explanation
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.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-701 NAT questions on configuration and troubleshooting.
Secure Network Access, Visibility and Enforcement — This question tests Secure Network Access, Visibility and Enforcement — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: The posture policy requires a specific version that is not installed. — Option B is correct. The log indicates a missing application, but it is installed. This often occurs when the posture policy requires a specific version or patch level. Option A is incorrect because antivirus definitions are separate. Option C is incorrect because agent version would cause a different error. Option D is incorrect because firewall blocking would prevent scan results.
What should I do if I get this 350-701 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 350-701 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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