Quick Answer
The answer is the RADIUS Authentication Report, which is the correct choice because it specifically logs all authentication attempts, including failed logins, and provides detailed failure reasons such as invalid credentials, user not found, or authorization policy mismatches. This report captures RADIUS Access-Reject messages and the corresponding policy evaluation results, making it the primary tool for troubleshooting failed authentication reasons in Cisco ISE. On the Cisco CyberOps Associate 200-201 exam, this question tests your ability to identify the correct monitoring report for endpoint authentication failures, often appearing as a scenario where a network administrator needs to diagnose why users cannot connect. A common trap is confusing this with the Active Directory or TACACS+ reports, which serve different purposes—remember that RADIUS handles network access authentication, not device administration. Memory tip: think "RADIUS Rejects Reveal Reasons" to recall that this report is your go-to for failed login details.
This 200-201 practice question tests your understanding of security monitoring. 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.
A network administrator is using Cisco ISE to monitor endpoint authentication. Which report provides details on failed authentication attempts and the reasons?
RADIUS Authentication Report
This report includes details of authentication attempts and failure reasons.
Endpoint Profiler Report
Why wrong: This report shows device profiling information, not authentication details.
RADIUS Accounting Report
Why wrong: This report shows accounting data (session time, bytes), not authentication failures.
Active Session Report
Why wrong: This report shows currently active sessions, not failed attempts.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
RADIUS Authentication Report
The RADIUS Authentication Report in Cisco ISE specifically logs all authentication attempts, including failures, and provides detailed reasons for each failure (e.g., invalid credentials, user not found, or authorization policy mismatch). This report is the primary tool for troubleshooting failed authentications because it captures the RADIUS Access-Reject messages and the corresponding failure reasons from the ISE policy evaluation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
RADIUS Authentication Report
Why this is correct
This report includes details of authentication attempts and failure reasons.
Related concept
Read the scenario before looking for a memorised answer.
Endpoint Profiler Report
Why it's wrong here
This report shows device profiling information, not authentication details.
RADIUS Accounting Report
Why it's wrong here
This report shows accounting data (session time, bytes), not authentication failures.
Active Session Report
Why it's wrong here
This report shows currently active sessions, not failed attempts.
Common exam traps
Cisco often tests the distinction between RADIUS Authentication (which captures failures and reasons) and RADIUS Accounting (which tracks session usage), leading candidates to mistakenly choose the Accounting report when asked about failed authentications.
Trap categories for this question
Command / output trap
This report shows device profiling information, not authentication details.
Detailed technical explanation
Under the hood, the RADIUS Authentication Report correlates each authentication attempt with the RADIUS Access-Request and Access-Reject packets, parsing the Reply-Message attribute (e.g., RFC 2865) to extract failure reasons. In a real-world scenario, if a user is locked out due to repeated failures, this report helps identify the exact policy rule that denied access, such as a mismatched identity source sequence or an Authorization Profile that requires a specific AD group membership.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A junior network technician can log in to a core router but cannot reach the enable prompt or configuration mode. The AAA server is authenticating the login — but the authorisation policy only grants privilege level 1, not 15. Authentication (who you are) is working; authorisation (what you can do) is not.
What to study next
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FAQ
Security Monitoring — This question tests Security Monitoring — Read the scenario before looking for a memorised answer..
The correct answer is: RADIUS Authentication Report — The RADIUS Authentication Report in Cisco ISE specifically logs all authentication attempts, including failures, and provides detailed reasons for each failure (e.g., invalid credentials, user not found, or authorization policy mismatch). This report is the primary tool for troubleshooting failed authentications because it captures the RADIUS Access-Reject messages and the corresponding failure reasons from the ISE policy evaluation.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
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