A network engineer needs to investigate why a few users have issues logging on to the NetScaler system. How can the engineer troubleshoot authentication issues on the NetScaler system?

The correct answer is C. Use the CAT aaad.debug command. See the full explanation below for the reasoning.

Question

Options

AUse ECV monitoring.
BRun a violations report in Reporting.
CUse the CAT aaad.debug command.
DCheck the system-authentication setting in the GUI.

How the community answered

(32 responses)

A
6% (2)
B
19% (6)
C
72% (23)
D
3% (1)

Community Discussion

Kemal J.May 3, 2026

C is your answer. The aaad.debug command writes real-time authentication debug output to /tmp/aaad.debug, so you can watch exactly where the login attempt fails, whether that is LDAP bind errors, group extraction problems, or policy mismatches, without rebooting anything or guessing at ECV thresholds.

Ola B.Jun 1, 2026

The wording "a few users" makes D tempting because your first instinct is to check the GUI config, but a misconfigured system-authentication setting would typically break everybody, not just a handful of people. When you need to dig into why specific users are failing, spin up a terminal session and tail aaad.debug with the CAT command so you can watch the authentication flow in real time, which is exactly why C is the answer here.

Kemal J.Jun 1, 2026

C is right for the right reason, but you tail a live log with "tail -f", not cat, unless you enjoy a snapshot and a blinking cursor.

Mei-Ling H.May 21, 2026

I was leaning toward D because "check the system-authentication setting in the GUI" sounds like a natural first step when users cannot log on, but D just shows you the configuration, it does not help you see what is actually happening during a failed authentication attempt. The aaad.debug command is the real-time debug tool for the AAA daemon, so the CAT command in option C is what actually lets you watch authentication traffic live and see where it breaks.

Carlos M.May 18, 2026

Running a violations report in Reporting gives you a concrete log of failed auth attempts with timestamps and user details, which is exactly what you need when only a few users are affected and you want to pinpoint the pattern fast. That targeted view beats digging through raw debug output or checking a system-wide setting that would impact everyone, not just the affected accounts.

-2

Ola B.May 20, 2026

Good point on the violations report, Carlos, but C is the right call here because the System Log gives you the actual error reason tied to each event, not just that a failure occurred, which is what lets you spot whether it is a policy mismatch, a factor enrollment gap, or something else specific to those accounts. The violations report tells you it happened, but the System Log tells you why, and that distinction is what the question is really testing.

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