mediumMultiple ChoiceObjective-mapped
CISA Practice Question: Refer to the exhibit
Exhibit
Refer to the exhibit. ``` Event Viewer: Security Log Event ID: 4624 (Successful Logon) Account Name: jdoe Logon Type: 3 (Network) Source Network Address: 10.0.0.15 Workstation Name: WS-FINANCE Logon Process: NtLmSsp Authentication Package: NTLM Event ID: 4624 (Successful Logon) Account Name: jdoe Logon Type: 10 (Remote Interactive) Source Network Address: 192.168.10.50 Logon Process: User32 Authentication Package: Negotiate Event ID: 4634 (Logoff) Account Name: jdoe Logon Time: 2020-06-01 23:45:12 ```
Refer to the exhibit. An auditor reviews the security log of a sensitive server. Which of the following is the MOST suspicious event?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The remote interactive logon from IP 192.168.10.50 using NTLM
The most suspicious because it indicates a remote interactive logon (Logon Type 10) from IP 192.168.10.50 using NTLM authentication. Remote interactive logons from unfamiliar IP addresses, especially when using older protocols like NTLM, may indicate an unauthorized remote desktop (RDP) attempt. Option A (Negotiate package) is standard for domain authentication; Option B (logoff) is a normal event; Option D shows a logon from a known workstation (WS-FINANCE) on a different subnet, which is less suspicious than an unknown remote IP.
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 use of Negotiate authentication package
Why it's wrong here
Negotiate is common and not suspicious.
- ✗
The logoff event at 23:45:12
Why it's wrong here
A logoff after a logon is normal.
- ✓
The remote interactive logon from IP 192.168.10.50 using NTLM
Why this is correct
Remote interactive logon allows interactive access, and the source IP is different from the usual internal range; NTLM is less secure.
- ✗
The logon from workstation WS-FINANCE at 10.0.0.15
Why it's wrong here
This appears to be a normal network logon from a known workstation.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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