ISC Security Operations Practice Question
Which TWO data sources are most critical for detecting lateral movement within a corporate network?
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
✓
Authentication logs (e.g., Kerberos/LDAP)
Lateral movement is characterized by network traffic between internal hosts and authentication logs indicating access attempts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Authentication logs (e.g., Kerberos/LDAP)
Why this is correct
Authentication logs show the 'who' and 'where' of credential usage on other hosts.
- ✗
External DNS query logs
Why it's wrong here
DNS logs monitor external traffic requests.
- ✓
Internal firewall traffic logs
Why this is correct
Traffic logs show east-west movement between internal segments.
- ✗
Public web server logs
Why it's wrong here
Web server logs monitor traffic to public applications.
- ✗
VPN gateway logs
Why it's wrong here
VPN logs monitor entry, not internal movement.
About these practice questions
One of 219 original ISC practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official (ISC)² exam blueprint
This ISC practice question is part of Courseiva's free (ISC)² certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ISC exam.