CCOA Incident Detection And Response Practice Question
You are using an ELK Stack (Elasticsearch, Logstash, Kibana) for incident response. You have identified a time-based spike in traffic. What is the most efficient way to query for the top 10 unique source IP addresses for a specific destination over the last hour using Kibana Discover?
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
✓
Use the 'Top values' aggregation on the source IP field in a Lens visualization
The 'Lens' or 'Visualize' feature in Kibana allows for aggregation by field, which is the most efficient way to summarize top traffic sources.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Use the 'Top values' aggregation on the source IP field in a Lens visualization
Why this is correct
Lens aggregations are optimized for quickly identifying top-N occurrences.
- ✗
Run an 'Update By Query' API call
Why it's wrong here
This modifies data and is not for analytical queries.
- ✗
Use a regex filter in the search bar
Why it's wrong here
Regex is inefficient for frequency counting across millions of records.
- ✗
Export all logs to CSV and use Excel
Why it's wrong here
This is non-scalable and lacks real-time IR capabilities.
About these practice questions
One of 203 original CCOA 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 ISACA exam blueprint
This CCOA practice question is part of Courseiva's free ISACA 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 CCOA exam.