PCDE Practice Question: Manage a solution that can span multiple database technologies
A large enterprise uses Cloud Bigtable for analytics. They notice that some nodes are handling significantly more traffic than others, causing hot spots and performance degradation. Which tool should they use to identify the specific row keys causing the issue?
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
✓
Bigtable Key Visualiser
Key Visualiser is a Bigtable tool that provides a heatmap of row key access patterns, helping to identify hot spots by showing which row key ranges are heavily accessed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Bigtable Key Visualiser
Why this is correct
Correct. Key Visualiser visualizes access patterns to identify hot spots.
- ✗
Stackdriver Error Reporting
Why it's wrong here
Error Reporting shows application errors, not hot spots.
- ✗
Bigtable cbt tool with read rows command
Why it's wrong here
The cbt tool can read data but does not provide a visual heatmap for hot spot detection.
- ✗
Cloud Monitoring dashboard for Bigtable
Why it's wrong here
Cloud Monitoring shows aggregate metrics like CPU load, but not per-row-key detail.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCDE practice question is part of Courseiva's free Google Cloud 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 PCDE exam.