Manage a solution that can span multiple database technologies →mediumMultiple ChoiceObjective-mapped
PCDE Practice Question: Manage a solution that can span multiple database technologies
A Cloud Bigtable instance is experiencing high latency on reads. The operations team suspects a hot spot. Which tool should they use to identify the hot spot?
⚠ Common exam trap
The PCDOE exam often tests the distinction between general monitoring tools (Cloud Monitoring) and purpose-built diagnostic tools (Key Visualizer), trapping candidates who assume any monitoring dashboard can identify hot spots without row-key-level granularity.
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
✓
Key Visualiser
Key Visualizer is the correct tool because it is specifically designed to visualize access patterns in Cloud Bigtable and identify hot spots—regions of a table that receive disproportionate read/write traffic. It generates heatmaps of row key access, allowing operators to pinpoint uneven load distribution that causes high latency.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Stackdriver Debugger
Why it's wrong here
Debugger is for code inspection, not for database hot spot analysis.
- ✗
Bigtable cbt tool
Why it's wrong here
The cbt tool is for interacting with tables, not for hot spot analysis.
- ✓
Key Visualiser
Why this is correct
Correct. Key Visualiser provides a heatmap of row key access patterns to detect hot spots.
- ✗
Cloud Monitoring dashboard
Why it's wrong here
Cloud Monitoring shows metrics like latency but does not pinpoint hot spots at the row key level.
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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.