Question 47 of 1,446
PCDE Practice Question: Manage a solution that can span multiple database technologies
Your Cloud Bigtable instance is experiencing hot spots, causing performance degradation. You want to identify the specific row keys causing the hot spots. Which tool should you use?
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 Visualiser is a Cloud Bigtable tool that visualises read/write traffic across the row key space, helping identify hot spots (rows with disproportionate traffic). Cloud Monitoring provides overall metrics but not row-level detail. Cloud Logging logs queries but not aggregated heat maps. cbt is the command-line tool for administrative tasks but does not provide visualisation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cloud Monitoring dashboard
Why it's wrong here
Cloud Monitoring provides instance-level metrics but not row-key-level heat mapping.
- ✓
Key Visualiser
Why this is correct
Key Visualiser is specifically designed to detect hot spots by showing traffic distribution across row keys.
- ✗
cbt command-line tool
Why it's wrong here
cbt does not have hot spot detection capabilities.
- ✗
Cloud Logging
Why it's wrong here
Cloud Logging can show individual requests but not aggregated hot spot patterns.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more way this is tested on PCDE
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A Cloud Bigtable instance has a hot spot causing performance degradation. Which tool helps identify the hot spot?
easy- A.Cloud Monitoring dashboard
- B.Cloud Logging
- ✓ C.Key Visualizer
- D.Bigtable Admin API
Why C: Key Visualizer is a built-in Bigtable tool that visualizes access patterns and helps identify hot spots (uneven load across row keys).
Last reviewed: Jul 4, 2026
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.