- A
The cbt command-line tool
Why wrong: cbt is for administrative tasks, not hot spot analysis.
- B
Key Visualiser
Key Visualiser is purpose-built for identifying hot spots in Bigtable.
- C
Bigtable Studio
Why wrong: Bigtable Studio is not a real GCP tool.
- D
Cloud Monitoring (formerly Stackdriver)
Why wrong: Cloud Monitoring provides metrics but not the specific hot spot visualisation that Key Visualiser offers.
Question 794 of 980
Deploy Scalable and Highly Available Databases in Google Cloud →mediumMultiple ChoiceObjective-mapped
PCD Practice Question: Deploy Scalable and Highly Available Databases in Google Cloud
This PCD practice question tests your understanding of deploy scalable and highly available databases in google cloud. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An engineer is monitoring Cloud Bigtable performance and notices high read latency. They suspect a hot spot issue. Which tool should they use to identify the hot spot?
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
Cloud Bigtable's Key Visualiser is a tool specifically designed to detect and visualize hot spots (uneven distribution of read/write load across row keys). It helps identify row key patterns causing performance issues. Stackdriver is the legacy name for Cloud Monitoring; Cloud Monitoring can show overall metrics but not hot spot analysis. Bigtable Studio does not exist. cbt is the CLI tool.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The cbt command-line tool
Why it's wrong here
cbt is for administrative tasks, not hot spot analysis.
- ✓
Key Visualiser
Why this is correct
Key Visualiser is purpose-built for identifying hot spots in Bigtable.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Bigtable Studio
Why it's wrong here
Bigtable Studio is not a real GCP tool.
- ✗
Cloud Monitoring (formerly Stackdriver)
Why it's wrong here
Cloud Monitoring provides metrics but not the specific hot spot visualisation that Key Visualiser offers.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Identify which PCD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Deploy Scalable and Highly Available Databases in Google Cloud — study guide chapter
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FAQ
Questions learners often ask
What does this PCD question test?
Deploy Scalable and Highly Available Databases in Google Cloud — This question tests Deploy Scalable and Highly Available Databases in Google Cloud — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Key Visualiser — Cloud Bigtable's Key Visualiser is a tool specifically designed to detect and visualize hot spots (uneven distribution of read/write load across row keys). It helps identify row key patterns causing performance issues. Stackdriver is the legacy name for Cloud Monitoring; Cloud Monitoring can show overall metrics but not hot spot analysis. Bigtable Studio does not exist. cbt is the CLI tool.
What should I do if I get this PCD question wrong?
Identify which PCD exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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 →
Last reviewed: Jul 4, 2026
This PCD 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 PCD exam.
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