- A
Replication lag (for instances with replicas)
Replication lag indicates if replicas are falling behind.
- B
Number of queries per second
Why wrong: Useful for capacity planning but not a direct health metric.
- C
CPU utilization > 80%
High CPU can indicate performance issues.
- D
Network throughput
Why wrong: Less critical for proactive health monitoring.
- E
Disk usage
High disk usage can cause instance to stop.
Question 513 of 1,000
PCDOE Manage Database Solutions Practice Question
This PCDOE practice question tests your understanding of manage database solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Which THREE metrics should you set up alerts for to proactively monitor the health of a Cloud SQL for MySQL instance? (Choose 3)
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
✓
Replication lag (for instances with replicas)
Replication lag is a critical metric for Cloud SQL for MySQL instances with replicas because it measures the delay between the primary instance and its read replicas. High replication lag can lead to stale reads and data inconsistency, and if it exceeds certain thresholds, it may indicate network issues, high write load, or insufficient replica resources. Proactive alerts on replication lag help ensure data freshness and application reliability.
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.
- ✓
Replication lag (for instances with replicas)
Why this is correct
Replication lag indicates if replicas are falling behind.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Number of queries per second
Why it's wrong here
Useful for capacity planning but not a direct health metric.
- ✓
CPU utilization > 80%
Why this is correct
High CPU can indicate performance issues.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Network throughput
Why it's wrong here
Less critical for proactive health monitoring.
- ✓
Disk usage
Why this is correct
High disk usage can cause instance to stop.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between metrics that indicate health (e.g., replication lag, CPU utilization, disk usage) versus metrics that indicate performance or throughput (e.g., queries per second, network throughput), leading candidates to select the latter as health indicators.
Detailed technical explanation
How to think about this question
Replication lag in Cloud SQL for MySQL is measured in seconds and can be monitored via the `seconds_behind_master` metric, which tracks the time difference between the primary and replica's apply position. CPU utilization above 80% often triggers query throttling or performance degradation, as MySQL's internal scheduler may struggle with context switching under high load. Disk usage alerts are crucial because Cloud SQL instances have a maximum storage limit, and running out of space can cause the database to become read-only or crash, with no automatic recovery without manual intervention.
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.
TExam Day Tips
- 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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Manage Database Solutions — study guide chapter
Learn the concepts, then practise the questions
- →
Manage Database Solutions practice questions
Targeted practice on this topic area only
- →
All PCDOE questions
1,000 questions across all exam domains
- →
Google Professional Cloud DevOps Engineer study guide
Full concept coverage aligned to exam objectives
- →
PCDOE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCDOE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design and Plan Database Solutions practice questions
Practise PCDOE questions linked to Design and Plan Database Solutions.
Manage Database Solutions practice questions
Practise PCDOE questions linked to Manage Database Solutions.
Migrate Database Solutions practice questions
Practise PCDOE questions linked to Migrate Database Solutions.
Design for Reliability, Scalability, and Disaster Recovery practice questions
Practise PCDOE questions linked to Design for Reliability, Scalability, and Disaster Recovery.
Bootstrapping a Google Cloud organization for DevOps practice questions
Practise PCDOE questions linked to Bootstrapping a Google Cloud organization for DevOps.
Managing service incidents practice questions
Practise PCDOE questions linked to Managing service incidents.
Managing Google Cloud costs practice questions
Practise PCDOE questions linked to Managing Google Cloud costs.
Building and implementing CI/CD pipelines practice questions
Practise PCDOE questions linked to Building and implementing CI/CD pipelines.
Implementing service monitoring strategies practice questions
Practise PCDOE questions linked to Implementing service monitoring strategies.
Optimizing service performance practice questions
Practise PCDOE questions linked to Optimizing service performance.
PCDOE fundamentals practice questions
Practise PCDOE questions linked to PCDOE fundamentals.
PCDOE scenario practice questions
Practise PCDOE questions linked to PCDOE scenario.
Practice this exam
Start a free PCDOE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PCDOE question test?
Manage Database Solutions — This question tests Manage Database Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Replication lag (for instances with replicas) — Replication lag is a critical metric for Cloud SQL for MySQL instances with replicas because it measures the delay between the primary instance and its read replicas. High replication lag can lead to stale reads and data inconsistency, and if it exceeds certain thresholds, it may indicate network issues, high write load, or insufficient replica resources. Proactive alerts on replication lag help ensure data freshness and application reliability.
What should I do if I get this PCDOE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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 PCDOE 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 PCDOE 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.