Question 355 of 1,446
PCDE Practice Question: Manage a solution that can span multiple database technologies
A team is using Cloud SQL for PostgreSQL and wants to monitor replication lag on their read replicas. Which metric should they 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
✓
cloudsql.googleapis.com/database/replication/lag
Cloud SQL provides a metric called 'replication_lag' for read replicas, which measures the time (in seconds) the replica is behind the primary. CPU utilisation and disk usage are for performance, not replication. For PostgreSQL, the metric is valid.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
cloudsql.googleapis.com/database/replication/lag
Why this is correct
This metric directly shows the replication lag in seconds.
- ✗
cloudsql.googleapis.com/database/network/received_bytes_count
Why it's wrong here
Network bytes received does not measure replication lag.
- ✗
cloudsql.googleapis.com/database/disk/bytes_used
Why it's wrong here
Disk usage does not indicate replication lag.
- ✗
cloudsql.googleapis.com/database/cpu/utilization
Why it's wrong here
CPU utilisation measures compute usage, not replication lag.
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 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.