PCDE Practice Question: Deploy scalable and highly available databases in Google Cloud
A company runs a critical application on AlloyDB with a primary instance and a read pool. They want to achieve the fastest possible automatic failover during a zone outage, with minimal data loss. What is the expected RTO and RPO for AlloyDB's automatic failover within the same region?
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
✓
RTO < 30 seconds, RPO ~ 0
AlloyDB provides automatic failover to a standby node within the same region, typically completing in under 30 seconds. Replication is synchronous within the region, so RPO is zero (no data loss).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
RTO < 5 minutes, RPO ~ 1 second
Why it's wrong here
RTO is much shorter, and RPO is zero, not 1 second.
- ✗
RTO < 60 seconds, RPO ~ 0
Why it's wrong here
AlloyDB failover is faster than 60 seconds; typically under 30 seconds.
- ✗
RTO < 30 seconds, RPO < 1 minute
Why it's wrong here
RPO is zero, not < 1 minute.
- ✓
RTO < 30 seconds, RPO ~ 0
Why this is correct
AlloyDB high-availability failover occurs in under 30 seconds with zero data loss due to synchronous replication.
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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.