Managing Implementation and Ensuring Solution and Operations Reliability →mediumMultiple ChoiceObjective-mapped
Google PCA Practice Question: Managing Implementation and Ensuring Solution and Operations Reliability
A company uses Cloud Spanner in a multi-region configuration. They want to ensure the highest availability with an SLA of 99.999%. Which configuration supports this?
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
✓
Multi-region configuration with three regions
Cloud Spanner multi-region configurations are designed for 99.999% availability. The default multi-region setups (e.g., nam3, eur3) include three regions with automatic failover. A single-region configuration offers 99.99%. Multi-region with two regions does not provide the same SLA.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Single-region configuration
Why it's wrong here
Single-region Spanner offers 99.99% SLA, not 99.999%.
- ✓
Multi-region configuration with three regions
Why this is correct
Spanner multi-region configurations with three regions (e.g., nam3) are designed for 99.999% availability.
- ✗
Dual-region configuration with read replicas
Why it's wrong here
Read replicas do not participate in write availability; they are for read scaling.
- ✗
Multi-region configuration with two regions
Why it's wrong here
Two regions may not achieve 99.999% SLA; Spanner multi-region typically uses three or more regions for that SLA.
Go deeper
Related to this question
Learn chapter
Introduction to Google Cloud Platform
Key term
SLA
A Service Level Agreement (SLA) is a contract between a service provider and a customer that defines the level of service expected, including metrics like uptime, response time, and penalties for non-compliance.
Key term
Multi-region
Multi-region refers to a deployment strategy where IT resources, applications, or data are hosted in multiple geographic locations to improve availability, disaster recovery, and performance.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCA 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 PCA exam.