Quick Answer
The answer is to implement client-side retry logic. This is the correct approach because transient network disruptions between an application and its Spanner instance are handled most effectively at the client layer, where exponential backoff and jitter can absorb brief connectivity blips without requiring any infrastructure changes. On the Google Professional Cloud Database Engineer exam, this question tests your understanding that Spanner’s built-in retry mechanisms are designed for exactly this scenario—a common trap is to over-engineer a solution by suggesting multi-region replication or scaling nodes, which do not address local, temporary network hiccups and can actually increase latency. A key memory tip is “retry before redesign”: always exhaust client-side resilience patterns before considering architectural shifts, as adding proxies or regions introduces extra hops that worsen write latency during network issues.
This PCDE practice question tests your understanding of plan and manage database infrastructure. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A company runs a Spanner instance with a single region configuration. They are experiencing increased latency for writes when there is a network disruption between their application and the Spanner instance. The application is deployed in the same region. What should the database engineer do to minimize write latency during such disruptions?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Implement client-side retry logic.
Retry logic handles transient disruptions without architectural change.
Enable multi-region configuration.
Why wrong: Multi-region is for global availability, not for local disruptions.
Use a compute engine instance as a proxy.
Why wrong: Adds extra network hop, worsening latency.
Increase the number of nodes.
Why wrong: More nodes help throughput, not latency during network issues.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Implement client-side retry logic.
Option D is correct because client-side retry logic with appropriate backoff is the standard approach to handle transient network disruptions without requiring architectural changes. Option A (multi-region) increases complexity and doesn't help for local disruptions. Option B (increase nodes) improves throughput but not latency during disruptions. Option C (proxy) adds an extra hop, likely worsening latency.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Implement client-side retry logic.
Why this is correct
Retry logic handles transient disruptions without architectural change.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Enable multi-region configuration.
Why it's wrong here
Multi-region is for global availability, not for local disruptions.
Use a compute engine instance as a proxy.
Why it's wrong here
Adds extra network hop, worsening latency.
Increase the number of nodes.
Why it's wrong here
More nodes help throughput, not latency during network issues.
Common exam traps
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Identify which PCDE 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.
Plan and manage database infrastructure — study guide chapter
Learn the concepts, then practise the questions
Plan and manage database infrastructure practice questions
Targeted practice on this topic area only
All PCDE questions
503 questions across all exam domains
Google Professional Cloud Database Engineer study guide
Full concept coverage aligned to exam objectives
PCDE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise PCDE questions linked to Plan and manage database infrastructure.
Practise PCDE questions linked to Define data structures and implement SQL for Business Intelligence.
Practise PCDE questions linked to Design and implement database schemas.
Practise PCDE questions linked to Monitor and optimize database performance.
Practise PCDE questions linked to PCDE fundamentals.
Practise PCDE questions linked to PCDE scenario.
Practise PCDE questions linked to PCDE troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Plan and manage database infrastructure — This question tests Plan and manage database infrastructure — Read the scenario before looking for a memorised answer..
The correct answer is: Implement client-side retry logic. — Option D is correct because client-side retry logic with appropriate backoff is the standard approach to handle transient network disruptions without requiring architectural changes. Option A (multi-region) increases complexity and doesn't help for local disruptions. Option B (increase nodes) improves throughput but not latency during disruptions. Option C (proxy) adds an extra hop, likely worsening latency.
Identify which PCDE 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.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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: Jun 24, 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.