- A
Use a Basic Tier instance with a large maxmemory setting.
Why wrong: Basic Tier has no replication; a node failure causes data loss.
- B
Configure the instance as Standard Tier (with replication) and schedule periodic exports to Cloud Storage.
Standard Tier provides high availability via replication, and exports to Cloud Storage provide persistence.
- C
Enable persistence by setting the 'persistence' parameter to 'rdb' in the instance configuration.
Why wrong: Memorystore does not support RDB persistence; it only allows manual export/import.
- D
Enable AOF persistence in the Memorystore instance.
Why wrong: Memorystore does not support AOF persistence. It only supports snapshots via export.
Question 815 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.
Your Memorystore for Redis instance is used as a session store for a web application. You need to ensure that session data is not lost during a node failure. What should you do?
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
✓
Configure the instance as Standard Tier (with replication) and schedule periodic exports to Cloud Storage.
Memorystore for Redis does not provide native persistence. To achieve high availability and durability, you can use a cross-region replica (Standard Tier with replication) or take regular snapshots to Cloud Storage. The Standard Tier with replication provides in-memory replication across zones; in case of a node failure, the replica can take over. However, data is still not persisted to disk. For durability, you need to export data to Cloud Storage periodically.
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.
- ✗
Use a Basic Tier instance with a large maxmemory setting.
Why it's wrong here
Basic Tier has no replication; a node failure causes data loss.
- ✓
Configure the instance as Standard Tier (with replication) and schedule periodic exports to Cloud Storage.
Why this is correct
Standard Tier provides high availability via replication, and exports to Cloud Storage provide persistence.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable persistence by setting the 'persistence' parameter to 'rdb' in the instance configuration.
Why it's wrong here
Memorystore does not support RDB persistence; it only allows manual export/import.
- ✗
Enable AOF persistence in the Memorystore instance.
Why it's wrong here
Memorystore does not support AOF persistence. It only supports snapshots via export.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Identify which PCDOE 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.
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Manage Database Solutions — study guide chapter
Learn the concepts, then practise the questions
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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: Configure the instance as Standard Tier (with replication) and schedule periodic exports to Cloud Storage. — Memorystore for Redis does not provide native persistence. To achieve high availability and durability, you can use a cross-region replica (Standard Tier with replication) or take regular snapshots to Cloud Storage. The Standard Tier with replication provides in-memory replication across zones; in case of a node failure, the replica can take over. However, data is still not persisted to disk. For durability, you need to export data to Cloud Storage periodically.
What should I do if I get this PCDOE question wrong?
Identify which PCDOE 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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.
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