- A
Schedule regular exports of the instance data to Cloud Storage using gcloud
Exports can be done via the gcloud redis instances export command (or using the console) to create backups in Cloud Storage.
- B
Configure cross-region replication to have a replica in another region
Cross-region replica provides failover capability for zone/region failure.
- C
Use a Redis Cluster with multiple shards for horizontal scaling
Why wrong: Horizontal scaling improves performance and capacity, not durability or zone failure recovery.
- D
Enable RDB persistence on the primary instance
Why wrong: Memorystore does not support RDB persistence.
- E
Set up a second instance in a different zone and use client-side replication
Although Memorystore does not support native active-passive across zones for standard tier, client-side replication or using the cross-region replica feature (if available) can help. For standard tier, a read replica in a different zone can be promoted. This answer is acceptable for zone failure recovery.
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.
A company runs a Memorystore for Redis cluster with standard tier (for replication). They need to ensure high durability of session data and be able to recover from a complete zone failure. Which three actions should they take? (Choose THREE.)
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
Schedule regular exports of the instance data to Cloud Storage using gcloud
For durability, cross-region replication provides HA across zones. Enabling persistence (RDB/AOF) is not supported in Memorystore. Regular exports to Cloud Storage can be used for backup. Scaling horizontally with Redis Cluster can improve performance but not durability. AUTH is for security, not durability.
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.
- ✓
Schedule regular exports of the instance data to Cloud Storage using gcloud
Why this is correct
Exports can be done via the gcloud redis instances export command (or using the console) to create backups in Cloud Storage.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Configure cross-region replication to have a replica in another region
Why this is correct
Cross-region replica provides failover capability for zone/region failure.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a Redis Cluster with multiple shards for horizontal scaling
Why it's wrong here
Horizontal scaling improves performance and capacity, not durability or zone failure recovery.
- ✗
Enable RDB persistence on the primary instance
Why it's wrong here
Memorystore does not support RDB persistence.
- ✓
Set up a second instance in a different zone and use client-side replication
Why this is correct
Although Memorystore does not support native active-passive across zones for standard tier, client-side replication or using the cross-region replica feature (if available) can help. For standard tier, a read replica in a different zone can be promoted. This answer is acceptable for zone failure recovery.
Related concept
Read the scenario before looking for a memorised answer.
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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Manage Database Solutions practice 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: Schedule regular exports of the instance data to Cloud Storage using gcloud — For durability, cross-region replication provides HA across zones. Enabling persistence (RDB/AOF) is not supported in Memorystore. Regular exports to Cloud Storage can be used for backup. Scaling horizontally with Redis Cluster can improve performance but not durability. AUTH is for security, not durability.
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
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 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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