- A
Vertically scale the instance by increasing its memory size or changing to a higher-tier (e.g., Standard Tier).
Vertical scaling increases capacity by adding more memory to a single node.
- B
Create additional instances and implement client-side sharding.
Why wrong: Client-side sharding is not a managed feature; Memorystore provides native Redis Cluster.
- C
Change the eviction policy to noeviction to allow more data.
Why wrong: Changing eviction policy does not increase capacity; it only changes behavior when memory is full.
- D
Add read replicas to offload read traffic.
Why wrong: Read replicas are not supported in Memorystore; replication is for high availability, not scaling read capacity for Redis.
- E
Enable Redis Cluster to horizontally scale across multiple shards.
Redis Cluster distributes data across multiple nodes for horizontal scaling.
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.
You have a Memorystore for Redis instance used as a cache. You need to scale it to handle increased load. The current instance is Basic Tier with 2 GB memory. Which TWO actions can you take to scale the instance? (Choose two.)
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
Vertically scale the instance by increasing its memory size or changing to a higher-tier (e.g., Standard Tier).
Memorystore supports vertical scaling by changing the tier (e.g., from Basic to Standard, or increasing memory size) and horizontal scaling using Redis Cluster (which shards data across multiple nodes). Scaling up within the same tier by increasing memory is also possible, but option A (vertical scaling) and option B (Redis Cluster) are the two general scaling methods.
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.
- ✓
Vertically scale the instance by increasing its memory size or changing to a higher-tier (e.g., Standard Tier).
Why this is correct
Vertical scaling increases capacity by adding more memory to a single node.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create additional instances and implement client-side sharding.
Why it's wrong here
Client-side sharding is not a managed feature; Memorystore provides native Redis Cluster.
- ✗
Change the eviction policy to noeviction to allow more data.
Why it's wrong here
Changing eviction policy does not increase capacity; it only changes behavior when memory is full.
- ✗
Add read replicas to offload read traffic.
Why it's wrong here
Read replicas are not supported in Memorystore; replication is for high availability, not scaling read capacity for Redis.
- ✓
Enable Redis Cluster to horizontally scale across multiple shards.
Why this is correct
Redis Cluster distributes data across multiple nodes for horizontal scaling.
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: Vertically scale the instance by increasing its memory size or changing to a higher-tier (e.g., Standard Tier). — Memorystore supports vertical scaling by changing the tier (e.g., from Basic to Standard, or increasing memory size) and horizontal scaling using Redis Cluster (which shards data across multiple nodes). Scaling up within the same tier by increasing memory is also possible, but option A (vertical scaling) and option B (Redis Cluster) are the two general scaling methods.
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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