- A
Use Cloud Armor to whitelist the VM's external IP
Why wrong: Cloud Armor is not compatible with Memorystore (it's for HTTP(S) load balancing).
- B
Use the AUTH password and share it only with the VM
Why wrong: AUTH password controls client authentication, but does not restrict network-level access.
- C
Configure the Memorystore instance with a firewall rule that allows only the VM's internal IP
Correct. Firewall rules can be applied to the VPC to restrict inbound traffic to the Memorystore instance's IP range from only the VM's IP.
- D
Place the Redis instance in a separate VPC and peer only with the VM's VPC
Why wrong: Memorystore uses Private Service Access; it cannot be placed in a separate VPC that is not the service producer.
Question 883 of 1,000
PCDOE Memorystore for Redis Practice Question
This PCDOE practice question tests your understanding of manage database solutions. 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. A key principle to apply: memorystore for Redis. 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 developer is setting up a Memorystore for Redis instance and needs to restrict access to only a specific Compute Engine VM in the same VPC network. Which configuration should they use?
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 Memorystore instance with a firewall rule that allows only the VM's internal IP
Memorystore for Redis uses Private Service Access and requires authorizing a VPC network to access the instance. After authorizing the VPC network, you can restrict access to a specific Compute Engine VM by applying a firewall rule in that VPC that allows traffic from only that VM's internal IP to the Memorystore instance. This is the most granular control available without using additional authentication like AUTH.
Key principle: Memorystore for Redis
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 Cloud Armor to whitelist the VM's external IP
Why it's wrong here
Cloud Armor is not compatible with Memorystore (it's for HTTP(S) load balancing).
- ✗
Use the AUTH password and share it only with the VM
Why it's wrong here
AUTH password controls client authentication, but does not restrict network-level access.
- ✓
Configure the Memorystore instance with a firewall rule that allows only the VM's internal IP
- ✗
Place the Redis instance in a separate VPC and peer only with the VM's VPC
Why it's wrong here
Memorystore uses Private Service Access; it cannot be placed in a separate VPC that is not the service producer.
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
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Memorystore for Redis
- Private Service Access
- Authorized network
- Firewall rule
TExam Day Tips
- 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
Memorystore for Redis
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Review memorystore for Redis, then practise related PCDOE questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this PCDOE question test?
Manage Database Solutions — This question tests Manage Database Solutions — Memorystore for Redis.
What is the correct answer to this question?
The correct answer is: Configure the Memorystore instance with a firewall rule that allows only the VM's internal IP — Memorystore for Redis uses Private Service Access and requires authorizing a VPC network to access the instance. After authorizing the VPC network, you can restrict access to a specific Compute Engine VM by applying a firewall rule in that VPC that allows traffic from only that VM's internal IP to the Memorystore instance. This is the most granular control available without using additional authentication like AUTH.
What should I do if I get this PCDOE question wrong?
Review memorystore for Redis, then practise related PCDOE questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Memorystore for Redis
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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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