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ACE Practice Question: A team builds a GKE application that processes…
This ACE practice question tests your understanding of a team builds a gke application that processes…. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 team builds a GKE application that processes healthcare data. Regulatory requirements mandate that data in transit between GKE nodes must be encrypted. GKE is running on GCP. What provides encrypted node-to-node traffic within the cluster?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Enable VPC Flow Logs — they activate encryption for logged traffic
VPC Flow Logs capture metadata for analysis — they have no effect on traffic encryption.
B
Distractor review
GKE node traffic is unencrypted by default — mTLS must be manually configured on every Pod
GCP's network-level encryption protects VM-to-VM traffic including GKE nodes. mTLS adds an additional application-layer encryption layer but the underlying network traffic is already encrypted.
C
Best answer
GCP automatically encrypts all VM-to-VM traffic in transit within its network
Google Cloud encrypts data in transit between physical boundaries and virtual machines using encryption at the Google network layer. GKE node-to-node traffic within GCP is covered by this encryption.
D
Distractor review
Install a TLS termination proxy on each GKE node — it encrypts intranode traffic
Node-level TLS proxies are not required — GCP's network layer already encrypts VM-to-VM traffic, and Anthos Service Mesh handles application-layer encryption.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Related practice questions
Related ACE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
What is the correct order of the Google Cloud resource hierarchy from highest to lowest level?
Question 2
A compliance archive stores legal documents accessed at most once per quarter. Which Cloud Storage class minimizes storage cost while meeting that access pattern?
Question 3
Which gcloud command creates a Compute Engine VM named 'web-01' using the e2-medium machine type in zone us-central1-a?
Question 4
A team wants to receive an email alert when the average CPU utilization of VMs in a managed instance group exceeds 80% for more than 5 minutes. What should they create in Cloud Monitoring?
Question 5
A junior developer needs read-only access to all GCP resources in a project. Which IAM role grants the minimum permissions required?
Question 6
A startup creates its first Google Cloud project. Before deploying any paid resources, what must be linked to the project?
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FAQ
Questions learners often ask
What does this ACE question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: GCP automatically encrypts all VM-to-VM traffic in transit within its network — GKE on GCP encrypts node-to-node traffic automatically using Google's internal network encryption (virtual machine-to-VM traffic within GCP is encrypted). For additional guarantees, Anthos Service Mesh with mTLS encrypts application-layer traffic between Pods. GKE Dataplane V2 with encryption can also enforce encrypted Pods-to-Pod communication.
What should I do if I get this ACE question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related ACE NAT questions on configuration and troubleshooting.
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