Cloud Digital Leader Trust and security with Google Cloud Practice Question
This GCDL practice question tests your understanding of trust and security with google cloud. 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.
Which THREE practices are recommended for securing a Kubernetes cluster in Google Kubernetes Engine (GKE)?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Binary Authorization to ensure only trusted container images are deployed
Binary Authorization is correct because it enforces deployment-time policy validation, ensuring that only container images signed by trusted authorities (e.g., via KMS) are allowed to run in GKE. This prevents the deployment of untrusted or tampered images, directly addressing supply chain security.
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 Binary Authorization to ensure only trusted container images are deployed
Why this is correct
Binary Authorization enforces deployment signing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable node auto-repair to automatically fix security vulnerabilities in nodes
Why it's wrong here
Node auto-repair helps with node health, not security vulnerabilities; node auto-upgrade addresses security patches.
✓
Enable GKE Sandbox for untrusted workloads to provide an additional layer of isolation
Why this is correct
GKE Sandbox uses gVisor for sandboxing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Expose the cluster control plane via a public endpoint to allow monitoring
Why it's wrong here
Public endpoint increases attack surface; use private endpoint.
✓
Enable Workload Identity to manage access to Google Cloud APIs
Why this is correct
Workload Identity allows fine-grained permissions for pods.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the distinction between operational features (like node auto-repair) and security features, so candidates mistakenly assume auto-repair patches vulnerabilities when it only restores node health, not applies security updates.
Detailed technical explanation
How to think about this question
Binary Authorization integrates with GKE via admission webhooks, evaluating image signatures against a policy (e.g., requiring attestations from a specific key). Under the hood, it uses the Container Analysis API to store attestations and the Binary Authorization API to enforce policy at pod creation time. In a real-world CI/CD pipeline, this ensures that only images built and signed by your trusted build system can reach production, blocking any unsigned or compromised images.
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.
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
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this GCDL question in full detail.
Trust and security with Google Cloud — This question tests Trust and security with Google Cloud — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Binary Authorization to ensure only trusted container images are deployed — Binary Authorization is correct because it enforces deployment-time policy validation, ensuring that only container images signed by trusted authorities (e.g., via KMS) are allowed to run in GKE. This prevents the deployment of untrusted or tampered images, directly addressing supply chain security.
What should I do if I get this GCDL question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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