CGOA試験問題集、CGOA練習テスト問題
PDF問題（2026年最新）実際のLinux Foundation CGOA試験問題
Linux Foundation CGOA 認定試験の出題範囲：
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質問 # 33
Which requirement of the GitOps principle declares that Desired State must be versioned?
- A. The Desired State must be publicly accessible.
- B. The State Store must retain a complete version history.
- C. You must use Git in order to be compliant with this principle.
- D. The Desired State must not be publicly accessible.
正解：B
解説：
One of the GitOps principles isVersioned and Immutable, which requires that the Desired State is stored in a system that maintains acomplete version history. This allows for auditing, traceability, and rollback.
"The Desired State must be stored in a versioned, immutable system. The State Store must retain a complete version history so changes can be audited and previous states can be restored." Thus, the correct answer isB.
References:GitOps Principles (CNCF GitOps Working Group),Principle 2: Versioned and Immutable.
質問 # 34
What is one of the key benefits of a pull-based reconciliation approach to configuration management?
- A. Simplified troubleshooting and debugging processes.
- B. Immediate response time to configuration changes.
- C. Agents can access the Desired State at any time, not only when an event is triggered.
- D. The CI has access credentials to the running system.
正解：C
解説：
In GitOps, thepull-based reconciliation approachmeans that agents continuously monitor the Desired State in Git. Unlike push-based systems, which only act when triggered, pull-based systems can reconcile at any time, providing resilience, self-healing, and security (since no external system needs direct access to the cluster).
"In a pull-based model, reconciliation agents continuously fetch and compare the desired state, enabling self- healing and ensuring the desired configuration is accessible at all times." Thus, the correct answer isB.
References:GitOps Principles (CNCF GitOps Working Group), Pull vs. Push reconciliation models.
質問 # 35
In GitOps, which option describesState Storemanagement?
- A. Storing state information in a relational database.
- B. Storing state information in a version control system.
- C. Storing state information in a centralized database.
- D. Storing state information in a distributed file system.
正解：B
解説：
TheState Storeis typically implemented using aversion control system (VCS)such as Git. This ensures that the system's state is auditable, versioned, and immutable. Other systems like databases or distributed file systems do not meet the immutability and versioning requirements of GitOps.
"In GitOps, the desired state must be stored in a version control system. This serves as the State Store, providing a complete, immutable, and auditable history of changes." Thus, the correct answer isD: version control system.
References:GitOps Terminology (CNCF GitOps Working Group).
質問 # 36
You are working on a GitOps project and want to ensure that the configuration files are written in a standardized format. What is the recommended way to ensure this?
- A. Ignore the formatting issues and focus on the functionality of the configuration files.
- B. Ask team members to manually review each other's configuration files for formatting issues.
- C. Manually review each configuration file to check for any formatting issues.
- D. Use a linter tool to automatically check the configuration files for formatting issues.
正解：D
解説：
Linting tools are essential in GitOps practices for maintaining consistency, standardization, and quality in configuration files. Automated linters can validate YAML manifests, Helm charts, or Kustomize overlays for formatting and best practices.
"Linters automate the enforcement of formatting and quality rules in declarative configuration files. They ensure standardized structure and reduce errors in GitOps workflows." Thus, the correct answer isC.
References:GitOps Related Practices (CNCF GitOps Working Group).
質問 # 37
In the context of GitOps, what source of truth guides the continuous deployment process?
- A. Dynamic State
- B. Desired State
- C. Current State
- D. Fleeting State
正解：B
解説：
TheDesired State, stored in Git, is the ultimate source of truth in GitOps. It defines how the system should look and behave. Continuous deployment processes reconcile the actual cluster state against this Desired State.
"In GitOps, the desired state kept in Git is the single source of truth. The reconciler ensures the actual state matches the desired state, guiding the continuous deployment process." Thus, the correct answer isA.
References:GitOps Terminology (CNCF GitOps Working Group).
質問 # 38
You want to deploy an application using GitOps. Which of the following steps should be included in the deployment process?
- A. Manually copying the application code to the production server.
- B. Skipping the deployment process and directly running the application code.
- C. Running a script in CI to deploy the application.
- D. Committing the deployment configuration to a Git repository or similar State Store.
正解：D
解説：
In GitOps, deployments are driven bycommitting declarative configurationinto a Git repository (the State Store). From there, agents reconcile the actual environment to match the desired state, making deployments reproducible and auditable.
"To deploy in GitOps, commit the declarative configuration into version control. The reconciler ensures the runtime environment converges to the declared state." Thus, the correct answer isD.
References:GitOps Principles (CNCF GitOps Working Group),Principle 1: Declarative configuration stored in Git.
質問 # 39
You are deploying a new version of your application using the Blue-Green deployment pattern. What is a characteristic of the Blue-Green deployment pattern?
- A. Both the new and old versions of the application are deployed simultaneously.
- B. The new version of the application is deployed first, followed by the old version.
- C. The old version of the application is deployed first, followed by the new version.
- D. The Blue-Green deployment pattern only deploys single versions of the application.
正解：A
解説：
In aBlue-Green deployment, two environments (Blue and Green) exist at the same time. The current version runs in one environment (Blue), and the new version is deployed to the other environment (Green). Traffic is switched to Green once the new version is validated.
"Blue-Green deployments maintain two production environments. The new version is deployed alongside the old version, and once validated, traffic is switched from Blue to Green." Thus, the correct answer isC.
References:GitOps Patterns (CNCF GitOps Working Group), Progressive Delivery.
質問 # 40
When using Kustomize, how are resources, configurations, and customizations commonly organized?
- A. In a single configuration file.
- B. Using a combination of folder directories and referenced folder/file paths.
- C. By specifying all resources inline in the customization file.
- D. In separate configuration files for each resource.
正解：B
解説：
Kustomize is a GitOps tool for managing Kubernetes configurations declaratively. It uses afolder structure with configuration filesand akustomization.yamlfile that references resources and overlays. This enables customization without modifying the base manifests.
"Kustomize allows customization of Kubernetes manifests by organizing resources in directories and referencing them through file paths in a kustomization file. This directory-based approach supports overlays, reusability, and modular configuration." Thus, the correct answer isD.
References:GitOps Tooling (CNCF GitOps Working Group), Kustomize practices.
質問 # 41
In GitOps, what is the process of ensuring the actual state of a system matches its Desired State called?
- A. Reconciliation
- B. Webhooks
- C. Manual Intervention
- D. Monitoring
正解：A
解説：
The process of keeping theactual statein sync with thedesired stateis calledReconciliation. GitOps controllers (e.g., ArgoCD, Flux) continuously reconcile system resources to match what is declared in Git.
"Reconciliation is the process by which agents compare the actual system state to the desired state and automatically make changes to converge them." Thus, the correct answer isA: Reconciliation.
References:GitOps Terminology (CNCF GitOps Working Group).
質問 # 42
What does the GitOps reconciliation loop ensure?
- A. Only applies changes but does not remove resources that used to be part of the Desired State.
- B. When manifests have errors, it will ensure that as much as possible still gets applied.
- C. That the Desired State is instantaneously applied to the system.
- D. The Desired State is applied to the system when the current system state diverges from the Desired State.
正解：D
解説：
The reconciliation loop is a fundamental GitOps principle. It continuously compares thedesired state(stored in Git) with theactual state(running in the system). When a divergence (drift) is detected, the reconciler automatically corrects the system to match the desired state.
"The reconciliation loop ensures the system is continuously converging toward the declared desired state.
Whenever the actual state deviates, the loop reconciles the system to match the desired state." Thus, the correct answer isC.
References:GitOps Principles (CNCF GitOps Working Group).
質問 # 43
Manual updates are common causes of what?
- A. Changes in actual state leading to drift.
- B. Changes in Desired State leading to failure.
- C. Changes in Desired State leading to drift.
- D. Changes in actual state leading to variance.
正解：A
解説：
In GitOps, thedesired stateis stored in Git. Manual updates applied directly to the cluster (via kubectl or APIs) change theactual statewithout updating Git. This introducesdriftbetween actual and desired state.
"Manual changes to the runtime environment cause the actual state to diverge from the desired state stored in Git. This drift must be detected and reconciled automatically." Thus, the correct answer isC.
References:GitOps Principles (CNCF GitOps Working Group), Drift and Reconciliation.
質問 # 44
In GitOps, what does it mean toContinuously Reconcile?
- A. Regularly update Git repositories with the latest changes from external sources.
- B. Perform regular backups of Git repositories.
- C. Monitor the system for any unauthorized changes and revert them.
- D. Automatically compare and adjust the system state as needed.
正解：D
解説：
Continuous reconciliationis another core GitOps principle. It means that software agents (operators or controllers) run loops that continuously observe the live system and compare it against the desired state declared in Git. If any divergence (drift) is found, the agentautomatically reconcilesthe system to match the declared configuration.
"Software agents continuously observe the actual system state and compare it with the desired state declared in Git. If a divergence is detected, the agents automatically reconcile the difference to bring the system back into alignment." This providesautomation, consistency, and self-healing, which are hallmarks of GitOps.
References:GitOps Principles (CNCF GitOps Working Group),Principle 4: Continuously reconciled.
質問 # 45
In the context of GitOps, which of the following is the primary purpose of Desired State?
- A. To store all persistent application data, such as database content.
- B. For monitoring real-time application performance.
- C. To track code changes that developers have made.
- D. To serve as a blueprint to recreate a system for behavioral consistency.
正解：D
解説：
TheDesired Statein GitOps is the declarative specification of how the system should behave. It is stored in Git and serves as the reference point for reconciliation against the actual state.
"The desired state is a complete specification of the system stored in Git. It acts as the blueprint from which the actual state is continuously reconciled, ensuring the system remains consistent and reproducible." Thus, theprimary purpose of Desired Stateis to act as ablueprintto recreate and ensure consistency of the system.
References:GitOps Terminology (CNCF GitOps Working Group).
質問 # 46
Which of these is an advantage of using a declarative configuration for your Desired State?
- A. Declarative configuration helps you include dynamic scripting that guides an application through a step- by-step process.
- B. Declarative configuration lets you specify complex if/else logic within custom code.
- C. Declarative configuration allows you to execute code locally more efficiently to make desired changes to your running system.
- D. Using widely adopted community tools for reconciling actual state is less work than maintaining custom imperative scripts.
正解：D
解説：
Declarative configuration describeswhatthe system should look like, nothowto achieve it. This enables the use ofstandard reconciliation tools(like ArgoCD or Flux) to manage the system automatically, removing the burden of writing and maintaining imperative scripts.
"Declarative configuration enables systems to be managed by generic reconciliation tools rather than bespoke scripts, reducing operational overhead and increasing reliability." Thus, the correct answer isB.
References:GitOps Principles (CNCF GitOps Working Group), Declarative Systems.
質問 # 47
You are working on a GitOps project and want to trigger a reconcile process before the next scheduled reconciliation. What is the recommended way to do this?
- A. Schedule a cron job to run the reconcile process periodically, using RBAC to authenticate.
- B. Use a webhook to trigger the reconcile process based on events or changes in the Git repository.
- C. Manually execute a script to initiate the reconcile process on the cluster using GitOps tool CLI commands.
- D. Adjust the reconcile process interval time.
正解：B
解説：
Although reconciliation is continuous in GitOps, tools often allow reconciliation to be triggered earlier than the normal polling interval. The recommended approach is to usewebhooks from the Git repository, which notify the GitOps controller of changes and trigger an immediate reconcile.
"While reconciliation loops continuously compare desired and actual state, reconciliation can be triggered sooner by webhooks from version control events, ensuring timely application of changes." Thus, the correct answer isA.
References:GitOps Principles (CNCF GitOps Working Group), Reconciliation and Webhooks.
質問 # 48
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