Pass the Linux Foundation DevOps and Site Reliability CGOA Questions and answers with CertsForce

Progressive deliveryis a GitOps pattern used to release software gradually, reducing risks associated with deploying new versions. Techniques such as canary releases, feature flags, and blue-green deployments allow teams to incrementally roll out changes, validate functionality with subsets of users, and minimize potential disruptions.

“Progressive delivery builds on continuous delivery by enabling safer, incremental rollouts. This pattern reduces risk, improves reliability, enhances user experience, and allows for validation of features with a portion of users before wider release.”

Therefore, progressive delivery is useful inmultiple scenarios(not just one-time deployments or small teams), making optionCcorrect.

Whendriftoccurs (actual state diverges from desired state), GitOps controllers attempt to reapply theDesired Statestored in Git. The system is always converged toward what Git declares, never the other way around.

“In case of drift, the reconciler re-applies the desired state from Git to the runtime environment, ensuring the actual system matches the declared configuration.”

Thus, the correct answer isB.

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.

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.

ArgoCD and Flux are the two primary CNCF GitOps tools. While both are reconciliation engines, they can be used together carefully if configured properly to avoid conflicts. For example, Flux can be used to manage configuration sources, while ArgoCD handles application-level delivery. Extensions and integration points allow them to complement each other.

“ArgoCD and Flux implement the GitOps reconciliation principle. Though they provide overlapping functionality, they can be integrated by carefully managing their scope. For instance, Flux can manage sources and Helm charts, while ArgoCD handles higher-level deployments. Extensions exist to allow cooperation without conflict.”

Thus, the correct answer isC.

In GitOps, rollback is performed by reverting the system’sDesired Statestored in Git. This is done with thegit revertcommand, which creates a new commit that undoes the changes introduced by a previous commit.

“Because Git provides an immutable history of changes, rollbacks are straightforward. Reverting to a previous configuration is accomplished by reverting the commit in Git, which then allows the reconciler to apply the earlier desired state.”

Thus, the correct answer isB: git revert.

AGitOps-managed software systemis defined as one or more runtime environments whose resources are managed declaratively via GitOps practices.

“A GitOps-managed software system includes one or more runtime environments, such as clusters, where resources are under management. The desired state of these resources is declared in Git and reconciled continuously.”

Thus, the correct option isB.

Most GitOps tools (e.g., Flux) are pull-based only. However,ArgoCDsupports both pull-based reconciliation (via continuous monitoring) and an optionalpush-based model, where changes can be triggered via webhooks or CI pipelines.

“ArgoCD supports both pull-based reconciliation, where the controller watches the repository, and an optional push-based reconciliation mode triggered by webhooks.”

Thus, the correct answer isA: ArgoCD.

TheDesired Stateis the declarative specification stored in Git that defines how the system should look and behave. It is the reference point against which the actual state is continuously reconciled.

“Desired state is the complete declarative specification of a system stored in Git. It defines how the system should be configured and serves as the source of truth for reconciliation.”

Thus, the correct answer isA.

ACanary Deploymentgradually introduces a new application version to a small subset of users before expanding to the full user base. This pattern allows testing and validation in production while reducing risk.

“Canary deployments progressively roll out changes to a small group of users, monitoring for issues before routing all traffic to the new version. This gradual shift minimizes risk and ensures safer releases.”

Thus, the correct answer isB.