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| Section | Objectives |
|---|---|
| Kubernetes Fundamentals | - Core Kubernetes concepts
|
| Cloud Native Architecture | - Microservices and distributed systems
|
| Cloud Native Application Delivery | - CI/CD and deployment strategies
|
| Cloud Native Observability | - Monitoring and logging
|
| Container Orchestration | - Container lifecycle and scheduling
|
| Cloud Security and Governance | - Security fundamentals in cloud native systems
|
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NEW QUESTION # 196
How do you deploy a workload to Kubernetes without additional tools?
Answer: A
NEW QUESTION # 197
Which of these components is part of the Kubernetes Control Plane?
Answer: D
Explanation:
The Kubernetes control plane is the set of components responsible for making cluster-wide decisions (like scheduling) and detecting and responding to cluster events (like starting new Pods when they fail). In upstream Kubernetes architecture, the canonical control plane components include kube-apiserver, etcd, kube-scheduler, and kube-controller-manager, and-when running on a cloud provider-the cloud- controller-manager. That makes option B the correct answer: cloud-controller-manager is explicitly a control plane component that integrates Kubernetes with the underlying cloud.
The cloud-controller-manager runs controllers that talk to cloud APIs for infrastructure concerns such as node lifecycle, routes, and load balancers. For example, when you create a Service of type LoadBalancer, a controller in this component is responsible for provisioning a cloud load balancer and updating the Service status. This is clearly control-plane behavior: reconciling desired state into real infrastructure state.
Why the others are not control plane components (in the classic classification): kubelet is a node component (agent) responsible for running and managing Pods on a specific node. kube-proxy is also a node component that implements Service networking rules on nodes. CoreDNS is usually deployed as a cluster add-on for DNS-based service discovery; it's critical, but it's not a control plane component in the strict architectural list.
So, while many clusters run CoreDNS in kube-system, the Kubernetes component that is definitively "part of the control plane" among these choices is cloud-controller-manager (B).
=========
NEW QUESTION # 198
Which of the following common practices will be an antipattern when the GitOps workflow goes live?
Answer: B
Explanation:
GitOps relies on declarative configuration stored in version control as the single source of truth.
Using imperative commands bypasses this model and introduces configuration drift, which contradicts GitOps principles.
NEW QUESTION # 199
Kubernetes Secrets are specifically intended to hold confidential data. Which API object should be used to hold non-confidential data?
Answer: C
Explanation:
In Kubernetes, different API objects are designed for different categories of configuration and operational data. Secrets are used to store sensitive information such as passwords, API tokens, and encryption keys. For data that is not confidential, Kubernetes provides the ConfigMap resource, making option C the correct answer.
ConfigMaps are intended to hold non-sensitive configuration data that applications need at runtime.
Examples include application configuration files, feature flags, environment-specific settings, URLs, port numbers, and command-line arguments. ConfigMaps allow developers to decouple configuration from application code, which aligns with cloud-native and twelve-factor app principles. This separation makes applications more portable, easier to manage, and simpler to update without rebuilding container images.
ConfigMaps can be consumed by Pods in several ways: as environment variables, as command-line arguments, or as files mounted into a container's filesystem. Because they are not designed for confidential data, ConfigMaps store values in plaintext and do not provide encryption by default. This is why sensitive data must always be stored in Secrets instead.
Option A, CNI (Container Network Interface), is a networking specification used to configure Pod networking and is unrelated to data storage. Option B, CSI (Container Storage Interface), is used for integrating external storage systems with Kubernetes and does not store configuration data. Option D, RBAC, defines authorization policies and access controls within the cluster and is not a data storage mechanism.
While both Secrets and ConfigMaps can technically be accessed in similar ways by Pods, Kubernetes clearly distinguishes their intended use cases based on data sensitivity. Using ConfigMaps for non-confidential data improves clarity, security posture, and maintainability of Kubernetes configurations.
Therefore, the correct and verified answer is Option C: ConfigMaps, which are explicitly designed to hold non-confidential configuration data in Kubernetes.
NEW QUESTION # 200
Which Kubernetes-native deployment strategy supports zero-downtime updates of a workload?
Answer: C
Explanation:
D (RollingUpdate) is correct. In Kubernetes, the Deployment resource's default update strategy is RollingUpdate, which replaces Pods gradually rather than all at once. This supports zero-downtime updates when the workload is properly configured (sufficient replicas, correct readiness probes, and appropriate maxUnavailable / maxSurge settings). As new Pods come up and become Ready, old Pods are terminated in a controlled way, keeping the service available throughout the rollout.
RollingUpdate's "zero downtime" is achieved by maintaining capacity while transitioning between versions. For example, with multiple replicas, Kubernetes can create new Pods, wait for readiness, then scale down old Pods, ensuring traffic continues to flow to healthy instances. Readiness probes are critical: they prevent traffic from being routed to a Pod until it's actually ready to serve.
Why other options are not the Kubernetes-native "strategy" answer here:
Recreate (B) explicitly stops old Pods before starting new ones, causing downtime for most services.
Canary (A) and BlueGreen (C) are real deployment patterns, but in "Kubernetes-native deployment strategy" terms, the built-in Deployment strategies are RollingUpdate and Recreate. Canary/BlueGreen typically require additional tooling/controllers (service mesh, ingress controller features, or progressive delivery operators) to manage traffic shifting between versions.
So, for a Kubernetes-native strategy that supports zero-downtime updates, the correct and verified choice is RollingUpdate (D).
NEW QUESTION # 201
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