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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Kubernetes Fundamentals | 46% | - Scheduling and Administration
|
| Topic 2: Cloud Native Observability | 8% | - Monitoring & Metrics
|
| Topic 3: Cloud Native Architecture | 16% | - Ecosystem & Landscape
|
| Topic 4: Container Orchestration | 22% | - Orchestration Principles
|
| Topic 5: Cloud Native Application Delivery | 8% | - Deployment Strategies
|
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NEW QUESTION # 148
Which Kubernetes resource workload ensures that all (or some) nodes run a copy of a Pod?
Answer: B
Explanation:
A DaemonSet is the workload controller that ensures a Pod runs on all nodes or on a selected subset of nodes
, so A is correct. DaemonSets are used for node-level agents and infrastructure components that must be present everywhere-examples include log collectors, monitoring agents, storage daemons, CNI components, and node security tools.
The DaemonSet controller watches for node additions/removals. When a new node joins the cluster, Kubernetes automatically schedules a new DaemonSet Pod onto that node (subject to constraints such as node selectors, affinities, and taints/tolerations). When a node is removed, its DaemonSet Pod naturally disappears with it. This creates the "one per node" behavior that differentiates DaemonSets from other workload types.
A Deployment manages a replica count across the cluster, not "one per node." A StatefulSet manages stable identity and ordered operations for stateful replicas; it does not inherently map one Pod to every node. kubectl is a CLI tool and not a workload resource.
DaemonSets can also be scoped: by using node selectors, node affinity, and tolerations, you can ensure Pods run only on GPU nodes, only on Linux nodes, only in certain zones, or only on nodes with a particular label.
That's why the question says "all (or some) nodes."
Therefore, the correct and verified answer is DaemonSet (A).
NEW QUESTION # 149
What is the Kubernetes object used for running a recurring workload?
Answer: D
NEW QUESTION # 150
Why do administrators need a container orchestration tool?
Answer: D
Explanation:
Administrators need container orchestration tools to efficiently manage the deployment, scaling, and lifecycle of large numbers of containers across clusters.
NEW QUESTION # 151
Which option represents best practices when building container images?
Answer: B
Explanation:
Building secure, efficient, and reproducible container images is a core principle of cloud native application delivery. Kubernetes documentation and container security best practices emphasize minimizing image size, reducing attack surface, and ensuring deterministic builds. Option C fully aligns with these principles, making it the correct answer.
Multi-stage builds allow developers to separate the build environment from the runtime environment.
Dependencies such as compilers, build tools, and temporary artifacts are used only in intermediate stages and excluded from the final image. This significantly reduces image size and limits the presence of unnecessary tools that could be exploited at runtime.
Pinning the base image to a specific digest ensures immutability and reproducibility. Tags such as latest can change over time, potentially introducing breaking changes or vulnerabilities without notice. By using a digest, teams guarantee that the same base image is used every time the image is built, which is essential for predictable behavior, security auditing, and reliable rollbacks.
Installing only necessary packages further reduces the attack surface. Every additional package increases the risk of vulnerabilities and expands the maintenance burden. Minimal images are faster to pull, quicker to start, and easier to scan for vulnerabilities. Kubernetes security guidance consistently recommends keeping container images as small and purpose-built as possible.
Option A is incorrect because using the latest tag undermines build determinism and traceability. Option B is incorrect because installing extra packages "just in case" contradicts the principle of minimalism and increases security risk. Option D is incorrect because avoiding multi-stage builds and installing unnecessary packages leads to larger, less secure images and is explicitly discouraged in cloud native best practices.
According to Kubernetes and CNCF security guidance, combining multi-stage builds, immutable image references, and minimal dependencies results in more secure, reliable, and maintainable container images.
Therefore, option C represents the best and fully verified approach when building container images.
NEW QUESTION # 152
In Kubernetes, what is the primary responsibility of the kubelet running on each worker node?
Answer: C
Explanation:
The kubelet is the node-level agent responsible for ensuring that the containers described in Pod specifications are created, running, and kept in a healthy state on each worker node.
NEW QUESTION # 153
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