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| Section | Weight | Objectives |
|---|---|---|
| Cloud Native Observability | 8% | - Monitoring and Metrics
|
| Cloud Native Architecture | 16% | - Architecture Concepts
|
| Container Orchestration | 22% | - Networking
|
| Kubernetes Fundamentals | 46% | - Kubernetes Architecture
|
| Cloud Native Application Delivery | 8% | - Deployment Strategies
|
>> Latest Linux Foundation KCNA Test Question <<
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NEW QUESTION # 261
Which statement about Ingress is correct?
Answer: B
NEW QUESTION # 262
Which of the following capabilities are you allowed to add to a container using the Restricted policy?
Answer: A
Explanation:
Under the Kubernetes Pod Security Standards (PSS), the Restricted profile is the most locked-down baseline intended to reduce container privilege and host attack surface. In that profile, adding Linux capabilities is generally prohibited except for very limited cases. Among the listed capabilities, NET_BIND_SERVICE is the one commonly permitted in restricted-like policies, so D is correct.
NET_BIND_SERVICE allows a process to bind to "privileged" ports below 1024 (like 80/443) without running as root. This aligns with restricted security guidance: applications should run as non-root, but still sometimes need to listen on standard ports. Allowing NET_BIND_SERVICE enables that pattern without granting broad privileges.
The other capabilities listed are more sensitive and typically not allowed in a restricted profile: CHOWN can be used to change file ownership, SETUID relates to privilege changes and can be abused, and SYS_CHROOT is a broader system-level capability associated with filesystem root changes. In hardened Kubernetes environments, these are normally disallowed because they increase the risk of privilege escalation or container breakout paths, especially if combined with other misconfigurations.
A practical note: exact enforcement depends on the cluster's admission configuration (e.g., the built-in Pod Security Admission controller) and any additional policy engines (OPA/Gatekeeper). But the security intent of "Restricted" is consistent: run as non-root, disallow privilege escalation, restrict capabilities, and lock down host access. NET_BIND_SERVICE is a well-known exception used to support common application networking needs while staying non-root.
So, the verified correct choice for an allowed capability in Restricted among these options is D:
NET_BIND_SERVICE.
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NEW QUESTION # 263
What methods can you use to scale a deployment?
Answer: A
NEW QUESTION # 264
In which framework do the developers no longer have to deal with capacity, deployments, scaling and fault tolerance, and OS?
Answer: A
Explanation:
Serverless is the model where developers most directly avoid managing server capacity, OS operations, and much of the deployment/scaling/fault-tolerance mechanics, which is why D is correct. In serverless computing (commonly Function-as-a-Service, FaaS, and managed serverless container platforms), the provider abstracts away the underlying servers. You typically deploy code (functions) or a container image, define triggers (HTTP events, queues, schedules), and the platform automatically provisions the required compute, scales it based on demand, and handles much of the availability and fault tolerance behind the scenes.
It's important to compare this to Kubernetes: Kubernetes does automate scheduling, self-healing, rolling updates, and scaling, but it still requires you (or your platform team) to design and operate cluster capacity, node pools, upgrades, runtime configuration, networking, and baseline reliability controls. Even in managed Kubernetes services, you still choose node sizes, scale policies, and operational configuration. Kubernetes reduces toil, but it does not eliminate infrastructure concerns in the same way serverless does.
Docker Swarm and Mesos are orchestration platforms that schedule workloads, but they also require managing the underlying capacity and OS-level aspects. They are not "no longer have to deal with capacity and OS" frameworks.
From a cloud native viewpoint, serverless is about consuming compute as an on-demand utility. Kubernetes can be a foundation for a serverless experience (for example, with event-driven autoscaling or serverless frameworks), but the pure framework that removes the most operational burden from developers is serverless.
________________________________________
NEW QUESTION # 265
What is the resource type used to package sets of containers for scheduling in a cluster?
Answer: A
Explanation:
The Kubernetes resource used to package one or more containers into a schedulable unit is the Pod, so A is correct. Kubernetes schedules Pods onto nodes; it does not schedule individual containers. A Pod represents a single "instance" of an application component and includes one or more containers that share key runtime properties, including the same network namespace (same IP and port space) and the ability to share volumes.
Pods enable common patterns beyond "one container per Pod." For example, a Pod may include a main application container plus a sidecar container for logging, proxying, or configuration reload. Because these containers share localhost networking and volume mounts, they can coordinate efficiently without requiring external service calls. Kubernetes manages the Pod lifecycle as a unit: the containers in a Pod are started according to container lifecycle rules and are co-located on the same node.
Option B (ContainerSet) is not a standard Kubernetes workload resource. Option C (ReplicaSet) manages a set of Pod replicas, ensuring a desired count is running, but it is not the packaging unit itself. Option D (Deployment) is a higher-level controller that manages ReplicaSets and provides rollout/rollback behavior, again operating on Pods rather than being the container-packaging unit.
From the scheduling perspective, the PodSpec defines container images, commands, resources, volumes, security context, and placement constraints. The scheduler evaluates these constraints and assigns the Pod to a node. This "Pod as the atomic scheduling unit" is fundamental to Kubernetes architecture and explains why Kubernetes-native concepts (Services, selectors, readiness, autoscaling) all revolve around Pods.
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NEW QUESTION # 266
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