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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Container Orchestration | 22% | - Storage
|
| Topic 2: Cloud Native Application Delivery | 8% | - Deployment Strategies
|
| Topic 3: Cloud Native Observability | 8% | - Monitoring and Metrics
|
| Topic 4: Kubernetes Fundamentals | 46% | - Kubernetes API
|
| Topic 5: Cloud Native Architecture | 16% | - Infrastructure and Practices
|
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NEW QUESTION # 284
Which style of operations are preferred for K8S and cloud native applications?
Answer: A
Explanation:
https://kubernetes.io/docs/tasks/manage-kubernetes-objects/declarative-config/#trade-offs
NEW QUESTION # 285
What is the correct method to access an internal service by forwarding a local port to a specific port inside a Pod running in a Kubernetes cluster?
Answer: A
Explanation:
The kubectl port-forward command forwards a local port to a specific port on a Pod or Service, enabling direct access to an internal application running inside the Kubernetes cluster from a local machine.
NEW QUESTION # 286
What is the Kubernetes abstraction that allows groups of Pods to be exposed inside a Kubernetes cluster?
Answer: B
Explanation:
In Kubernetes, Pods are ephemeral by design. They can be created, destroyed, rescheduled, or replaced at any time, and each Pod receives its own IP address. Because of this dynamic nature, directly relying on Pod IPs for communication is unreliable. To solve this problem, Kubernetes provides the Service abstraction, which allows a stable way to expose and access a group of Pods inside (and sometimes outside) the cluster.
A Service defines a logical set of Pods using label selectors and provides a consistent virtual IP address and DNS name for accessing them. Even if individual Pods fail or are replaced, the Service remains stable, and traffic is automatically routed to healthy Pods that match the selector. This makes Services a fundamental building block for internal communication between applications within a Kubernetes cluster.
Deployments (Option A) are responsible for managing the lifecycle of Pods, including scaling, rolling updates, and self-healing. However, Deployments do not provide networking or exposure capabilities. They control how Pods run, not how they are accessed.
Option B, "Daemon," is not a valid Kubernetes resource. The correct resource is a DaemonSet, which ensures that a copy of a Pod runs on each (or selected) node in the cluster. DaemonSets are used for node-level workloads like logging or monitoring agents, not for exposing Pods.
Option C, "Unit," is not a Kubernetes concept at all and does not exist in Kubernetes architecture.
Services can be configured in different ways depending on access requirements, such as ClusterIP for internal access, NodePort or LoadBalancer for external access, and Headless Services for direct Pod discovery.
Regardless of type, the core purpose of a Service is to expose a group of Pods in a stable and reliable way.
Therefore, the correct and verified answer is Option D: Service, which is the Kubernetes abstraction specifically designed to expose groups of Pods within a cluster.
NEW QUESTION # 287
Can a Kubernetes Service expose multiple ports?
Answer: D
Explanation:
Yes, a Kubernetes Service can expose multiple ports, and when it does, each port should have a unique, unambiguous name, making B correct. In the Service spec, the ports field is an array, allowing you to define multiple port mappings (e.g., 80 for HTTP and 443 for HTTPS, or grpc and metrics). Each entry can include port (Service port), targetPort (backend Pod port), and protocol.
The naming requirement becomes important because Kubernetes needs to disambiguate ports, especially when other resources refer to them. For example, an Ingress backend or some proxies/controllers can reference Service ports by name. Also, when multiple ports exist, a name helps humans and automation reliably select the correct port. Kubernetes documentation and common practice recommend naming ports whenever there is more than one, and in several scenarios it's effectively required to avoid ambiguity.
Option A is incorrect because multi-port Services are common and fully supported. Option C is insufficient:
while different port numbers are necessary, naming is the correct distinguishing rule emphasized by Kubernetes patterns and required by some integrations. Option D is incorrect and nonsensical-Services can expose many ports and are not restricted to 443.
Operationally, exposing multiple ports through one Service is useful when a single backend workload provides multiple interfaces (e.g., application traffic and a metrics endpoint). You can keep stable discovery under one DNS name while still differentiating ports. The backend Pods must still listen on the target ports, and selectors determine which Pods are endpoints. The key correctness point for this question is: multi-port Services are allowed, and each port should be uniquely named to avoid confusion and integration issues.
=========
NEW QUESTION # 288
The Kubernetes API provides an interface for storing objects. Which of the following describes the type of objects stored by the Kubernetes API?
Answer: B
Explanation:
Kubernetes objects are RESTful objects.
NEW QUESTION # 289
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