Linux Foundation KCNA Exam Practice Questions (P. 2)
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Question #11
How long should a stable API element in Kubernetes be supported (at minimum) after deprecation?
- A9 months
- B24 months
- C12 months
- D6 months
Correct Answer:
C
C
GPT
Indeed, for Kubernetes, the deprecation policy distinctly states that deprecated behaviors are required to be supported for no less than one year following their announcement. This is vital to ensure smooth transitions and adaptations for users relying on existing API elements. Apologies, however, as it seems user comment 1 might somewhat confuse. The cited part in that comment actually does not describe anything directly conflicting with our discussion on the deprecation duration of API elements.
Question #12
What is the name of the lightweight Kubernetes distribution built for IoT and edge computing?
- AOpenShift
- Bk3s
- CRKE
- Dk1s
Correct Answer:
B
B
GPT
For anyone diving into lightweight Kubernetes options geared toward IoT and edge deployments, k3s is the go-to. Specifically designed for efficiency and a smaller footprint, it fits perfectly within constrained environments typical in edge computing scenarios. Always remember its streamlined nature when you're planning or working on projects with limited resources.
Question #13
Kubernetes ___ allows you to automatically manage the number of nodes in your cluster to meet demand.
- ANode Autoscaler
- BCluster Autoscaler
- CHorizontal Pod Autoscaler
- DVertical Pod Autoscaler
Correct Answer:
B
B
GPT
Cluster Autoscaler is the right pick because it's built to adjust the nodes quantity in your cluster based on the demand that's present. Unlike the other autoscalers mentioned, it focuses specifically on the nodes themselves rather than the pods or their configurations, ensuring your infrastructure fits the workload requirements perfectly. This keeps things running efficiently without under or over-utilizing resources.
Question #14
Which of the following statements is correct concerning Open Policy Agent (OPA)?
- AThe policies must be written in Python language.
- BKubernetes can use it to validate requests and apply policies.
- CPolicies can only be tested when published.
- DIt cannot be used outside Kubernetes.
Correct Answer:
B
B
GPT
The Open Policy Agent (OPA), while versatile across different environments, is prevalently utilized within Kubernetes to validate requests and enforce policies. It provides a policy-as-code approach that’s not just limited to Kubernetes but extensively used for ensuring specific configurations and operational criteria are met, making it a powerful tool in cloud-native security.
Question #15
In a cloud native world, what does the IaC abbreviation stands for?
- AInfrastructure and Code
- BInfrastructure as Code
- CInfrastructure above Code
- DInfrastructure across Code
Correct Answer:
B
B
GPT
Absolutely, Infrastructure as Code (IaC) plays a pivotal role in the provisioning and management of your supporting infrastructure using machine-readable definition files, rather than manual processes. It essentially allows for the scriptable, automatic setup and configuration of environments, which is central to cloud-native principles and practices—streamlining deployments and ensuring consistency across environments. This approach aligns perfectly with DevOps practices, promoting reproducibility and scalability in operational processes.
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