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Home Linux Foundation KCNA

Linux Foundation KCNA Exam Practice Questions (P. 4)

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Question #31
What components are common in a service mesh?
  1. A
    tracing and log storage
  2. B
    circuit breaking and Pod scheduling
  3. C
    data plane and runtime plane
  4. D
    service proxy and control plane

Correct Answer:
D

Question #32
Which storage operator in Kubernetes can help the system to self-scale, self-heal, etc?
  1. A
    Rook
  2. B
    Kubernetes
  3. C
    Helm
  4. D
    Container Storage Interface (CSI)

Correct Answer:
A

Question #33
What fields must exist in any Kubernetes object (e.g. YAML) file?
  1. A
    apiVersion, kind, metadata
  2. B
    kind, namespace, data
  3. C
    apiVersion, metadata, namespace
  4. D
    kind, metadata, data

Correct Answer:
A

Question #34
Which of the following would fall under the responsibilities of an SRE?
  1. A
    Developing a new application feature.
  2. B
    Creating a monitoring baseline for an application.
  3. C
    Submitting a budget for running an application in a cloud.
  4. D
    Writing policy on how to submit a code change.

Correct Answer:
B

Question #35
What are the initial namespaces that Kubernetes starts with?
  1. A
    default, kube-system, kube-public, kube-node-lease
  2. B
    default, system, kube-public
  3. C
    kube-default, kube-system, kube-main, kube-node-lease
  4. D
    kube-default, system, kube-main, kube-primary

Correct Answer:
A

Question #36
What is a probe within Kubernetes?
  1. A
    A monitoring mechanism of the Kubernetes API.
  2. B
    A pre-operational scope issued by the kubectl agent.
  3. C
    A diagnostic performed periodically by the kubelet on a container.
  4. D
    A logging mechanism of the Kubernetes API.

Correct Answer:
C

Question #37
Which Kubernetes feature would you use to guard against split brain scenarios with your distributed application?
  1. A
    Replication controllers
  2. B
    Consensus protocols
  3. C
    Rolling updates
  4. D
    StatefulSet

Correct Answer:
D

Question #38
What feature must a CNI support to control specific traffic flows for workloads running in Kubernetes?
  1. A
    Border Gateway Protocol
  2. B
    IP Address Management
  3. C
    Pod Security Policy
  4. D
    Network Policies

Correct Answer:
D

Question #39
What is the main role of the Kubernetes DNS within a cluster?
  1. A
    Acts as a DNS server for virtual machines that are running outside the cluster.
  2. B
    Provides a DNS as a Service, allowing users to create zones and registries for domains that they own.
  3. C
    Allows Pods running in dual stack to convert IPv6 calls into IPv4 calls.
  4. D
    Provides consistent DNS Names for Pods and Services for workloads that need to communicate with each other.

Correct Answer:
D

Question #40
Scenario: You have a Kubernetes cluster hosted in a public cloud provider. When trying to create a Service of type LoadBalancer, the external-ip is stuck in the "Pending" state. Which Kubernetes component is failing in this scenario?
  1. A
    Cloud Controller Manager
  2. B
    Load Balancer Manager
  3. C
    Cloud Architecture Manager
  4. D
    Cloud Load Balancer Manager

Correct Answer:
A

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