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Home Linux Foundation KCNA

Linux Foundation KCNA Exam Practice Questions (P. 3)

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Question #21
How to load and generate data required before the Pod startup?
  1. A
    Use an init container with shared file storage.
  2. B
    Use a PVC volume.
  3. C
    Use a sidecar container with shared volume.
  4. D
    Use another pod with a PVC.

Correct Answer:
A

Question #22
What is the core functionality of GitOps tools like Argo CD and Flux?
  1. A
    They track production changes made by a human in a Git repository and generate a human-readable audit trail.
  2. B
    They replace human operations with an agent that tracks Git commands.
  3. C
    They automatically create pull requests when dependencies are outdated.
  4. D
    They continuously compare the desired state in Git with the actual production state and notify or act upon differences.

Correct Answer:
D

Question #23
Which Kubernetes resource workload ensures that all (or some) nodes run a copy of a Pod?
  1. A
    ReplicaSet
  2. B
    StatefulSet
  3. C
    DaemonSet
  4. D
    Deployment

Correct Answer:
C

Question #24
We can extend the Kubernetes API with Kubernetes API Aggregation Layer and CRDs. What is CRD?
  1. A
    Custom Resource Definition
  2. B
    Custom Restricted Definition
  3. C
    Customized RUST Definition
  4. D
    Custom RUST Definition

Correct Answer:
A

Question #25
The Kubernetes project work is carried primarily by SIGs. What does SIG stand for?
  1. A
    Special Interest Group
  2. B
    Software Installation Guide
  3. C
    Support and Information Group
  4. D
    Strategy Implementation Group

Correct Answer:
A

Question #26
What is the order of 4C’s in Cloud Native Security, starting with the layer that a user has the most control over?
  1. A
    Cloud -> Container -> Cluster -> Code
  2. B
    Container -> Cluster -> Code -> Cloud
  3. C
    Cluster -> Container -> Code -> Cloud
  4. D
    Code -> Container -> Cluster -> Cloud

Correct Answer:
D

Question #27
Which group of container runtimes provides additional sandboxed isolation and elevated security?
  1. A
    rune, cgroups
  2. B
    docker, containerd
  3. C
    runsc, kata
  4. D
    crun, cri-o

Correct Answer:
C

Question #28
What is the common standard for Service Meshes?
  1. A
    Service Mesh Specification (SMS)
  2. B
    Service Mesh Technology (SMT)
  3. C
    Service Mesh Interface (SMI)
  4. D
    Service Mesh Function (SMF)

Correct Answer:
C

Question #29
Which statement about Ingress is correct?
  1. A
    Ingress provides a simple way to track network endpoints within a cluster.
  2. B
    Ingress is a Service type like NodePort and ClusterIP.
  3. C
    Ingress is a construct that allows you to specify how a Pod is allowed to communicate.
  4. D
    Ingress exposes routes from outside the cluster to services in the cluster.

Correct Answer:
D

Question #30
What best describes cloud native service discovery?
  1. A
    It's a mechanism for applications and microservices to locate each other on a network.
  2. B
    It's a procedure for discovering a MAC address, associated with a given IP address.
  3. C
    It's used for automatically assigning IP addresses to devices connected to the network.
  4. D
    It's a protocol that turns human-readable domain names into IP addresses on the Internet.

Correct Answer:
A

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