Kubernetes Interview Questions and Answer Part – 6

Which of the following is correct about Kubernetes Pods?

• Pods can only contain a single VM
• Pods can only contain a single container
• Pods can contain one or more containers (Ans)
• Pods must contain at least two containers

What is the smallest deployable object in Kubernetes?

• Pod (Ans)
• Replication Controller
• Deployment
• Container

How can you filter the output of a kubectl command to only show a Pod called “mypod”

• kubectl get pods –filter mypod
• kubctl get pods/mypod (Ans)
• kubectl get mypod

Which of the following tools is good for installed Kubernetes in the AWS cloud?

• kops (Ans)
• docker-machine
• kubeaws
• kubectl

Which of the following is a best practice for running workloads on a Kubernetes cluster?

• User workloads should only run on Nodes. (Ans)
• User workloads should only run on Masters.
• User workloads should be evenly balanced across Masters and Nodes.

Which of the following Master components are the front-end to the Kubernetes control plane?

• The Controller Manager
• The apiserver (Ans)
• The Cluster Store
• The Scheduler

Which of the following is the only stateful component on a Kubernetes Master?

• The Cluster Store (Ans)
• The Controller Manager
• The Scheduler
• The apiserver

Which of the following is the most common container runtime on Kubernetes Nodes?

• rkt
• Docker (Ans)
• systemd
• Parallels

Which component of the Kubernetes worker stack implements networking?

• Container runtime
• Kubelet
• kube-proxy (Ans)

Which of the following is the preferred method of issuing work to Kubernetes?

• Via manifest files in a declarative fashion (Ans)
• Via individual commands in an imperative fashion

Which of the following best describes a Pod?

• An isolated instance of Linux like aVirtual Machine
• A unikernel
• A Docker container
• A ring-fenced environment (Ans)

Which of the following is the best option for two containers that need to share memory and access to a common volume?

• Put each container in its own Pod and couple them over the network
• Package them as a deployment
• Rewrite the code so that both services run inside a single container
• Put both container sinde the same Pod (Ans)

Which of the following is a major reason for Kubernetes Services?

• K8s Services allow Pods to scale
• Services are highly available
• Services allow for simple rollbacks
• We cannot rely on Pod IPs (Ans)

How are Services linked to Pods?

• TCP port bindings
• Docker Links
• Label Selectors (Ans)

Which of the following best describes the benefits of Kubernetes Deployment objects?

• Declarative formatting, rolling updates, and simple rollback capabilty (Ans)
• They provide High Availability to the Kubernetes control plane
• Imperative formatting, rolling updates, and simple rollback capabilty
• They hugely simplify the deployment and management of Masters and Nodes

Which component of the Kubernetes Master is responsible for issuing work to Nodes?

• The Scheduler (Ans)
• The controller Manager
• The apiserver
• The Cluster Store

Rajesh Kumar

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