DevOps-2 [Containers and K8s]

Which of the following is not a component of Docker Architecture?

• Docker Machine

• Docker Engine

• Docker Runtime

• Docker Registry

• Docker Daemon

You are trying to push an image to Dockerhub however unable to do so. Which would not be a possible reason?

• You are not logged in to Docker. (use "docker login" command)

• Network connectivity between your docker host and docker Hub

• Your image is not correctly tagged as per Docker recommendations

• You do not have an account on Docker Hub

• You should use Docker Swarm or Kubernetes orchestration engines to push images to Docker registry

You need to create a Docker container based on nginx image and need to root prompt of the container. Which command would help you achieve it?

• docker run -it nginx /bin/bash

• docker container run -it nginx

• docker container run -d nginx

• docker container run -itd --name=web nginx

• docker exec -it nginx:latest /bin/bash

Which one of the following is not a command under "image" management commands for Docker?

• build

• pull

• inspect

• pause

• rm

Which of the following Network interface gets created when you install Docker runtime on Docker host?

• Docker1

• Docker0

• eth0

• eth1

Which of the following is not part of Kubernetes Worker nodes?

• Kube Proxy

• Kubelet

• Kube-scheduler

• Container Runtime

Which language is supported for writing Kubernetes object definitions?

• JSON

• Kubernetes DSL

• YAML

• Python

What is kube-apiserver?

• Consistent and highly-available key value store used as Kubernetes' backing store for all cluster data.

• Control plane component that watches for newly created Pods with no assigned node, and selects a node for them to run on.

• Component of the Kubernetes control plane that exposes the Kubernetes API. The API server acts as the front end for the Kubernetes control plane.

• An agent that runs on each node in the cluster. It makes sure that containers are running in a Pod.

Which of the following is not a recommended Dockerfile Directive?

• FROM

• COPY

• MAINTAINER

• LABEL

• EXPOSE

Which of the following is/are valid docker commands which will bind ports on container to the ports on the host on which it is running?

• docker container run -P <imagename>

• docker container run -P 8080:80 <imagename>

• docker container run -p <imagename>

• docker container run -p 8080:80 <imagename>