IBM CC0201EN Introduction to Containers, Kubernetes, and OpenShift - Graded Quiz answer - 1

                                         IBM CC0201EN 

Introduction to Containers, Kubernetes, and OpenShift - Graded Quiz answer - 1

Question 1

1 point possible (graded)

Which of the following are benefits of containers?

Each container is fully isolated and therefore secure.

Like virtual machines (VMs), containers virtualize your infrastructure.

Containers provide a standardized way to package and ship software.

Each container runs its own operating system (OS).

unanswered

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Question 2

1 point possible (graded)

What is an image?

A read-only file that contains the source code, libraries, and dependencies that are needed to run an application.

A text file that contains the commands and settings that will run a container and the apps running in that container.

An isolated process running on a local or remote host with its own file system and networking.

A YAML file with key/value pairs specifying the attributes of a container.

unanswered

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Question 3

1 point possible (graded)

In this sample Dockerfile, what does the FROM instruction do?

FROM ubuntu:18.04

COPY . /app

RUN make /app

CMD python /app/app.py

It defines the operating system on which the docker build command must be run.

It defines the virtualized host operating system on which the container will run.

It defines the minimum version of the operating system for the docker build command to use.

It defines the base image, which in this case is Ubuntu version 18.04.

unanswered

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Question 4

1 point possible (graded)

What does the docker build command do?

It uses an image to create a container.

It uses a Dockerfile to create an image.

It creates a Dockerfile.

It creates a Docker app.

unanswered

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Question 5

1 point possible (graded)

You can use the Docker COPY instruction to copy files from your local machine to a container.

True

            False 

Question 1

1/1 point (graded)

Which of the following statements describes what Kubernetes is?

Open source software.

Container orchestration platform.

Widely available.

A tool that facilitates declarative management.

All of the above.

correct

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Correct (1/1 point)

Question 2

1/1 point (graded)

Which of the following components is part of the Kubernetes control plane?

The kubelet

The worker nodes.

The Kubernetes network proxy.

etcd

correct

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Question 3

1/1 point (graded)

Which of the following are Kubernetes objects? Select all that apply.

Namespaces

ConfigMaps

Kubelets

Clusters

correct

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Question 4

1/1 point (graded)

Which Kubernetes object represents a single instance of processes running in a container?

Deployment

Kubelet

Cluster

Pod

ReplicaSet

correct

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Question 5

1/1 point (graded)

In this sample kubectl command, what does create do?

kubectl create -f nginx.yaml

It creates a YAML file named nginx.yaml.

It creates an object using the details in the nginx.yaml file.

It creates a new cluster using the details in the nginx.yaml file.

It creates a configuration file for an nginx web server.

correct

Question 1

1/1 point (graded)

Which of the following statements describes what a ReplicaSet does? Select the four that apply.

Maintains a stable set of Pods in a cluster, spinning up or deleting pods as needed.

Provides configuration details to Deployments.

Rolls out app changes in an automated and controlled manner.

Replicates a Deployment.

Autoscales an application.

correct

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Question 2

1/1 point (graded)

Which of the following Kubernetes objects are used to run applications? Select the four that apply.

ReplicaSets

ConfigMaps

Secrets

Service bindings

ibmcloud CLI

correct

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Question 3

1/1 point (graded)

In this sample kubectl command, what does get deployments tell us? Select the four that apply.

» kubectl get deployments

NAME	READY	UP-TO-DATE	AVAILABLE	AGE
Nginx-deploy	1/3	1	1
3s

How many replicas of the application are ready.

The number of replicas that have been updated to the desired state.

How many replicas of the application are available.

How long the application has been running.

The Kubernetes namespace in which the Deployments live.

correct

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Question 4

1/1 point (graded)

Which of the following Kubernetes objects is used to store and manage sensitive information?

Service bindings

ConfigMaps

Secrets

ReplicaSets

correct

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Question 1

1/1 point (graded)

Which of the following most accurately describes the relationship between Red Hat OpenShift and Kubernetes?

OpenShift packages Kubernetes with additional tooling to make developers and administrators more successful.

OpenShift is a tool in the Kubernetes that ecosystem that can be used in conjunction with Kubernetes to deploy cloud-native applications.

OpenShift can be deployed on a Kubernetes cluster to provide additional tooling such as logging, monitoring, and CI/CD.

OpenShift plugs into Kubernetes through custom resource definitions to provide build and other capabilities.

correc

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Question 2

1/1 point (graded)

Which of the following are Red Hat OpenShift build triggers? Select the three that apply.

Webhook

Image change

Configuration change

Source-to-image

Docker build

correct

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Question 3

1/1 point (graded)

Which of the following are possible with Istio service mesh? Select the three that apply.

Routing traffic to two versions of a microservice.

Setting policies that stipulate which services can talk to each other.

Encrypting traffic between services.

Creating protocols for service to service communication.

Decouple applications into smaller, loosely coupled microservices.

correct

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Question 4

1/1 point (graded)

Which of the following are types of operators available in OperatorHub? Select the three that apply.

Red Hat

Certified

Community

Custom controller

CRD

correc

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Final Exam due Aug 26, 2022 04:46 IST

Question 1

1/1 point (graded)

What does the Docker CLI build command do?

It builds an image from a Dockerfile.

It builds a microservice that will run in an image.

It builds a Dockerfile.

It builds a new container.

It builds a new cluster.

correct

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Question 2

1/1 point (graded)

In this sample Dockerfile, what does the FROM instruction do?

FROM alpine:3.9

COPY . /app

RUN make /app

CMD python /app/app.py

It defines the base image, which in this case is Alpine version 3.9.

It defines the virtualized host operating system on which the container will run.

It defines the minimum version of the operating system for the docker build command to use.

It defines the operating system on which the docker build command must be run.

correct

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Question 3

0/1 point (graded)

Containers include a guest operating system in every instance.

True

False

incorrect

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Incorrect (0/1 point)

Question 4

1/1 point (graded)

In this sample docker build command, what does the -t option do?

docker build -t my-app:v1 .

It gives the image the name “my-app” and the tag “v1”.

It indicates that the files used to build the image are located in the current working directory.

It indicates that the version “v1” of “my-app” should be used when building the image.

It tags the current working directory as the target location for the image being built.

correct

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Question 5

1/1 point (graded)

You use the docker push command to distribute an image to a registry.

True

False

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Question 6

1/1 point (graded)

Which of the following statements describes what Kubernetes is? Select all that apply.

An all-inclusive platform as a service (PaaS).

A service for building source code.

A continuous delivery pipeline.

A solution for sharing and storing images.

A container orchestration platform.

correct

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Question 7

1/1 point (graded)

Which of the following are container runtimes? Select all that apply.

Docker

Rocket Ship

CRI-O

DRunner

Kubelet

correct

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Question 8

1/1 point (graded)

Which of the following Kubernetes objects can you use to segregate a cluster by team or project?

Namespaces

ConfigMaps

Kubernetes controllers

Volumes

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Question 9

1/1 point (graded)

Which Kubernetes object provides updates to Pods and ReplicaSets?

Deployment

ConfigMap

Secret

Patch

correct

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Question 10

1/1 point (graded)

In this sample kubectl command, what does create do?

kubectl create -f pod.json

It creates a JSON file named pod.json.

It creates an object using the details in the pod.json file.

It creates a new cluster using the details in the pod.json file.

It creates a file that contains the configuration for a Kubernetes Pod.

correct

Question 11

1/1 point (graded)

How are ReplicaSets often created?

One is automatically created for you when you create a Ddeployment.

Using the kubectl create replicaset command.

By adding a ReplicaSet: on flag to the deployment’s configuration file.

By Adding a ReplicaSet: on flag to the Dockerfile used to build the container image.

correct

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Question 12

1/1 point (graded)

Which of the following Kubernetes objects are used to run applications? Select all that apply.

Plugins

ConfigMaps

ResourceSets

Service bindings

Deployments

correct

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Question 13

1/1 point (graded)

Which of the following are used to provide ConfigMaps to Pods and Deployments? Select all that apply.

String literals

YAML configuration files

Container runtimes

Service bindings

Kubernetes schedulers

correct

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Question 14

1/1 point (graded)

What Kubernetes capabilities enable an application to increase the number of Pods based on traffic? Select all that apply.

Service binding

Horizontal Pod Autoscaler

kubectl autoscale command

Kubernetes traffic router

kubectl scale command

correct

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Question 15

1/1 point (graded)

What does the following command do?

kubectl get secrets --namespace=default

Retrieves the secrets in the “default” namespace.

Retrieves the IBM Cloud IAM API key for your Kubernetes cluster.

Retrieves the binding.password values for the services bound to your Kubernetes cluster.

Retrieves all the Secrets in your Kubernetes cluster.

correct

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Question 16

1/1 point (graded)

What is the Istio service mesh used for? Select all that apply.

Control the flow of traffic between services.

Secure communication between services.

Encrypt Kubernetes secrets.

Observe and monitor services.

correct

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Question 17

1/1 point (graded)

Kubernetes is the sole project hosted by the CNCF.

True

False

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Question 18

0/1 point (graded)

OpenShift can be run in which of the following environments? Select all that apply.

On premise

Public cloud

Private cloud

Hybrid cloud

incorrect

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Incorrect (0/1 point)

Question 19

1/1 point (graded)

What is the open source upstream version of OpenShift called?

OKD

Kubernetes open source

Istio

CRD

Red Hat Enterprise Linux CoreOS

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Question 20

1/1 point (graded)

Which of the following build strategies injects application source code into builder images without having to write a Dockerfile?

Docker

Source-to-image

Custom build

Image stream

Webhook

correct

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Question 21

1/1 point (graded)

Image streams contain complete image data.

True

False

correct

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END OF FINAL EXAM

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