Containers Quiz - Module 15

Why would you want to mount a directory to your Docker container A: Because containers do not save data after they are deleted. B: To improve disk IO performance. C: So that the container can create directories. D: So that your container can access the Internet using the host's network sockets.

A: Because containers do not save data after they are deleted.

Which of these statements is least true about the difference between containers and virtual machines? A: Containers are just smaller virtual machines B: Virtual machines emulate actual hardware. Containers emulate operating systems. C: Containers do not translate hardware instructions D: Containers can only run one app at a time

A: Containers are just smaller virtual machines

Which of these problems does Kind aim to solve best? A: Creating local Kubernetes clusters easily within Docker. B: Creating bare-metal Kubernetes clusters easily. C: Creating production-ready Kubernetes clusters more easily within cloud providers. D: None of these

A: Creating local Kubernetes clusters easily within Docker.

What assumption is at the foundation of cloud native technology? A: It is good to remove silos between ops teams and software development teams. B: Cloud native projects should provide isolated solutions with less cross-integration. C: Software should be released in slow cycles to enable proper testing.

A: It is good to remove silos between ops teams and software development teams.

What are some common problems with using Docker Machine to run Docker? A: Slow disk performance when using volume mounts B: Users need to know how to use and manage Virtualbox for common tasks. C: Slow network performance while using exposed ports D: All of the above

D: All of the above

Select the least true statement about Docker from the list: A: Anyone can pull from the Docker Hub without an account. B: By default, Docker images will receive a latest version tag if a version tag is not provided. C: Docker Hub is the default container registry used by the Docker client. D: Anyone can push to Docker Hub. You do not need to register an account.

D: Anyone can push to Docker Hub. You do not need to register an account.

Which AWS resource runs your Kubernetes worker nodes? A: IAM B: Lambda C: VPC D: EC2

D: EC2

Which statement is true regarding Kubernetes? A: It is maintained by Google. B: It is written in Java or C++. C: It originates in a Facebook system called Go. D: It is an open-source project.

D: It is an open-source project.

Which of the following is NOT generally included in a container? A: application runtime B: application libraries C: environment variables and config files D: application code E: user credentials

E: user credentials

Docker is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications. T/F

False

Docker was created to run on platforms with the Linux OS, but software exists that will allow you run on Windows and Mac OS. T/F

True

Kubernetes groups containers that make up an application into logical units for easy management and discovery T/F

True

Which of the following is considered to be a benefit of containers? (Select all that apply) A: consistency and portability B: easier debugging and maintenance C: increased complexity D: microservices architecture E: versioning and rollback

A: consistency and portability B: easier debugging and maintenance D: microservices architecture E: versioning and rollback

Which of these problems does Docker Compose NOT solve? A: Uses a manifest file to declare your application's dependencies and run them in a local Docker network. B: Autoscaling containers and transparently moving them from machine to machine. C: Simplifies local development by allowing you to run multiple containers at once. D: Prevents you from having to run multiple docker CLI commands to start multiple containers.

B: Autoscaling containers and transparently moving them from machine to machine.