Docker Platform Quiz

Questions and Answers

True or false: Docker uses OS-level virtualization to deliver software in packages called containers?

True

True or false: Docker can only run on Linux computers?

False

True or false: Containers in Docker can communicate with each other through well-defined channels?

True (aaaa)

True or false: Docker uses the resource isolation features of the Linux kernel to allow containers to run within a single Linux instance?

True Signup and view all the answers

How do containers in Docker communicate with each other?

Containers in Docker can communicate with each other through well-defined channels. Signup and view all the answers

True or false: Docker was first released in 2013 and is developed by Docker, Inc?

True Signup and view all the answers

Explain the purpose of Docker in software deployment.

Docker is used to automate the deployment of applications in lightweight containers so that applications can work efficiently in different environments in isolation. Signup and view all the answers

What are the resource isolation features of the Linux kernel used by Docker?

Docker uses the resource isolation features of the Linux kernel such as cgroups and kernel namespaces. Signup and view all the answers

What is the purpose of using Docker in a variety of locations?...

Using Docker enables the application to run in a variety of locations, such as on-premises, in public or private cloud. Signup and view all the answers

Where can an application packaged in a Docker container run?

An application packaged in a Docker container can run on any Linux, Windows, or macOS computer. Signup and view all the answers

Containers are isolated from one another and bundle their own ______, libraries and configuration files

software Signup and view all the answers

Docker uses the resource isolation features of the Linux kernel, such as ______ and kernel namespaces

cgroups Signup and view all the answers

Docker can package an application and its dependencies in a virtual container that can run on any Linux, Windows, or ______ computer

macOS Signup and view all the answers

When running on Linux, Docker uses a union-capable file system such as ______ to allow containers to run within a single Linux instance

OverlayFS Signup and view all the answers

Docker is a set of platform as a service (PaaS) products that use OS-level virtualization to deliver software in packages called ______

containers Signup and view all the answers

Study Notes

Docker Overview

Docker uses OS-level virtualization to deliver software in packages called containers.
Docker was first released in 2013 and is developed by Docker, Inc.

Docker Platform

Docker can package an application and its dependencies in a virtual container that can run on any Linux, Windows, or macOS computer.
Docker uses the resource isolation features of the Linux kernel to allow containers to run within a single Linux instance.

Resource Isolation Features

Docker uses the resource isolation features of the Linux kernel, such as cgroups and kernel namespaces.
The resource isolation features allow containers to run within a single Linux instance.

Container Isolation

Containers are isolated from one another and bundle their own operating system, libraries, and configuration files.

Container Communication

Containers in Docker can communicate with each other through well-defined channels.
Containers can communicate with each other, but they are isolated from one another.

Docker File System

When running on Linux, Docker uses a union-capable file system such as AUFS to allow containers to run within a single Linux instance.

Docker Purpose

The purpose of Docker is to simplify software deployment by packaging an application and its dependencies in a virtual container.
Docker allows an application packaged in a Docker container to run anywhere, on any system that supports Docker, without requiring specific setup or configuration.