QuizApi - Basic Dockerfile Quiz

Question 1

Correct Answers: 1/4

What is the purpose of the `FROM` instruction in a Dockerfile?

It sets the working directory

It defines environment variables

It sets the base image for the container

It installs packages

Question 2

Correct Answers: 1/4

What is the function of the `RUN` instruction in a Dockerfile?

To set a working directory

To install or configure applications in the image build process

To run a command in the container after it starts

To define environment variables

Question 3

Correct Answers: 1/4

Which Dockerfile instruction specifies the default command to run when a container starts?

FROM

CMD

ENTRYPOINT

RUN

Question 4

Correct Answers: 1/4

What is the purpose of the `WORKDIR` instruction in a Dockerfile?

To define a base image

To set the directory from which all subsequent commands run

To install applications

To set environment variables

Question 5

Correct Answers: 1/4

Which instruction in a Dockerfile copies files from the host into the image?

FROM

ADD

RUN

COPY

Question 6

Correct Answers: 1/4

What is the difference between `COPY` and `ADD` in a Dockerfile?

There is no difference

`COPY` is deprecated

`ADD` can also extract compressed files, while `COPY` only copies files

`ADD` is faster than `COPY`

Question 7

Correct Answers: 1/4

Which instruction in a Dockerfile defines environment variables?

RUN

ENTRYPOINT

CMD

ENV

Question 8

Correct Answers: 1/4

What is the purpose of the `EXPOSE` instruction in a Dockerfile?

It opens the container to all network traffic

It makes the port accessible on the internet

It starts a port listener

It informs Docker that the container will listen on a specific port

Question 9

Correct Answers: 1/4

Which instruction in a Dockerfile can be used to specify a default executable that always runs in the container?

FROM

ENTRYPOINT

CMD

RUN

Question 10

Correct Answers: 1/4

What is the correct syntax for using the `COPY` instruction in a Dockerfile?

COPY src dest

COPY = source, destination

COPY source destination

COPY: source -> destination

Question 1

What is the purpose of the `FROM` instruction in a Dockerfile?

Question 2

What is the function of the `RUN` instruction in a Dockerfile?

Question 3

Which Dockerfile instruction specifies the default command to run when a container starts?

Question 4

What is the purpose of the `WORKDIR` instruction in a Dockerfile?

Question 5

Which instruction in a Dockerfile copies files from the host into the image?

Question 6

What is the difference between `COPY` and `ADD` in a Dockerfile?

Question 7

Which instruction in a Dockerfile defines environment variables?

Question 8

What is the purpose of the `EXPOSE` instruction in a Dockerfile?

Question 9

Which instruction in a Dockerfile can be used to specify a default executable that always runs in the container?

Question 10

What is the correct syntax for using the `COPY` instruction in a Dockerfile?

Finish Quiz