Creating Containers Using Docker JN0-214 Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   An administrator needs to see a list of all containers, including stopped ones, along with their status and ports. Which command should be used?

   • Adocker inspect
   • Bdocker container list
   • Cdocker ps
   • Ddocker ps -a
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2. 22foundation · easy

   How are Docker images shared and distributed between systems?

   • ABy copying the container's writable layer
   • BBy pushing and pulling from a registry
   • CBy emailing the Dockerfile to other users
   • DBy exporting the running container as a single file
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4. 23foundation · easy

   What is a bind mount in Docker?

   • AA network share accessible by multiple containers
   • BA directory on the host that is mounted into the container
   • CA read-only copy of the image's filesystem
   • DA volume managed by Docker in its own storage area
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5. 24foundation · easy

   In a Docker Compose file, what format is used to define the application's services?

   • ATOML
   • BYAML
   • CJSON
   • DXML
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6. 25application · medium

   A developer is building an image from a Dockerfile that uses multiple RUN instructions. The build fails at the second RUN instruction. The developer fixes the issue and rebuilds. Which statement about the build cache is correct?

   • AThe cache is invalidated because the build context changed.
   • BThe cache is only reused if the --no-cache flag is not used.
   • CThe entire build is re-executed from scratch because the Dockerfile changed.
   • DThe cache from the first RUN instruction is reused, and only the second RUN and subsequent instructions are re-executed.
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