7. Utilize Docker Images in Local Developer Environment 200-901 Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   What is a Docker image?

   • AA compressed archive of all files on the host system
   • BA virtual machine snapshot that includes a full operating system kernel
   • CA read-only template with instructions and filesystem layers used to create containers
   • DA running instance of an application with its own isolated filesystem and network
   Reveal Solution Discussion Select an answer first
2. 12foundation · easy

   What format does 'docker inspect' output by default?

   • AYAML
   • BJSON
   • CPlain text table
   • DXML
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4. 13application · medium

   A developer needs to find the exact environment variables and entrypoint defined in a Docker image before running a container. Which command provides this detailed metadata?

   • Adocker run <image-id> env
   • Bdocker history <image-id>
   • Cdocker inspect <image-id>
   • Ddocker images <image-id>
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which command creates and starts a container from the 'nginx' image?

   • Adocker launch nginx
   • Bdocker run nginx
   • Cdocker start nginx
   • Ddocker create nginx
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6. 15expert · hard

   A developer wants to remove all unused Docker images from the local machine to free up disk space. The developer wants to remove all images that are not associated with any container, including those that are tagged. Which command should be used?

   • Adocker system prune
   • Bdocker image prune
   • Cdocker image prune -a
   • Ddocker rmi $(docker images -q)
   Reveal Solution Discussion Select an answer first