Docker MCQ Questions Answers

1. Correct statement for Docker Compose.

2. Swarm currently supports following values?

3. How wll manager nodes handle cluster management tasks? (choose all that apply)

4. A fast way to remove a dangling image is to use the following command:

5. Swarm supports the following backend discovery services?

6. Which statement is True of Docker swarm?

7. Which statement is correct about Service discovery?

8. How can you configure the LDAP integration?

9. Correct statement to describe the contents directory found under the filesystem location shown below. /var/lib/docker

10. Correct statement to describe the Docker Hub in the Docker Workflow.

11. The Docker zfs storage driver makes extensive use of the following ZFS datasets:

12. Which command is used to associate an image with a repository (or multiple repositories) at build time?

13. Choose the correct statement for Automated Builds in the Docker Workflow.

14. Correct statement to describe the Docker File entry below. FROM ubuntu

15. Correct statement to describe Docker.

16. For the following 'docker-compose.yml' fragment scala: build: ./scala expose: - 40000-50000 ports: - 9000:9000 - 4040:4040 links: - mongo volumes: - ../../:/root/cardio - ~/.ivy2:/root/.ivy2 - ~/.sbt:/root/.sbt stdin_open: true Choose the correct statement to describe the 'expose' command as used in the code.

17. How can you create a hashtable with the settings for your container?

18. Correct statement to describe the ENTRYPOINT argument In Dockerfiles.

19. You can use the Docker repository and its __ to create a Docker image, run a Docker container, and develop code in the container?

20. Correct statement for Webhooks in the Docker Workflow.

21. Describe the CMD command for Dockerfiles.

22. Which command is True for applications to run in containers?

23. Correct statement to describe Docker container namespaces.

24. What are the node filters?

25. Which is true? Check all that apply.

26. The is an alpha-numeric string, dots, hyphens, and underscores making up which of the following? Check all that apply.

27. ___ is a portable, lightweight runtime and packaging tool.

28. An external CA is a trusted 3rd party company that provides a means of _____ , and otherwise managing certificates?

29. Difference between the COPY and ADD commands in a Dockerfile.

30. Correct statement to describe Docker 'cgroups'.

31. The dockerd options that support the overlay network are?

32. How can you run services in the background with docker compose?

33. The legacy link provided following major functionalities to the default bridge network?

34. Garbage collection can be run using the following command?

35. The cluster management and orchestration features embedded in the Docker Engine are built using?

36. Which command is used to list services in a swarm?

37. At a high-level, which of the following steps will you use to integrate UCP with DRT?

38. Using the following command to create a new swarm?

39. ___ is a cloud service for sharing applications and automating workflows.

40. Which statement True of Docker Machine?

41. What does the docker swarm command 'swarm join' do?

42. Which is True? In Docker, when a container is exited

43. Swarm agents are responsible for hosting containers. They are regular docker daemons and you can communicate with them using the ___?

44. For the 'docker-compose.yml' fragment below scala: build: ./scala expose: - 40000-50000 ports: - 9000:9000 - 4040:4040 links: - mongo volumes: - ../../:/root/cardio - ~/.ivy2:/root/.ivy2 - ~/.sbt:/root/.sbt stdin_open: true mongo: image: mongo volumes_from: - data ports: - "27017:27017" Choose the most correct statement to describe the 'links' block

45. Docker containers can be

46. Best description of the difference between a Docker container and a Linux process.

47. Multiple containers share the same kernel, but each container can be constrained to only use a defined amount of resources such as _____ , memory and I/O?

48. The default Engine and Swarm ports for TLS are?

49. Can data volume containers be used/mounted in containers residing on other hosts within a docker swarm?

50. Which statement correctly describes a ‘docker.sock’.

51. Correct statement for Docker Swarm

52. Docker is an open platform for developers and __ to build, ship, and run distributed application?

53. In docker, a union file system is the union of ?

54. The default registry is accessible using the command:

55. Docker diff command has 3 events listed in it. They are

56. The Docker client and daemon can communicate via?

57. What are the two major Docker components?

58. How will a server running multiple Docker containers handle the TCP limitation?

59. When using 'systemd' your docker containers start but get shut down instantly. Choose the best explanation for why this may be happening.

60. How Docker's Containers are different to Virtual Machines?

61. Which is true?

62. Docker can be integrated into various infrastructure tools, including?

63. Custom, cross-host container networks are?

64. The container configuration filters are?

65. The 'exec' command in docker is used to

66. Docker Universal Control Plane (UCP) is the enterprise-grade cluster management solution from?

67. Containers on the network ___ DNS mappings for the service via gossip so any container on the network can access the service via its service name?

68. Best describes Docker as a technology innovation.

69. Docker is

70. The command for running a docker container is

71. Scheduling strategies are how Swarm decides which nodes on a cluster to start containers on. Swarm supports the following strategies?

72. For the following 'docker-compose.yml' fragement scala: build: ./scala expose: - 40000-50000 ports: - 9000:9000 - 4040:4040 links: - mongo volumes: - ../../:/root/cardio - ~/.ivy2:/root/.ivy2 - ~/.sbt:/root/.sbt stdin_open: true Choose the most correct statement to describe the ' volumes' command as it appears in the code.

73. Which command is used to show all running containers?

74. The docker compose sub-command 'up' is used to?

75. Can an individual Docker container, for example a web server, that exposes (listens on) a port be started using systemd's socket activation feature?

76. How do links and scaling work together in docker compose?

77. What does the docker management command dockerd do?

78. What format of compose files are supported by docker?

79. What is the command used to convert a container into an image?

80. Best describes the possible security implications of public docker images

81. Which is NOT a valid docker command for images?

82. Which is NOT true?

83. The command to list all currently available images is?

84. In what format are Docker images identified?

85. Signed manifests include an image manifest and a list of signatures generated by libtrust. A signature consists of the following fields?

86. Correct statement to describe the Docker repository

87. Which statement correctly describes a docker image.

88. Choose the correct statement

89. The 'rmi' command in docker is used to?