List of Docker interview questions



2. How docker is diff from Virtulization ?

3.What is  meant by Virtulization ?

4.List the advantages and disadvantages of docker?

5.What is  the container and Image?

6.Explain the Docker Container lifecycle ?

7.Does Networking adapters supported by docker?

8.How we can persistent container-data?

9.How we can enter  command or how to we can run command in container?

10.What does  volume parameter do in the docker run command?

11.What is the  difference between the approaches of Docker and standard ? 12.what does it mean by Hypervisor virtualization?

13.List the difference between docker save and docker load commands?

14.What is the default Docker network drivers?

15.What are a Docker container’s possible  states, and what do they mean? 16.How can you change image when running a Docker image?

17.What is a Docker image?

18.What is a Docker image registry?

19.What is container orchestration and why should we use container?

20.What are the features  provided by Docker Enterprise Edition instead of 21.Describe Docker Community Edition?

22.Is there any problem with just using the latest tag in a container  and orchestration environment?

23.What is the  best practice for image tagging?

24.What is Docker Swarm ?

25.which network driver should be used with Docker swarm?

26.Mention the possible ways of using insecure Docker image registrie’s?

27.What is Docker Compose? Where can it be used for?

28.How do you scale the Docker containers?

29.How to build envrionment-agnostic systems with Docker?

30.List the most common instructions in Dockerfile?

31.What type of the application’s – Stateless or Stateful are more suitable for the Docker Container?

32.Explain most basic Docker usage workflow?

33.How will you monitor the Docker in production?

34.What is an orphant volume’s and how to remove it?

35.How is Virtual machine different from a DOCKER?

36.Can you explain in detail Dockerfile ONBUILD instruction?

37.Is it safe practice to run stateful applications on Docker? Mention the scenarios where Docker best fits in?

38.Can you run the Docker containers natively on the Windows?

39.How Docker runs containers in non-Linux systems?

40.How containers works at the low level?

41.Name the possible limitations of containers vs VM?

42.Why does the Docker compose does not wait for a container to be ready? 43.Before moving start next service in dependency order?

44.What are the Differances between the Dockerfile and DockerCompose?

45.Describe important Instructions used in Dockerfile?

46.What are the differences between ADD  and COPY in Dockerfile?

47.What are the differences between  RUN and CMD ,mention  the differences between ENTRYPOINT and CMD?

48.What is difference between  dockerhub and DTR?

49.Disadvantages of using dockerhub?

50.What is  the docker commit command ? How we can we create image from container?

you can prepare for  DOCKER certification