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Free DCA: Docker Certified Associate Exam Questions and Answers
Last updated: January 14, 2025
Examtopics DCA: Docker Certified Associate Prepaway Real Exam Questions and dumps free download
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196-DCA: Docker Certified Associate
#Question
What command allows you to view performance metrics for Docker on a Linux system?
A.docker performance
B.docker info
C.docker stats
D.docker metrics
Correct Answer:
C
The 'docker stats' command provides real-time performance metrics for all running containers.
#Question
How can you stop a Docker service in Swarm mode?
A.docker service remove service_name
B.docker service stop service_name
C.docker service scale service_name=0
D.docker service terminate service_name
Correct Answer:
C
The 'docker service scale service_name=0' command stops all replicas of the specified service in Docker Swarm.
#Question
Which command do you use to join a node to a Docker Swarm?
A.docker swarm join
B.docker node join
C.docker swarm add
D.docker initialize swarm
Correct Answer:
A
The 'docker swarm join' command is used to add a new node to an existing Docker Swarm cluster.
#Question
If a Docker service becomes unhealthy, which command can help you check its status?
A.docker service log service_name
B.docker service status service_name
C.docker service health service_name
D.docker service inspect service_name
Correct Answer:
D
The 'docker service inspect service_name' command allows you to check the health status of a service along with other configuration details.
#Question
How do you run multiple commands in a Docker RUN instruction?
A.Use the && operator
B.Use multi-line comments
C.Use a loop
D.Use semicolons
Correct Answer:
A
The '&&' operator allows multiple commands to execute in sequence within a single RUN instruction.
#Question
Which command is used to stop a running container immediately?
A.docker stop
B.docker shutdown
C.docker kill
D.docker terminate
Correct Answer:
C
The 'docker kill container_name' command stops a running container immediately, not allowing for graceful shutdown.
#Question
To view the history of commits for a specific image, which command would you run?
A.docker logs image_name
B.docker image history image_name
C.docker commit history image_name
D.docker history image_name
Correct Answer:
D
The command 'docker history image_name' shows the commits made to the specified image over time.
196-DCA: Docker Certified Associate
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