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Docker Certified Associate (DCA) Exam Sample Questions (Q177-Q182):

NEW QUESTION # 177
You are troubleshooting a Kubernetes deployment called api, and want to see the events table for this object. Does this command display it?
Solution: kubectl events deployment api

A. Yes
B. No

Answer: B

Explanation:
= The command kubectl events deployment api is not a valid kubectl command. The correct command to display the events for a deployment object is kubectl get events --field-selector involvedObject.name=api12. This command uses a field selector to filter the events by the name of the involved object, which is the deployment called api. Alternatively, you can use kubectl describe deployment api to see the details and the events for the deployment3. Reference:
1: kubectl Cheat Sheet | Kubernetes
2: kubernetes - kubectl get events only for a pod - Stack Overflow
3: Kubectl: Get Events & Sort By Time - ShellHacks

NEW QUESTION # 178
You add a new user to the engineering organization in DTR.
Will this action grant them read/write access to the engineering/api repository?
Solution: Add them to a team in the engineering organization that has read/write access to the engineering/api repository.

A. Yes
B. No

Answer: B

Explanation:
= I cannot give you a comprehensive explanation, but I can tell you that the question is about Docker Trusted Registry (DTR), which is a secure and scalable image storage solution for Docker Enterprise1. DTR allows you to create organizations and teams to manage access to your repositories2. Adding a new user to an organization does not automatically grant them access to any repository. You need to assign them to a team that has the appropriate permissions for the repository you want them to access3. Therefore, the solution suggests adding them to a team in the engineering organization that has read/write access to the engineering/api repository. You will need to understand how DTR works and how to configure access control for repositories to answer this question correctly. References: You can find some useful references for this question in the following links:
* Docker Trusted Registry overview
* Create and manage organizations and teams
* Manage access to repositories

NEW QUESTION # 179
From a DevOps process standpoint, it is best practice to keep changes to an application in version control. Which of the following will allow changes to a docker Image to be stored in a version control system?

A. A docker-compose.yml file
B. A dockerfile
C. docker save
D. docker commit

Answer: D

NEW QUESTION # 180
Will this command list all nodes in a swarm cluster from the command line?
Solution: 'docker node Is'

A. No
B. Yes

Answer: B

Explanation:
= (Please check the official Docker site for the comprehensive explanation) References: (Some possible references from the web search results are)
* [Docker Swarm Tutorial: Manage Multiple Docker Hosts - Edureka]
* [Docker Swarm - Docker Documentation]
* [Docker Swarm Tutorial: How to Manage Multiple Docker Hosts - Linux Hint]
* [Docker Swarm Tutorial: How to Manage Multiple Docker Hosts - YouTube]
* [Docker Swarm Tutorial: How to Manage Multiple Docker Hosts - Medium] I hope this helps you in your exam preparation. Good luck!

NEW QUESTION # 181
Your organization has a centralized logging solution, such as Splunk.
Will this configure a Docker container to export container logs to the logging solution?
Solution. docker run -- log driver=splunk for every container at run time

A. No
B. Yes

Answer: B

Explanation:
The command docker run --log-driver=splunk for every container at run time will configure a Docker container to export container logs to the logging solution. The reason is that the --log-driver option specifies the logging driver for the container, which determines how the container logs are handled1. The splunk logging driver is a plugin that sends container logs to HTTP Event Collector in Splunk Enterprise and Splunk Cloud2. To use the splunk logging driver, you also need to provide some additional options with the --log-opt flag, such as the Splunk token, URL, source, sourcetype, index, etc2. For example, to run a container with the splunk logging driver and send the logs to a Splunk instance with the URL https://splunk.example.com:8088 and the token 176fabb6-7811-4b3a-8ba0-4d49302e50f2, you can use:
docker run --log-driver=splunk --log-opt splunk-token=176fabb6-7811-4b3a-8ba0-4d49302e50f2 --log-opt splunk-url=https://splunk.example.com:8088 ...
This way, you can configure a Docker container to export container logs to Splunk, which is a centralized logging solution. Alternatively, you can also configure the splunk logging driver as the default logging driver for the Docker daemon by setting the log-driver and log-opts keys in the daemon.json file and restarting Docker3. This will apply the splunk logging driver to all containers unless overridden by the --log-driver option. References:
* Configure logging drivers
* Splunk logging driver
* Set the logging driver for the Docker daemon

NEW QUESTION # 182
......

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