DOWNLOAD the newest PDF4Test DCA PDF dumps from Cloud Storage for free: https://drive.google.com/open?id=1d27DTdc1rtOuvY4zbrS7B2gRUfyabzQZ
PDF4Test Docker DCA exam materials contain the complete unrestricted dump. So with it you can easily pass the exam. PDF4Test Docker DCA exam training materials is a good guidance. It is the best training materials. You can use the questions and answers of PDF4Test Docker DCA Exam Training materials to pass the exam.
| Section | Weight | Objectives |
|---|---|---|
| Orchestration | 25% | - Interpret the output of "docker inspect" commands - Describe how a Dockerized application communicates with legacy systems - Describe and demonstrate how to use replication mode - Complete the setup of a swarm mode cluster - Add networks, publish ports - State the differences between running a container vs running a service - Increase number of replicas - Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy" - Manipulate a running stack of services - Mount volumes - Extend the instructions to run individual containers into running services under swarm - Identify the steps needed to troubleshoot a service not deploying - Describe the difference between global and replicated services - Describe how to deploy containerized workloads as Kubernetes pods and deployments - Demonstrate steps to lock a swarm cluster - Describe how to provide configuration to Kubernetes pods using configMaps and secrets |
| Networking | 15% | - Identify which IP and port a container is externally accessible on - Describe the differences between "host" and "ingress" port publishing mode - Publish a port so that an application is accessible externally - Create a Docker bridge network for a developer to use for their containers - Configure Docker to use external DNS - Understand the Container Network Model and how it interfaces with the Docker engine and network and IPAM drivers - Describe the different types and use cases for the built-in network drivers - Troubleshoot container and engine logs to understand a connectivity issue between containers - Describe how to install a remote driver to a specific infrastructure provider |
| Storage and Volumes | 10% | - Identify the steps to take to clean up unused images on a filesystem and DTR - Describe how to use a volume plugin (local vs. NFS) - Describe the storage models available for DTR (NFS, local) - Describe the use of tmpfs for ephemeral storage - Describe how volumes work with containers - Describe the different graph driver storage backends |
| Installation and Configuration | 15% | - Interpret errors to troubleshoot installation issues without assistance - Describe the interaction between Docker and Linux - Create and manager user and teams - Use the install command to install DTR (Docker Trusted Registry) - Describe namespaces, cgroups, and configuration of certificates - Configure logging drivers (splunk, journald, etc.) - Describe the use of UCP (Universal Control Plane) - Complete setup of repo, select a storage driver, and complete installation of Docker engine on multiple platforms - Outline the sizing requirements prior to installation - Setup swarm, configure managers, add nodes, and setup the backup schedule - Demonstrate the ability to upgrade the Docker engine |
| Image Creation, Management, and Registry | 20% | - Utilize a registry to store an image - Use CLI commands such as list, delete, prune, rmi, etc. to manage images - Describe how an image registry works - Demonstrate tagging an image - Describe the use of Dockerfile - Inspect images and report specific attributes using filter and format - Identify and display the main parts of a Dockerfile - Describe options, such as add, copy, volumes, expose, entry point - Display layers of a Docker image - Describe how image layers work - Apply a file to create a new image - Give examples on how to create an efficient image via a Dockerfile - Describe how to set up and use a local registry |
| Security | 15% | - Compare the UCP workers and managers - Describe the process to sign a Docker image - Describe UCP and DTR integration with LDAP/AD - Describe the difference between UCP and DTR - Describe identity roles - Enable Docker Content Trust - Describe MTLS - Describe the security architecture and responsibilities of the Docker EE platform - Configure RBAC with UCP - Describe default engine security - Describe MTLS and identity roles - Describe swarm default security |
>> DCA Exam Questions And Answers <<
It is very convenient for all people to use the DCA study materials from our company. Our study materials will help a lot of people to solve many problems if they buy our products. The online version of DCA study materials from our company is not limited to any equipment, which means you can apply our study materials to all electronic equipment, including the telephone, computer and so on. So the online version of the DCA Study Materials from our company will be very useful for you to prepare for your exam. We believe that our DCA study materials will be a good choice for you.
NEW QUESTION # 178
The following Docker Compose file is deployed as a stack:
Is this statement correct about this health check definition?
Solution: Health checks test for app health ten seconds apart. Three failed health checks transition the container into "unhealthy" status.
Answer: B
NEW QUESTION # 179
A users attempts to set the system time from inside a Docker container are unsuccessful. Could this be blocking this operation?
Solution: inter-process communication
Answer: B
Explanation:
Explanation
(Please check the official Docker site for the verified answer) Comprehensive Explanation: = (Please check the official Docker site for the comprehensive explanation) References: (Some possible references from the web search results are)
* Docker Security - Docker Documentation
* Docker Security Best Practices - Medium
* Docker Security Cheat Sheet - GitHub
* Docker Security: A Comprehensive Guide - Snyk
* Docker Security: Tips and Tricks to Secure Your Containers - DevSecOps I hope this helps you in your exam preparation. Good luck!
NEW QUESTION # 180
A company's security policy specifies that development and production containers must run on separate nodes in a given Swarm cluster. Can this be used to schedule containers to meet the security policy requirements?
Solution. environment variables
Answer: B
Explanation:
Environment variables cannot be used to schedule containers to meet the security policy requirements. Environment variables are used to pass configuration data to the containers, not to control where they run1. To schedule containers to run on separate nodes in a Swarm cluster, you need to use node labels and service constraints23. Node labels are key-value pairs that you can assign to nodes to organize them into groups4. Service constraints are expressions that you can use to limit the nodes where a service can run based on the node labels. For example, you can label some nodes as env=dev and others as env=prod, and then use the constraint --constraint node.labels.env==dev or --constraint node.labels.env==prod when creating a service to ensure that it runs only on the nodes with the matching label. References:
* 1: Environment variables in Compose | Docker Docs
* 2: Deploy services to a swarm | Docker Docs
* 3: How to use Docker Swarm labels to deploy containers on specific nodes
* 4: Manage nodes in a swarm | Docker Docs
* [5]: Swarm mode routing mesh | Docker Docs
* [6]: Docker Swarm - How to set environment variables for tasks on various nodes
NEW QUESTION # 181
Will this command display a list of volumes for a specific container?
Solution: 'docker container inspect nginx'
Answer: B
NEW QUESTION # 182
Will this command mount the host's '/data* directory to the ubuntu container in read-only mode?
Solution. 'docker run -add-volume /data /mydata -read-only ubuntu'
Answer: B
Explanation:
= The command docker run -add-volume /data /mydata -read-only ubuntu will not mount the host's /data directory to the ubuntu container in read-only mode. The reason is that the command has several syntax errors and invalid options. The correct command to mount a host directory to a container in read-only mode is docker run --mount type=bind,source=/data,target=/mydata,readonly ubuntu12. The command docker run -add-volume /data /mydata -read-only ubuntu has the following problems:
The option -add-volume is not a valid option for docker run. The valid options for mounting a volume or a bind mount are --mount or -v12.
The option -read-only is not a valid option for docker run. The valid option for making the container's root filesystem read-only is --read-only3. However, this option will not affect the mounted volumes or bind mounts, which have their own readonly option12.
The argument /data /mydata is not a valid argument for docker run. The argument for docker run should be the command to run inside the container, such as bash or ping4. The source and target of the volume or bind mount should be specified in the --mount or -v option, separated by a colon12.
Therefore, the command docker run -add-volume /data /mydata -read-only ubuntu will not work as intended, and will likely produce an error message or an unexpected result. Reference:
Use bind mounts
Use volumes
docker run
Docker run reference
NEW QUESTION # 183
......
Even the fierce competition cannot stop demanding needs from exam candidates. To get more specific information about our DCA learning quiz, we are here to satisfy your wish with following details. So you can get detailed information with traits and information about our DCA Real Exam requested on the website. You can free download the demos of our DCA exam questions and click on every detail that you are interested.
Exam Dumps DCA Collection: https://www.pdf4test.com/DCA-dump-torrent.html
BONUS!!! Download part of PDF4Test DCA dumps for free: https://drive.google.com/open?id=1d27DTdc1rtOuvY4zbrS7B2gRUfyabzQZ