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Exam Code: DCA Practice exam 2022 by team
DCA Docker Certified Associate

Exam ID : DCA
Exam Title : Docker Certified Associate
Questions : 55
Duration : 90 minutes
Exam Type : multiple choice

Recognition for your Docker skills with an official Docker credential
Digital certificate and use of the Docker Certified Associate logo
Online verification of Docker Certified status by potential employers
Exclusive access to the Docker Certified professional network on LinkedIn and invites to certified-only events

55 multiple choice questions in 90 minutes
Designed to validate professionals with a minimum of 6 to 12 months of Docker experience
Remotely proctored on your Windows or Mac computer
Available globally in English
Results delivered immediately

This examination is based upon critical job activities a Docker Certified Associate performs. The skills and knowledge certified by this examination represent a level of expertise where a certified Docker Associate can:
● Run containerized applications from pre-existing images stored in a centralized registry
● Deploy images across the cluster
● Triage and resolve issue reports from stakeholders and resolve
● Standup up on Enterprise clusters with one UCP manager, one DTR replica, and one worker node
● Migrate traditional applications to containers
● Configure and troubleshoot Docker engine
● Perform general maintenance and configuration
Candidates for this certification should have at least six months to one year of experience with Docker, including exposure to the Docker Enterprise Edition. The knowledge, skills and experience required at this level should also include:
● container security
● experience with at least one cloud provider
● configuration management tools
● Linux and/or Windows Server

Orchestration 25%
Image Creation, Management, and Registry 20%
Installation and Configuration 15%
Networking 15%
Security 15%
Storage and Volumes 10%

Domain 1: Orchestration (25% of exam)
Content may include the following:
● Complete the setup of a swarm mode cluster, with managers and worker nodes
● Describe and demonstrate how to extend the instructions to run individual containers into running services under swarm.
● Describe the importance of quorum in a swarm cluster.
● Describe the difference between running a container and running a service.
● Interpret the output of “docker inspect” commands.
● Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy"
● Manipulate a running stack of services.
● Describe and demonstrate orchestration activities.
● Increase the number of replicas.
● Add networks, publish ports.
● Mount volumes.
● Describe and demonstrate how to run replicated and global services.
● Apply node labels to demonstrate placement of tasks.
● Describe and demonstrate how to use templates with “docker service create”.
● Identify the steps needed to troubleshoot a service not deploying.
● Describe how a Dockerized application communicates with legacy systems.
● Describe how to deploy containerized workloads as Kubernetes pods and deployments.
● Describe how to provide configuration to Kubernetes pods using configMaps and secrets.

Domain 2: Image Creation, Management, and Registry (20% of exam)
Content may include the following:
● Describe the use of Dockerfile.
● Describe options, such as add, copy, volumes, expose, entry point.
● Identify and display the main parts of a Dockerfile.
● Describe and demonstrate how to create an efficient image via a Dockerfile.
● Describe and demonstrate how to use CLI commands to manage images, such as list, delete, prune, rmi.
● Describe and demonstrate how to inspect images and report specific attributes using filter and format
● Describe and demonstrate how to tag an image.
● Describe and demonstrate how to apply a file to create a Docker image.
● Describe and demonstrate how to display layers of a Docker image
● Describe and demonstrate how to modify an image to a single layer.
● Describe and demonstrate registry functions.
● Deploy a registry.
● Log into a registry.
● Utilize search in a registry.
● Push an image to a registry.
● Sign an image in a registry.
● Pull and delete images from a registry.

Domain 3: Installation and Configuration (15% of exam)
Content may include the following:
● Describe sizing requirements for installation.
● Describe and demonstrate the setup of repo, selection of a storage driver, and installation of the Docker engine on multiple platforms.
● Describe and demonstrate configuration of logging drivers (splunk, journald, etc.).
● Describe and demonstrate how to set up swarm, configure managers, add nodes, and setup the backup schedule.
● Describe and demonstrate how to create and manage user and teams.
● Describe and demonstrate how to configure the Docker daemon to start on boot.
● Describe and demonstrate how to use certificate-based client-server authentication to ensure a Docker daemon has the rights to access images on a registry.
● Describe the use of namespaces, cgroups, and certificate configuration.
● Describe and interpret errors to troubleshoot installation issues without assistance.
● Describe and demonstrate the steps to deploy the Docker engine, UCP, and DTR on AWS and on-premises in an HA configuration. ● Describe and demonstrate how to configure backups for UCP and DTR.

Domain 4: Networking (15% of exam)
Content may include the following:
● Describe 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.
● Describe the types of traffic that flow between the Docker engine, registry and UCP controllers.
● Describe and demonstrate how to create a Docker bridge network for developers to use for their containers.
● Describe and demonstrate how to publish a port so that an application is accessible externally.
● Identify which IP and port a container is externally accessible on.
● Compare and contrast “host” and “ingress” publishing modes.
● Describe and demonstrate how to configure Docker to use external DNS.
● Describe and demonstrate how to use Docker to load balance HTTP/HTTPs traffic to an application (Configure L7 load balancing with Docker EE).
● Understand and describe the types of traffic that flow between the Docker engine, registry, and UCP controllers
● Describe and demonstrate how to deploy a service on a Docker overlay network.
● Describe and demonstrate how to troubleshoot container and engine logs to resolve connectivity issues between containers.
● Describe how to route traffic to Kubernetes pods using ClusterIP and NodePort services.
● Describe the Kubertnetes container network model.

Domain 5: Security (15% of exam)
Content may include the following:
● Describe security administration and tasks.
● Describe the process of signing an image.
● Describe default engine security.
● Describe swarm default security.
● Describe MTLS.
● Describe identity roles.
● Compare and contrast UCP workers and managers.
● Describe the process to use external certificates with UCP and DTR.
● Describe and demonstrate that an image passes a security scan.
● Describe and demonstrate how to enable Docker Content Trust.
● Describe and demonstrate how to configure RBAC with UCP.
● Describe and demonstrate how to integrate UCP with LDAP/AD.
● Describe and demonstrate how to create UCP client bundles.

Domain 6: Storage and Volumes (10% of exam)
Content may include the following:
● Identify the correct graph drivers to uses with various operating systems.
● Describe and demonstrate how to configure devicemapper.
● Compare and contrast object and block storage and when they should be used.
● Describe how an application is composed of layers and where these layers reside on the filesystem.
● Describe the use of volumes are used with Docker for persistent storage.
● Identify the steps to take to clean up unused images on a filesystem and DTR.
● Describe and demonstrate how storage can be used across cluster nodes.
● Describe how to provision persistent storage to a Kubernetes pod using persistentVolumes.
● Describe the relationship between container storage interface drivers, storageClass, persistentVolumeClaim and volume objects in Kubernetes.

Docker Certified Associate
Misc Certified basics
Killexams : Misc Certified basics - BingNews Search results Killexams : Misc Certified basics - BingNews Killexams : Learn to Love the Basics

A blacksmith hammering on a piece of hot iron.

Source: Malcolm Lightbody/Unsplash

“I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.” —Bruce Lee

Where amateurs or beginners are often drawn to the flashiest or most cutting-edge parts of their work, elite professionals consistently work on training their basic skills.

In the kickboxing arena, it’s the competitor who has spent hours upon hours honing her foundational moves that typically holds the advantage over her opponent. It’s the reason master crafters focus on keeping their tools sharp and oiled, why elite performers from music to swimming focus on their warmup, and why programmers make sure the core of their code works before adding bells and whistles.

The problem is, training these basic skills can be boring.

We don’t want boring, we want exceptional. We want the glory of the applause, the thrill of executing a complex guitar solo surrounded by pyrotechnics, the quadruple backflip that no one else can land. Practicing scales or working basic positioning on the mat can seem dull in comparison, even if there’s no way to get to solos or backflips without passing through scales or positioning. During training, it’s too easy to justify skipping these in favor of more advanced techniques.

In the world of emergency medicine, high quality basic skills save lives. They work even when advanced equipment is broken or unavailable, and they work in unexpected and unplanned situations to buy time for a more complete solution to be developed. We need these skills to work well, so we have invested heavily in overcoming friction and learning to train the basics.

So, here are four strategies we use in the ER to successfully train our most basic skill sets that you can put to work, whatever your domain.

1. Train In Situ

One of the core skills we practice routinely in emergency medicine is assembling suction devices. Suction helps us to open up a blocked airway to place a breathing tube in a sick child, or clear blood from a field and find the source of bleeding in a trauma patient. It’s not flashy, but it’s a workhorse and it saves lives.

Almost every time I work with new interns, I ask them if they know how to set up suction devices. When they say yes, we move into an empty trauma room and work together to actually step through the process. A huge majority of those who thought they could put the device together struggle mightily when actually doing so.

Why? Because the details matter. Knowing how something works in theory is not at all the same as being able to actually find where the components are stored and physically connect them.

Working problems in your real environment exposes holes in your understanding of a basic skill and is substantially more engaging than just working a problem on paper.

2. Simulate and Visualize

If you can’t train your basic skills in the exact location you’ll be using them, no problem. Use simulation to mimic the setup as best as possible.

Practice tuning up your instrument in a different concert hall, work through your tennis serves on a local court, or follow our lead from the ER and go to a sim lab designed to help you practice in near-real-life situations. The simple act of physically changing your space often adds challenge and learning to training the basics.

No access to a sim lab or other reasonable model for where you’re going to perform? Still no problem, you’re carrying an amazing sim lab around on your shoulders.

Mental visualization gives you access to unlimited simulation resources. To start, simply close your eyes and imagine yourself performing that basic skill. Pay attention to parts that seem “fuzzy” or out of focus compared to the rest of the visualization, as these often represent areas you need to train more.

Once you’ve mentally worked a basic skill several times over, work on visualizing the process step by step, leaving absolutely nothing out. If you find a step that you can’t expertly visualize—like how, exactly, should you trim a sail if the wind changes a certain way—stop your visualization and go study that piece of the puzzle.

3. Practice Stumble and Recovery Drills

Stumble and recovery drills supply you a chance to practice successfully finishing a basic skill despite an initial setback. Personally, I love these drills, since the more chaos going on around us in an emergency, the more crucial it is we get these skills right.

Stumble and recovery drills work best with a partner who plays the “opposing team.” For example, imagine you’re training to place the pair of cardiac defibrillator (defib) pads correctly—a key basic skill during cardiac arrests that is surprisingly easy to get wrong.

Have your teammate set up a situation where the pads are placed incorrectly, then practice fixing them. Start simply with an easy fix like single pad out of place, then challenge each other with increasingly difficult or complicated situations. Push each other to figure out where those basic skills can improve.

4. Teach and Field Questions

The physicist and educator Dr. Richard Feynman advocated what is now known as “The Feynman Method” of teaching something: Once you feel you have some command of a basic skill, teach it to someone who doesn’t. [1]

When they ask questions, and they will, use these questions they ask to push your understanding. Pay special attention to anywhere you say, “because we just do it that way,” and focus your own training there until you understand it better.

In the ER, we routinely run a variant of this where the highest-level learner (not the teacher) explains a concept to a more junior learner. This setup provides a buffer of experience around both sets of learners and seems to generate even better questions.


Basic skills done well can mark the difference between success and failure—even life and death in some cases. If you want to achieve exceptional heights in your chosen field, you need to find a way to love training them. Your future self will thank you.

Wed, 30 Nov 2022 06:35:00 -0600 en-US text/html
Killexams : The Basics of Estate Planning

Hardly a week goes by without news of a celebrity who died without a will, fracturing families and enriching their attorneys. Maybe you’re smarter than that. You have a will and have named a power of attorney for finances and health care. But unless you regularly update these documents and beneficiary designations, your heirs could still find themselves in a legal morass after you die or paying more than they had to in taxes (we’ll cover that, too). Worse, some of your assets could end up going to a wrongful heir.