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Docker DCA Exam Syllabus Topics:

Topic	Details
Topic 1	Triage Issue Reports from Stakeholders and Resolve
Topic 2	Run Containerized Applications from Pre-Existing Images Stored in a Centralized Registry
Topic 3	Migrate Traditional Applications to Containers

The DCA certification exam is designed for IT professionals, developers, and system administrators who work with Docker. Candidates who pass the exam demonstrate their ability to use Docker to build, ship, and run applications in containers. DCA Exam covers a range of topics, including Docker basics, Dockerfile and image creation, container orchestration with Docker Swarm, and Docker networking and security.

The DCA exam is designed for professionals who are involved in software development, IT operations, and DevOps. DCA exam covers a wide range of topics, including Docker architecture, Docker installation and configuration, Docker networking, Docker security, Docker images and containers, Docker orchestration, and Docker storage. Candidates who pass the DCA exam are able to demonstrate their proficiency in all these areas.

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Docker Certified Associate (DCA) Exam Sample Questions (Q172-Q177):

NEW QUESTION # 172
Is this a function of UCP?
Solution: scans images to detect any security vulnerability

A. No
B. Yes

Answer: B

Explanation:
Explanation
= Scanning images to detect any security vulnerability is a function of UCP. UCP integrates with Docker Trusted Registry (DTR), which is a secure and scalable image storage solution1. DTR has a built-in image scanning feature that checks every layer of every image for known vulnerabilities and displays the results in the UCP web UI2. This helps users to identify and fix any security issues before deploying their applications. UCP also allows users to enforce security policies and only allow running applications that use images that are scanned and free of vulnerabilities3. References:
* Docker Trusted Registry | Docker Docs
* Scan images for vulnerabilities | Docker Docs
* Manage images | Docker Docs

NEW QUESTION # 173
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 the user directly to the list of users with read/write access under the repository's Permissions tab.

A. No
B. Yes

Answer: B

NEW QUESTION # 174
You want to create a container that is reachable from its host's network.
Does this action accomplish this?
Solution.Use either EXPOSE or -publish to access the container on the bridge network.

A. Yes
B. No

Answer: B

Explanation:
Using either EXPOSE or -publish to access the container on the bridge network will not accomplish the goal of creating a container that is reachable from its host's network. EXPOSE is a way of documenting which ports a container listens on, but it does not open any ports to the host1. -publish (or -p) is a way of mapping a host port to a container port, but it does not change the network mode of the container2. By default, Docker containers use the bridge network, which isolates them from the host network3. To create a container that is reachable from its host's network, you need to usethe --network host option when running the container4. This will make the container share the host's network stack and have the same IP address as the host4. Reference:
1: Difference Between "expose" and "publish" in Docker | Baeldung on Ops
2: Deploy services to a swarm | Docker Docs
3: Bridge network | Docker Docs
4: Host network | Docker Docs

NEW QUESTION # 175
Will this command ensure that overlay traffic between service tasks is encrypted?
Solution: docker network create -d overlay -o encrypted=true <network-name>

A. No
B. Yes

Answer: B

Explanation:
The command docker network create -d overlay -o encrypted=true <network-name> will ensure that overlay traffic between service tasks is encrypted. This command creates an overlay network with the encryption option enabled, which means that Docker will create IPSEC tunnels between all the nodes where tasks are scheduled for services attached to the overlay network. These tunnels use the AES algorithm in GCM mode and manager nodes automatically rotate the keys every 12 hours1. This way, thedata exchanged between containers on different nodes on the overlay network is secured. Reference:
Overlay network driver

NEW QUESTION # 176
Will this command list all nodes in a swarm cluster from the command line?
Solution: 'docker Is -a'

A. Yes
B. No

Answer: B

Explanation:
The command docker Is -a does not list all nodes in a swarm cluster from the command line, but rather lists all containers, both running and stopped, on the current node1. To list all nodes in a swarm cluster, you need to use the command docker node ls from a manager node2. This command shows the node ID, hostname, status, availability, and manager status for each nodein the swarm2. You can also use the --filter option to filter the output based on various criteria2. Reference: Docker Documentation, docker node ls

NEW QUESTION # 177
......

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