DCA Exam Topic | DCA Certification Exam

We provide the Docker Certified Associate (DCA) Exam (DCA) exam questions in a variety of formats, including a web-based practice test, desktop practice exam software, and downloadable PDF files. PassLeaderVCE provides proprietary preparation guides for the certification exam offered by the Docker Certified Associate (DCA) Exam (DCA) exam dumps. In addition to containing numerous questions similar to the Docker Certified Associate (DCA) Exam (DCA) exam, the Docker DCA exam questions are a great way to prepare for the Docker DCA exam dumps.

Docker Certified Associate (DCA) certification exam is an important certification for IT professionals who work with Docker container technology. Docker Certified Associate (DCA) Exam certification validates the knowledge and skills of the candidates in various areas such as Docker architecture, installation and configuration, Docker networking, security, and troubleshooting. Docker Certified Associate (DCA) Exam certification is globally recognized and helps the individuals to advance their career in the field of Docker container technology.

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Docker Certified Associate (DCA) Exam Sample Questions (Q125-Q130):

NEW QUESTION # 125
The Kubernetes yaml shown below describes a networkPolicy.

Will the networkPolicy BLOCK this traffic?
Solution: a request issued from a pod lacking the tier: api label, to a pod bearing the tier: backend label

A. No
B. Yes

Answer: B

Explanation:
The networkPolicy shown in the image is designed to block traffic from pods lacking the tier: api label, to pods bearing the tier: backend label. This is because the policy is set to matchLabels: tier: backend, and the ingress is set to - from: podSelector: matchLabels: tier: api. Therefore, any traffic that does not match these labels will be blocked.
:
Isolate containers with a user namespace | Docker Docs
The mnt namespace - Docker Cookbook - Second Edition
Container security fundamentals part 2: Isolation & namespaces
I hope this helps you understand the concept of networkPolicy and how it works with Kubernetes. If you have any other questions related to Docker, please feel free to ask me.

NEW QUESTION # 126
Two development teams in your organization use Kubernetes and want to deploy their applications while ensuring that Kubernetes-specific resources, such as secrets, are grouped together for each application.
Is this a way to accomplish this?
Solution: Create one pod and add all the resources needed for each application

A. No
B. Yes

Answer: A

Explanation:
Explanation
his is not a way to accomplish this, because creating one pod and adding all the resources needed for each application is not a good practice for deploying applications in Kubernetes. According to the official documentation, pods are not intended to run multiple instances of an application or different applications that are tightly coupled. Pods are also not meant to hold resources that are shared across applications, such as secrets or configMaps.
References: https://kubernetes.io/docs/concepts/workloads/pods/#what-is-a-pod

NEW QUESTION # 127
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: node taints

A. No
B. Yes

Answer: B

Explanation:
Node taints are a way to mark nodes in a Swarm cluster so that they can repel or attract certain containers based on their tolerations. By applying node taints to the nodes that are designated for development or production, the company can ensure that only the containers that have the matching tolerations can be scheduled on those nodes. This way, the security policy requirements can be met. Node taints are expressed as key=value:effect, where the effect can be NoSchedule, PreferNoSchedule, or NoExecute. For example, to taint a node for development only, one can run:
kubectl taint nodes node1 env=dev:NoSchedule
This means that no container will be able to schedule onto node1 unless it has a toleration for the taint env=dev:NoSchedule. To add a toleration to a container, one can specify it in the PodSpec. For example:
tolerations:
- key: "env"
operator: "Equal"
value: "dev"
effect: "NoSchedule"
This toleration matches the taint on node1 and allows the container to be scheduled on it. Reference:
Taints and Tolerations | Kubernetes
Update the taints on one or more nodes in Kubernetes
A Complete Guide to Kubernetes Taints & Tolerations

NEW QUESTION # 128
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 get deployment api

A. No
B. Yes

Answer: A

Explanation:
Explanation
Using kubectl get deployment api does not display the events table for this object. The kubectl get command shows basic information about one or more resources, such as their name, age, status, etc. It does not show the events table, which is a list of events that occurred on the resource, such as creation, update, scaling, etc. To see the events table for this object, you need to use kubectl describe deployment api. References:
https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#get,
https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#describe

NEW QUESTION # 129
Will this command display a list of volumes for a specific container?
Solution: docker volume inspect nginx'

A. No
B. Yes

Answer: A

NEW QUESTION # 130
......

DCA Certification Exam: https://www.passleadervce.com/Docker-Certified-Associate/reliable-DCA-exam-learning-guide.html

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DCA Exam Topic | DCA Certification Exam

DCA Certification Exam & DCA Vce Torrent

Docker Certified Associate (DCA) Exam Sample Questions (Q125-Q130):

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