EXAM 305-300 REFERENCE | TRUSTWORTHY 305-300 EXAM TORRENT

Exam 305-300 Reference | Trustworthy 305-300 Exam Torrent

Exam 305-300 Reference | Trustworthy 305-300 Exam Torrent

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The Lpi 305-300 Exam covers a range of topics, including the deployment and management of virtual machines and containers, virtualization and containerization architectures, and the use of tools and technologies for monitoring and troubleshooting virtualization solutions. Candidates are also expected to have a good understanding of the security and performance issues associated with virtualization and containerization technologies.

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Quiz 2025 Lpi 305-300: Latest Exam LPIC-3 Exam 305: Virtualization and Containerization Reference

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Lpi LPIC-3 Exam 305: Virtualization and Containerization Sample Questions (Q27-Q32):

NEW QUESTION # 27
Which of the following statements is true regarding networking with libvirt?

  • A. Libvirt's network functionality is limited to connectingvirtual machines to a physical network interface of the host system.
  • B. Libvirt supports exactly one virtual network and connects all virtual machines to it.
  • C. Libvirt assiqns the same MAC address to all virtual machines and isolates their network interfaces at the link layer.
  • D. Libvirt requires a dedicated network interface that may not be used by the host system.
  • E. Libvirt networks appear, by default, as standard Linux bridges in the host system.

Answer: E


NEW QUESTION # 28
What is the purpose of a .dockerignore file?

  • A. It exists in the root file system of containers that should ignore volumes and ports provided by Docker.
  • B. It specifies which parts of a Dockerfile should be ignored when building a Docker image.
  • C. It lists files existing in a Docker image which should be excluded when building a derivative image.
  • D. It specifies files that Docker does not submit to the Docker daemon when building a Docker image
  • E. It must be placed in the top level directory of volumes that Docker should never attach automatically to a container

Answer: D

Explanation:
Explanation
The purpose of a .dockerignore file is to specify files that Docker does not submit to the Docker daemon when building a Docker image. A .dockerignore file is a text file that contains a list of files or directories that should be excluded from the build context, which is the set of files and folders that are available for use in a Dockerfile. By using a .dockerignore file, you can avoid sending files or directories that are large, contain sensitive information, or are irrelevant to the Docker image to the daemon, which can improve the efficiency and security of the build process. The other options are incorrect because they do not describe the function of a
.dockerignore file. Option A is wrong because a .dockerignore file does not affect the files existing in a Docker image, but only the files sent to the daemon during the build. Option C is wrong because a .dockerignore file does not exist in the root file system of containers, but in the same directory as the Dockerfile. Option D is wrong because a .dockerignore file does not affect the volumes that Docker attaches to a container, but only the files included in the build context. Option E is wrong because a .dockerignore file does not affect the parts of a Dockerfile that are executed, but only the files available for use in a Dockerfile. References:
* What are .dockerignore files, and why you should use them?
* Dockerfile reference | Docker Docs
* How to use .dockerignore and its importance - Shisho Cloud


NEW QUESTION # 29
Which of the following statements are true regarding a Pod in Kubernetes? (Choose two.)

  • A. systemd is used to manage individual Pods on the Kubernetes nodes.
  • B. All containers of a Pod run on the same node.
  • C. Pods are always created automatically and cannot be explicitly configured.
  • D. A Pod is the smallest unit of workload Kubernetes can run.
  • E. When a Pod fails, Kubernetes restarts the Pod on another node by default.

Answer: B,D


NEW QUESTION # 30
Ifdocker stackis to be used to run a Docker Compose file on a Docker Swarm, how are the images referenced in the Docker Compose configuration made available on the Swarm nodes?

  • A. docker stack passes the images to the Swarm master which distributes the images to all other Swarm nodes.
  • B. docker stack builds the images locally and copies them to only those Swarm nodes which run the service.
  • C. docker stack transfers the image from its local Docker cache to each Swarm node.
  • D. docker stack triggers the build process for the images on all nodes of the Swarm.
  • E. docker stack instructs the Swarm nodes to pull the images from a registry, although it does not upload the images to the registry.

Answer: E

Explanation:
Explanation
Docker stack is a command that allows users to deploy and manage a stack of services on a Docker Swarm cluster. A stack is a group of interrelated services that share dependencies and can be orchestrated and scaled together. A stack is typically defined by a Compose file, which is a YAML file that describes the services, networks, volumes, and other resources of the stack. To use docker stack to run a Compose file on a Swarm, the user must first create and initialize a Swarm cluster, which is a group of machines (nodes) that are running the Docker Engine and are joined into a single entity. The Swarm cluster has one or more managers, which are responsible for maintaining the cluster state and orchestrating the services, and one or more workers, which are the nodes that run the services.
When the user runs docker stack deploy with a Compose file, the command parses the file and creates the services as specified. However, docker stack does not build or upload the images referenced in the Compose file to any registry. Instead, it instructs the Swarm nodes to pull the images from a registry, which can be the public Docker Hub or a private registry. The user must ensure that the images are available in the registry before deploying the stack, otherwise the deployment will fail. The user can use docker build and docker push commands to create and upload the images to the registry, or use an automated build service such as Docker Hub or GitHub Actions. The user must also make sure that the image names and tags in the Compose file match the ones in the registry, and that the Swarm nodes have access to the registry if it is private. By pulling the images from a registry, docker stack ensures that the Swarm nodes have the same and latest version of the images, and that the images are distributed across the cluster in an efficient way.
The other options are not correct. Docker stack does not build the images locally or on the Swarm nodes, nor does it copy or transfer the images to the Swarm nodes. Dockerstack also does not pass the images to the Swarm master, as this would create a bottleneck and a single point of failure. Docker stack relies on the registry as the source of truth for the images, and delegates the image pulling to the Swarm nodes. References:
* Deploy a stack to a swarm | Docker Docs1
* docker stack deploy | Docker Docs2
* docker build | Docker Docs3
* docker push | Docker Docs4


NEW QUESTION # 31
Which of the following statements are true about sparse images in the context of virtual machine storage?
(Choose two.)

  • A. Sparse images are automatically resized when their maximum capacity is about to be exceeded.
  • B. Sparse images are automatically shrunk when files within the image are deleted.
  • C. Sparse images can only be used in conjunction with paravirtualization.
  • D. Sparse images may consume an amount of space different from their nominal size.
  • E. Sparse images allocate backend storage at the first usage of a block.

Answer: D,E


NEW QUESTION # 32
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