Free LPIC-3: Virtualization and Containerization – Exam 305, version 3.0 Exam 305-300 Exam Practice Test

What is the default provider of Vagrant?

• lxc
• hyperv
• virtualbox
• vmware_workstation
• docker

FILL BLANKWhich subcommand of virsh opens the XML configuration of a virtual network in an editor in order to make changes to that configuration? (Specify ONLY the subcommand without any parameters.)

Which of the following statements about the command lxc-checkpoint is correct?

• It creates a clone of a container.
• It doubles the memory consumption of the container.
• It only works on stopped containers.
• It writes the status of the container to a file.
• It creates a container image based on an existing container.

What is the purpose of the command vagrant init?

• It executes a provisioning tool in a running box.
• It starts a Vagrant box.
• It creates a Vagrant configuration file.
• It installs Vagrant on a Linux host.
• It downloads a Vagrant box.

If docker stack is 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?

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

Which functionality is provided by Vagrant as well as by Docker? (Choose three.)

• Both can share directories from the host file system to a guest.
• Both start system images as containers instead of virtual machines by default.
• Both can download required base images.
• Both can apply changes to a base image.
• Both start system images as virtual machines instead of containers bv default.

Which of the following statements in a Dockerfile leads to a container which outputs hello world? (Choose two.)

• ENTRYPOINT "echo Hello World"
• ENTRYPOINT [ "echo hello world" ]
• ENTRYPOINT [ "echo", "hello", "world" ]
• ENTRYPOINT echo Hello World
• ENTRYPOINT "echo", "Hello", "World*

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

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

The command virsh vol-list vms returns the following error:error: failed to get pool 'vms'error: Storage pool not found: no storage pool with matching name 'vms 'Given that the directory /vms exists, which of the following commands resolves this issue?

• dd if=/dev/zero of=/vms bs=1 count=0 flags=name:vms
• libvirt-poolctl new –-name=/vms –-type=dir –-path=/vms
• qemu-img pool vms:/vms
• virsh pool-create-as vms dir --target /vms
• touch /vms/.libvirtpool

What is the purpose of the packer inspect subcommand?

• Retrieve files from an existing Packer image.
• Execute commands within a running instance of a Packer image.
• List the artifacts created during the build process of a Packer image.
• Show usage statistics of a Packer image.
• Display an overview of the configuration contained in a Packer template.