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Free 305-300 Exam Braindumps (page: 4)

Page 3 of 16
PDF with 60 Questions

What is the purpose of capabilities in the context of container virtualization?

  1. Map potentially dangerous system calls to an emulation layer provided by the container virtualization.
  2. Restrict the disk space a container can consume.
  3. Enable memory deduplication to cache files which exist in multiple containers.
  4. Allow regular users to start containers with elevated permissions.
  5. Prevent processes from performing actions which might infringe the container.

Answer(s): E



Which directory is used by cloud-init to store status information and configuration information retrieved from external sources?

  1. /var/lib/cloud/
  2. /etc/cloud-init/cache/
  3. /proc/sys/cloud/
  4. /tmp/.cloud/
  5. /opt/cloud/var/

Answer(s): A



Which of the following statements are true about container-based virtualization? (Choose two.)

  1. Each container runs its own operating system kernel.
  2. Different containers may use different distributions of the same operating system.
  3. Container-based virtualization relies on hardware support from the host system's CPU.
  4. All containers run within the operating system kernel of the host system.
  5. Linux does not support container-based virtualization because of missing kernel APIs.

Answer(s): B,D



How does Packer interact with system images?

  1. Packer has to be installed within the target image and is executed during the image's first boot in order to execute preparation tasks.
  2. Packer installs a client within the image which has to be run periodically via cron in order to retrieve the latest template from the Packer server and apply it locally.
  3. Packer periodically connects through the network to the Packer daemons of all running Packer images in order to re-apply the whole template to the running instance.
  4. Packer downloads and extracts an image in order to make changes to the image's file system, repack the modified image and upload it again.
  5. Packer creates an instance based on a source image, prepares the instance through a network connection and bundles the resulting instance as a new system image.

Answer(s): E






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