305-300: LPIC-3 Virtualization and ContainerizationDemo

By LPI · Question Mode

QuestionQ15

VM Deployment and Provisioning

Which of the following statements are true regarding sparse images for virtual machine storage?

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

Sparse virtual disk images are thin-provisioned: their physical backend usage differs from their nominal logical capacity, and storage is allocated when a virtual disk block is first written. Oracle VirtualBox documents that dynamically allocated images initially use no space for unused sectors and grow when a sector is written for the first time, up to the configured maximum capacity.

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