Backup and Recovery CV0-004 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What is the primary benefit of data deduplication in a backup system?

   • AIt speeds up the backup process by compressing data
   • BIt encrypts data to protect it from unauthorized access
   • CIt reduces storage space by eliminating duplicate data
   • DIt verifies data integrity by comparing hashes
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   What is the purpose of error correction codes (ECC) in backup storage?

   • ATo compress data to save space
   • BTo encrypt data for security
   • CTo deduplicate data
   • DTo detect and correct errors in data
   Reveal Solution Discussion Select an answer first
4. 23expert · hard

   A software development company uses versioned backups to protect its source code repository. The backup system uses data deduplication to save storage. A developer accidentally committed a large file containing sensitive data, and the file was backed up. The administrator needs to remove the sensitive data from all backups while preserving the ability to restore the repository to any point in time before the accidental commit. What is the most effective approach?

   • ARestore the repository to a state before the commit, then create a new full backup and delete all old backups.
   • BKeep the backups as-is and rely on the fact that the data is encrypted at rest.
   • CModify the backup software's deduplication store to remove the blocks containing the sensitive data.
   • DDelete the specific backup version that contains the sensitive data and all subsequent versions, then re-create the later versions from the current repository state.
   Reveal Solution Discussion Select an answer first
5. 24foundation · easy

   What is the primary purpose of version control in backup systems?

   • ATo keep multiple historical versions of files
   • BTo compress data to save space
   • CTo encrypt data for security
   • DTo deduplicate data
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A backup administrator is evaluating a new backup solution that uses data deduplication. The solution stores only unique blocks and references them across multiple backup versions. The administrator is concerned that a single corrupted block could affect multiple backups. Which feature should the administrator look for in the backup solution to mitigate this risk?

   • APer-block checksums that are verified during every restore and a garbage collection process that identifies and repairs corrupted blocks.
   • BA deduplication ratio report that shows how much storage is being saved.
   • CA feature that creates a full copy of each backup version.
   • DA feature that disables deduplication for critical backups.
   Reveal Solution Discussion Select an answer first