Data Archiving and Compression
40 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary reason why user-created data needs to be backed up?

  • To recover from accidental deletions (correct)
  • To free up storage space
  • To restore the OS and apps
  • To restore system settings
  • What is the main disadvantage of manual backups?

  • It requires specialized software
  • It is time-consuming
  • It may not be done regularly (correct)
  • It is not automated
  • What is the benefit of using external media for backups?

  • Reduced hardware costs
  • Platform independence (correct)
  • Faster data transfer rates
  • Increased storage capacity
  • Why is having a local copy of data not considered a true backup?

    <p>It can be lost or damaged with the original data</p> Signup and view all the answers

    What is the main advantage of scheduled backups?

    <p>They have less impact on business operations</p> Signup and view all the answers

    What is the primary benefit of using cloud-based backup services?

    <p>Cost-effective communication bandwidth</p> Signup and view all the answers

    What is the main difference between automatic and manual backups?

    <p>Automatic backups run continuously in the background</p> Signup and view all the answers

    Why is restore importance critical in a backup strategy?

    <p>To ensure business continuity</p> Signup and view all the answers

    What is the primary purpose of the 3-2-1 Backup Checklist?

    <p>To ensure data backup and restore</p> Signup and view all the answers

    What is the main difference between lossless and lossy data compression formats?

    <p>Lossless preserves data quality, lossy reduces data quality</p> Signup and view all the answers

    What is the main difference between backup and synchronization?

    <p>Backup is for data protection, synchronization is for data access</p> Signup and view all the answers

    What is the significance of platform independence in data compression?

    <p>It enables data exchange across different operating systems</p> Signup and view all the answers

    Why is restore importance emphasized in data backup and compression?

    <p>To ensure data availability and access</p> Signup and view all the answers

    What is the primary benefit of using ZIP archives for data compression?

    <p>It enables cross-platform exchange of compressed data</p> Signup and view all the answers

    What is the primary purpose of using LZW compression algorithm?

    <p>To compress data for storage efficiency</p> Signup and view all the answers

    What is the significance of minimizing redundancy in data compression?

    <p>It reduces data transmission time</p> Signup and view all the answers

    Which RAID level provides the highest redundancy by using two parity drives?

    <p>RAID 6</p> Signup and view all the answers

    Why is lossy compression generally not recommended for backups?

    <p>It sacrifices quality, which is not suitable for data recovery</p> Signup and view all the answers

    What is one of the most frequent causes of data loss cited in backup strategies?

    <p>Accidental deletion by users or IT staff</p> Signup and view all the answers

    What characteristic is necessary for a backup to be considered geographically separate?

    <p>The backup must be stored away from the original data location</p> Signup and view all the answers

    What is a downside of using solid or multi-volume archives for data compression?

    <p>They can be entirely lost with minor data corruption</p> Signup and view all the answers

    In the context of backups, what does a 'classic file backup strategy' involving full and incremental backups imply?

    <p>Incremental backups are faster but require a sequential restore process</p> Signup and view all the answers

    When does a RAID setup appear as a single logical drive to the operating system?

    <p>When parity drives are excluded</p> Signup and view all the answers

    Why is testing your archived files important?

    <p>To confirm the integrity and usability of the archive</p> Signup and view all the answers

    Which option cannot be used as a platform-independent backup if it remains always connected to the system?

    <p>External drive</p> Signup and view all the answers

    What is the primary reason synchronization does not qualify as a proper backup strategy?

    <p>Synchronization is not platform-independent</p> Signup and view all the answers

    What is a significant potential drawback of cloud storage solutions like AWS Glacier for backup?

    <p>Variable restoration speeds</p> Signup and view all the answers

    Which item in the 3-2-1 backup checklist ensures an active file is not inadvertently altered?

    <p>Maintaining 3 copies of the data</p> Signup and view all the answers

    Which method optimizes storage by eliminating duplicate data copies?

    <p>Data deduplication</p> Signup and view all the answers

    Why are Windows File History and macOS Time Machine not considered true backups?

    <p>The drives used are often always connected</p> Signup and view all the answers

    Which backup method is primarily concerned with the speed and ease of restoration rather than the backup process itself?

    <p>Full backup</p> Signup and view all the answers

    What makes LTO tape or optical discs an attractive option for enterprise backup?

    <p>They are cost-effective for nearline tertiary storage</p> Signup and view all the answers

    Which statement best exemplifies a one-way backup to cloud cold storage?

    <p>Performing a one-time backup to geographically separate cloud storage</p> Signup and view all the answers

    Which of the following best reflects the 3-2-1 backup rule?

    <p>Having three copies of data, two on local devices and one in an off-site backup location</p> Signup and view all the answers

    What is the key difference between backup and synchronization?

    <p>Backup stores data in a secondary location without real-time file updates</p> Signup and view all the answers

    Why did the UniSuper pension fund not lose all their data after the incident on May 2, 2024?

    <p>They had an additional backup with a different provider following the 3-2-1 rule</p> Signup and view all the answers

    What was highlighted as the most important aspect of backups?

    <p>The ease of the restore process</p> Signup and view all the answers

    Which compression format is primarily used by the sound engineering and music industry?

    <p>FLAC</p> Signup and view all the answers

    Which data set would take the least amount of time to transfer over a network?

    <p>Compressed to 35% of original size</p> Signup and view all the answers

    Which video compression format is considered lossy?

    <p>MPG</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Browser