40 Questions
What is the primary reason why user-created data needs to be backed up?
To recover from accidental deletions
What is the main disadvantage of manual backups?
It may not be done regularly
What is the benefit of using external media for backups?
Platform independence
Why is having a local copy of data not considered a true backup?
It can be lost or damaged with the original data
What is the main advantage of scheduled backups?
They have less impact on business operations
What is the primary benefit of using cloud-based backup services?
Cost-effective communication bandwidth
What is the main difference between automatic and manual backups?
Automatic backups run continuously in the background
Why is restore importance critical in a backup strategy?
To ensure business continuity
What is the primary purpose of the 3-2-1 Backup Checklist?
To ensure data backup and restore
What is the main difference between lossless and lossy data compression formats?
Lossless preserves data quality, lossy reduces data quality
What is the main difference between backup and synchronization?
Backup is for data protection, synchronization is for data access
What is the significance of platform independence in data compression?
It enables data exchange across different operating systems
Why is restore importance emphasized in data backup and compression?
To ensure data availability and access
What is the primary benefit of using ZIP archives for data compression?
It enables cross-platform exchange of compressed data
What is the primary purpose of using LZW compression algorithm?
To compress data for storage efficiency
What is the significance of minimizing redundancy in data compression?
It reduces data transmission time
Which RAID level provides the highest redundancy by using two parity drives?
RAID 6
Why is lossy compression generally not recommended for backups?
It sacrifices quality, which is not suitable for data recovery
What is one of the most frequent causes of data loss cited in backup strategies?
Accidental deletion by users or IT staff
What characteristic is necessary for a backup to be considered geographically separate?
The backup must be stored away from the original data location
What is a downside of using solid or multi-volume archives for data compression?
They can be entirely lost with minor data corruption
In the context of backups, what does a 'classic file backup strategy' involving full and incremental backups imply?
Incremental backups are faster but require a sequential restore process
When does a RAID setup appear as a single logical drive to the operating system?
When parity drives are excluded
Why is testing your archived files important?
To confirm the integrity and usability of the archive
Which option cannot be used as a platform-independent backup if it remains always connected to the system?
External drive
What is the primary reason synchronization does not qualify as a proper backup strategy?
Synchronization is not platform-independent
What is a significant potential drawback of cloud storage solutions like AWS Glacier for backup?
Variable restoration speeds
Which item in the 3-2-1 backup checklist ensures an active file is not inadvertently altered?
Maintaining 3 copies of the data
Which method optimizes storage by eliminating duplicate data copies?
Data deduplication
Why are Windows File History and macOS Time Machine not considered true backups?
The drives used are often always connected
Which backup method is primarily concerned with the speed and ease of restoration rather than the backup process itself?
Full backup
What makes LTO tape or optical discs an attractive option for enterprise backup?
They are cost-effective for nearline tertiary storage
Which statement best exemplifies a one-way backup to cloud cold storage?
Performing a one-time backup to geographically separate cloud storage
Which of the following best reflects the 3-2-1 backup rule?
Having three copies of data, two on local devices and one in an off-site backup location
What is the key difference between backup and synchronization?
Backup stores data in a secondary location without real-time file updates
Why did the UniSuper pension fund not lose all their data after the incident on May 2, 2024?
They had an additional backup with a different provider following the 3-2-1 rule
What was highlighted as the most important aspect of backups?
The ease of the restore process
Which compression format is primarily used by the sound engineering and music industry?
FLAC
Which data set would take the least amount of time to transfer over a network?
Compressed to 35% of original size
Which video compression format is considered lossy?
MPG
Learn about the importance of data integrity and recovery in archiving, and the trade-offs of using lossy compression. Understand the limitations of solid or multi-volume archives and the need for testing archive integrity.
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