SK0-004 · Question #722
To capture only the files that have changed since the last full backup, an administrator should perform which of the following backups?
The correct answer is B. Differential. A differential backup captures all files that have changed since the last full backup, regardless of any intermediate backups performed.
Question
To capture only the files that have changed since the last full backup, an administrator should perform which of the following backups?
Options
- AFull
- BDifferential
- CSelective
- DIncremental
How the community answered
(34 responses)- A3% (1)
- B94% (32)
- C3% (1)
Why each option
A differential backup captures all files that have changed since the last full backup, regardless of any intermediate backups performed.
A full backup copies all selected data regardless of when it last changed, not just files modified since the previous full backup.
A differential backup copies every file that has been modified or created since the most recent full backup, accumulating changes over time until the next full backup is run. This means each differential backup contains a growing set of changed files but only requires the last full backup and the most recent differential to perform a complete restore. This distinguishes it from incremental backups, which only capture changes since the last backup of any type.
A selective backup is a manual, administrator-defined backup of specific files or folders and is not tied to change tracking relative to a previous full backup.
An incremental backup captures only files changed since the last backup of any kind - whether full or incremental - not specifically since the last full backup.
Concept tested: Differential vs incremental backup strategy
Source: https://learn.microsoft.com/en-us/windows-server/storage/data-deduplication/understand
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