Which of the following backup methods should be used nightly to ensure backups capture all necessary data in the LEAST amount of time?
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A. B. C. D.B.
The backup method that should be used nightly to ensure backups capture all necessary data in the LEAST amount of time is the Incremental backup method (Option B).
An incremental backup only backs up data that has changed since the last backup, which is usually a daily backup. This means that an incremental backup takes the least amount of time to complete because it only needs to copy a smaller amount of data that has been added or changed since the previous backup.
In contrast, a daily backup (Option A) copies all data from the previous day, regardless of whether it has changed or not. This means that a daily backup takes longer to complete than an incremental backup because it copies all data each time, even if the data has not been modified.
A normal backup (Option C) is a full backup that copies all data, and it typically takes the longest amount of time to complete. This method is usually performed at the beginning of a backup cycle or when the system is first set up.
A differential backup (Option D) backs up all data that has changed since the last full backup. This means that it takes less time to complete than a normal backup, but more time than an incremental backup because it copies more data.
In summary, the Incremental backup method (Option B) is the best option for nightly backups because it captures all necessary data while taking the least amount of time to complete.