During an audit of the company's disaster-recovery plan, the security administrator must recommend a backup technique that consumes the smallest amount of storage while backing up only data modified since the most recent full or incremental job. Which backup type should the administrator choose?
An incremental backup captures only the data that has changed since the last backup of any type-either full or incremental-so it typically requires the least storage space. A differential backup records all changes since the last full backup, so its size grows each day until another full backup occurs. A snapshot represents a point-in-time copy of a volume rather than a true change-based backup method. A full backup duplicates every selected file and therefore consumes the most storage.
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What is the difference between incremental and differential backups?
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What are the benefits of using an incremental backup strategy?
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What is a snapshot backup and how does it differ from an incremental backup?