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Which backup system allows for immediate access to restored data?

  1. Online

  2. Incremental

  3. Full

  4. Cloud

The correct answer is: Online

An online backup system is designed for immediate access to restored data because it stores data on a remote server that can be accessed over the internet. This means that when data needs to be restored, it can be retrieved almost instantaneously from the online storage environment. The nature of online backups ensures that data is readily available for restoration without the need for physical retrieval or lengthy processes. While full backups also provide a complete copy of data, if this backup is stored offline, retrieving it may take longer as it requires physical access to the storage medium. Incremental backups only save changes made since the last backup and may involve additional steps to piece together the full restoration set from multiple backups, leading to potential delays in data retrieval. Cloud backup solutions can also provide immediate access, similar to online backups, but the term "cloud" can encompass various types of backup systems, not all of which guarantee immediate access. Therefore, "online" is the most precise term in this context emphasis on immediate accessibility of restored data.