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What type of disaster recovery implementation uses a facility that is prepared but not operational until needed?

  1. Hot site

  2. Active/active

  3. Warm site

  4. Cold site

The correct answer is: Cold site

A cold site is a disaster recovery implementation that refers to a backup facility that is equipped with the necessary infrastructure, such as power and connectivity, but does not have any dedicated hardware or current data until an actual disaster occurs. This type of site is not operational and may require substantial time and resources to become fully functional after a disaster, as staff would need to set up equipment, migrate data, and restore services. In contrast, a hot site is fully operational at all times, featuring complete data redundancy and hardware ready for immediate use. An active/active implementation involves multiple data centers that share a load and provide continuous availability without downtime. A warm site falls in between hot and cold sites; it has some necessary hardware and data but may not be fully operational or up-to-date with real-time data. Therefore, a cold site is specifically designed to provide a lower-cost solution for disaster recovery that necessitates activation and setup when a disaster strikes.