Which preservation strategy is also used besides bit-level preservation and format migration?

• A. Cloud storage
• B. Backups on external drives
• C. Emulation
• D. Data deduplication

Answer: (C)

Emulation preserves access by recreating the original hardware and software environment needed to run a digital object, so the file can be used and interacted with as it was originally intended even if the underlying technologies have become obsolete. This complements bit-level preservation, which keeps an exact binary copy, and format migration, which converts data to current formats to stay readable. Together, these strategies cover preserving not just the data, but the ability to render and use it across changing environments.

Cloud storage or backups on external drives primarily address storage and risk mitigation rather than maintaining the ability to access and interact with the object in its original context. Data deduplication focuses on reducing storage requirements, not on preserving accessibility or functionality over time.