4. An organization creates a plan for long-term cloud storage of its backup data. What should the organization address to avoid losing access to its data?

Answer: D

Explanation:

Key management is essential to avoid losing access to backup data.

Effective key management ensures that encryption keys used to protect data are securely stored and accessible only to authorized personnel. This is crucial for maintaining access to data over the long term, as loss of keys can result in permanent data inaccessibility.

A) Regulatory compliance

While regulatory compliance is important for ensuring that data storage practices meet legal and industry standards, it does not directly address the issue of losing access to data. Compliance focuses more on the governance and ethical handling of data rather than the technical mechanisms required to maintain data accessibility.

B) Quantum computing

Quantum computing is an emerging technology that poses potential future challenges to data encryption. However, it is not a current concern for organizations planning long-term cloud storage for backup data. This option does not directly relate to the immediate need for maintaining access to data through effective key management.

C) Change tracking

Change tracking involves monitoring and documenting changes made to data over time. While it is useful for data integrity and version control, it does not specifically address how to manage access to the data itself. Thus, it is not a primary concern in preventing data loss related to access.

D) Key management

Key management is critical for protecting encrypted data and ensuring that access remains intact over time. Proper key management practices, including key rotation, secure storage, and access controls, directly prevent scenarios where access to backup data is lost due to key mismanagement or loss.

Conclusion

Key management is the definitive answer because it directly relates to maintaining access to encrypted backup data over the long term. The other options, while relevant to various aspects of data management, do not provide the necessary focus on securing access through effective management of encryption keys. Therefore, without robust key management, organizations risk losing access to their vital data.