(ISC)2 Certified in Cybersecurity Practice Exam

Which of the following provides a data "safety net" to prevent data loss?

1. Data Redundancy

2. Encryption

3. Backups

4. Firewall Protection

The correct answer is: Backups

The concept of a data "safety net" directly aligns with the purpose of backups. Backups are copies of data that are created and stored in a separate location, allowing for recovery in the event of data loss due to various factors such as accidental deletion, hardware failure, corruption, or malware attacks. By regularly creating backups, an organization ensures that they can restore their data to a previous state, effectively acting as a safety net for their critical information. In contrast, while data redundancy involves creating multiple copies of the same data within a system to improve access and reliability, it does not necessarily provide the same level of protection from loss as a backup, particularly if the primary data becomes corrupted or lost. Encryption serves to protect data from unauthorized access but does not address the aspect of data recovery after loss. Firewall protection is essential for guarding against external threats and attacks, but it does not provide any mechanism for data recovery. Therefore, backups are the most effective means of preventing data loss and maintaining data integrity over time.