What is the primary purpose of air gapping in network security?

The primary purpose of air gapping in network security is indeed to ensure a network is not connected to others. This method involves physically isolating a network from other networks, including the internet, to prevent unauthorized access and attacks. By creating this physical gap, organizations can protect sensitive data and critical systems from external threats, malware, and data breaches that can occur when a network is connected to an unsecured environment. Air gapping is especially important in environments that handle sensitive information, such as military installations, financial institutions, and industrial control systems.

The other choices do not align with the core purpose of air gapping. Creating redundancy in network connections is focused on ensuring reliability and availability rather than security isolation. Enabling remote access contradicts the very idea of air gapping, as remote access typically requires network connectivity. Facilitating data sharing is also not compatible with the purpose of an air gap, which restricts connection to prevent any form of data exchange with external networks.