What is a key benefit of implementing NAC in a network?

Implementing Network Access Control (NAC) in a network provides enhanced visibility and control over network devices, which is a key benefit of this technology. NAC solutions allow administrators to see all devices connected to the network, their security status, and compliance with security policies. This visibility plays a crucial role in identifying unauthorized devices and ensuring that only compliant devices have access to network resources. By enforcing policies and access controls based on the security posture of each device, NAC helps to protect against potential threats and vulnerabilities. This capability is essential for maintaining a secure network environment, especially in organizations with diverse devices and users.

The other options do not align with the primary functions of NAC. For instance, while improved data storage capacity may be a benefit of various IT solutions, it is not directly related to NAC. Similarly, while reducing infrastructure costs may be an outcome of certain network optimizations, NAC primarily focuses on security and access management rather than physical infrastructure. Improved user interface design, while important for user experience, is also not a fundamental aspect of NAC's purpose or benefits.