What is a benefit of using a captive portal for guest access in Aruba networks?

Using a captive portal for guest access in Aruba networks primarily allows for easy guest authentication and tracking. Captive portals serve as a web-based user interface that guests are presented with when they first connect to a network. Upon accessing the network, users are redirected to this portal where they can enter credentials or agree to terms of service before gaining internet access.

This method of authentication simplifies the process for organizations to manage guest users, as it can include data collection such as email addresses or other identification. Organizations can then analyze this data for tracking user activity and improving service delivery. Therefore, the use of a captive portal aids not only in securing connection points but also provides a means for the organization to effectively manage visitor access while ensuring compliance with security policies.

In contrast, the other options present benefits that do not directly correlate with the primary functions of a captive portal. For example, providing unlimited data access or guaranteeing maximum performance are operational aspects that depend more on the network settings and bandwidth policies rather than the authentication method. Similarly, while data encryption is essential for security, the captive portal itself does not inherently enhance encryption across users' sessions.