Which type of guide requires a more complex knowledge of the system?

The admin guides require a more complex knowledge of the system because they are designed specifically for individuals who manage and maintain the system, rather than everyday users. These guides often include detailed information about configuration, troubleshooting, user management, and security settings, which necessitates a deeper understanding of the system's architecture and functionality.

In contrast, user guides are aimed at end-users and focus on basic functions and operational needs, requiring less technical expertise. Operational guides generally outline procedures for managing daily tasks and processes without diving into complex system intricacies. Recovery guides provide instructions for restoring systems after failures, but they focus on specific scenarios rather than the comprehensive management of the system. Therefore, admin guides play a crucial role in enabling system administrators to effectively oversee and optimize the system, making their complexity higher in relation to the other types of guides.