In QRadar, which component is primarily responsible for monitoring network flows?

The Flow Processor is primarily responsible for monitoring network flows in QRadar. This component focuses on collecting, analyzing, and storing network flow data by processing packets on the network. It allows QRadar to detect and analyze ongoing traffic patterns, identify potential threats, and provide insights into network performance.

The Flow Processor enables QRadar to create flow records from various sources, including routers, switches, and firewalls, making it an essential tool for network visibility and security posture assessment. Its capability to parse flow data in real time allows security analysts to monitor unusual network activity, thereby enhancing the organization's security measures.

Other components such as the Event Processor focus on handling log events rather than monitoring network flows, which is a distinct function. The Network Hierarchy is related to the organization and visualization of network assets, while the Asset Profiler helps identify and classify devices on a network but does not play a role in monitoring flows directly. Thus, the Flow Processor’s specific functionality and its vital role in flow data management solidify its position as the correct answer.