Computer Hacking Forensic Investigator (CHFI) Practice Exam 2025 - Free CHFI Practice Questions and Comprehensive Study Guide

Active scanning methodology in wireless network discovery tools is characterized by the proactive approach of sending out probe requests to identify available networks and gather information about them. This involves broadcasting a probe request frame, where the device actively asks for responses from all nearby access points. When the access points receive these requests, they respond with information about their network, such as SSID, supported protocols, and signal strength. This method allows for a more dynamic and responsive discovery process, effectively mapping the available wireless networks in the vicinity.

In contrast, other methods mentioned are more passive or indirect. For instance, sniffing packets from the airwave involves listening in on network traffic without actively engaging with the networks, which may not provide the same level of detailed information as active scanning. Scanning the network might imply checking for connectivity or validating existing connections, which may not encompass obtaining detailed network information. Inspecting WLAN and surrounding networks suggests a broader exploration without implying the interactive process that active scanning employs. Thus, broadcasting a probe request frame stands out as the definitive method for active scanning in wireless network discovery.