Which of the following tools is used to detect wireless LANs using the 802.11 a/b/g/n WLAN standards on a linux platform?

Kismet is an open-source wireless network detector, packet sniffer, and intrusion detection system designed for Linux that supports 802.11 a/b/g/n WLAN standards. It operates passively by capturing raw radio frames without transmitting, making it the correct tool for Linux-based wireless reconnaissance across all major 802.11 standards.

NetStumbler is a wireless detection tool designed exclusively for Windows and does not run natively on Linux.

Nessus is a vulnerability scanner used to identify security weaknesses in hosts and services, not a wireless LAN detection or sniffing tool.

Abel (from the Cain and Abel suite) is a Windows-based password recovery and network analysis tool, not a wireless LAN detector and not Linux-compatible.