Final answer:
A passive fingerprinting tool is a software or tool that collects information about devices or networks without actively scanning or probing them. One example is Wireshark.
Step-by-step explanation:
A passive fingerprinting tool is a software or tool that collects information about devices or networks without actively scanning or probing them. One example of a passive fingerprinting tool is Wireshark, which captures network traffic and analyzes it to determine the characteristics of devices and protocols being used.