DEFINITION 1: The focal point of a concave lens is the point where light rays parallel to the axis seem to diverge from after passing through the lens. The distance from the lens to this point is called the focal length of the lens.
Sniffers. Tweet. Submit article. A sniffer, also known as a network analyzer, packet sniffer or ethernet sniffer, is a computer program that monitors and analyzes network traffic transmitted from one network location to another. A sniffer captures each packet sent, decodes it and allows to view its content.niffers. Tweet. Submit article. A sniffer, also known as a network analyzer, packet sniffer or ethernet sniffer, is a computer program that monitors and analyzes network traffic transmitted from one network location to another. A sniffer captures each packet sent, decodes it and allows to view its content.
CommView for WiFi is a packet sniffer that is specifically designed for Wi-Fi networks. As you would expect, the program allows you to capture packets and then search them for specific strings, packet types, etc. One of the most useful features provided by this utility is an alarm (Figure A) .