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.
What is Packet Tracer. Packet Tracer is a powerful network simulator that can be utilized in training for CCNA and CCNP certification exam by allowing students to create networks with an almost unlimited number of devices and to experience troubleshooting without having to buy real Cisco routers or switches. The tool is created by Cisco Systems. The purpose of Packet Tracer is to offer students a tool to learn the principles of networking as well as develop Cisco technology specific skills. However, it is not be used as a replacement for Routers or Switches. Here how it looks like after we start it.