The total congestion cost, which is the value of wasted time and fuel, is estimated to have cost US urban areas $101 billion in 2010, or $713 per commuter. The largest urban areas, not surprisingly, incur the highest congestion costs (see figure 1).
Cisco Packet Tracer is a powerful network simulator that can be utilized in training for CCNA TM and CCNP TM certification exam by allowing students to create networks with an almost unlimited number of devices and to experience troubleshooting without having to buy real CiscoTM routers or switches.
Cisco Packet Tracer is a very powerful network simulator designed and built by Cisco Systems that allows students to work on CCNA and CCNP certification exams to build up networks with the virtually unlimited number of devices and improve problem-solving in networked environments without purchasing a true Cisco Router or Switch Program.