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packet switching. n. A method of data transmission in which data is broken into small blocks that are transmitted over different channels and are reassembled into their original order at their destination.
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.