What is CISCO ?

Cisco is a giant international company engaged focusing primarily on the world of network routers .
To facilitate the user to learn Cisco

Cisco Corp. mendevelop simulation system known as Cisco Packet Tracer .This software can be downloaded for free and there are two versions of the base version of windows and unix .A. understanding RouterThe router is a network layer device that uses one or more system metrics to determine the optimal paths to forward traffic to a network . The router is able to avoid a collision broadcast .         

                                           
Some reasons to use Router :1 . Performance and stability are relatively higher2 . Have many alternative connections3 . Security can be relied4 . Ease of operation ( using IOS / Internetwork Operating System)5 . Practical and Flexible6 . Relatively lower costs compared with functional

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