Cisco Ccna2

  • July 2020
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Olika komponenter och vad de används till: RAM – Routing table information, fast switching cache, running conf and packet queues, arp cache NVRAM – store backup/startup config, Retains content when router is powered down or restarted FLASH – storage of full Cisco IOS software images ROM- permaentely storage of diagnostic code, Maintains instructions for power-on self test (POST) diagnostics

Router osv: They operate at Layer 3 of the OSI model, making decisions based on network addresses. The two main functions of a router are the selection of best path for and the switching of frames to the proper interface. Routers accomplish this by building routing tables and exchanging network information with other routers.

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