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...Cisco router components memory types ram stores packet buffers arp cache routing table software code and data structures necessary for operation running configuration decompressed ios is stored in rom contains basic hardware testing initialization flash backup files not volatile nvram non saves sofware post power on self test checks functions bootstrap initiates loads monitor used tests troubleshooting interface low level issues internetwork operating system provides all of the higher functionalities register config controls various settings tell to load or ignore terminal behavior current value can bee seen with show version most common are x normal where always has two configurations shows which parameters currently use modified configure command startup loaded by next reboot this saved backups you store other places s a server via tftp be copied around copy...