| A | B |
|---|
| FLASH | the next place a router looks for the IOS software if there are no boot system commands in NVRAM |
| TFTP Server | where the router searches for the IOS software if the Flash is empty |
| 0x---0 | configuration register mode used to tell the router to boot from ROM monitor mode. |
| 0x---1 | configuration register mode is used to tell the router to boot from ROM |
| 0x---2 | configuration register mode used to tell the router to boot from NVRAM |
| Router# copy flash tftp | command used to copy a system image to a network server |
| Router# show flash | command used to view the name of the system image file |
| Router# copy tftp flash | command that would be used to copy the new IOS image from a network server |
| 0x2142 | configuration register is used on a Cisco 2500 series router during password recovery. |
| show version | command is used to discover the configuration register setting. |
