| A | B |
|---|
| A router initializes by loading the | bootstrap, the operating system, and a configuration file |
| If the router cannot find a configuration file, | then it enters setup mode |
| Where the router stores a backup copy of the configuration file | NVRAM |
| the router executes diagnostics from ROM on all hardware modules | POST |
| After verifying the hardware functions, the router proceeds with | software initialization |
| Load Bootstrap form | ROM |
| Locates and loads operation system from | Flash, TFTP server, ROM |
| Locates and loads configuration file from | NVRAM, TFTP server, Console |
| The location of the operating system is disclosed in | the boot field of the configuration register |
| If no valid configuration file exists in NVRAM, | the operating system executes a question-driven initial configuration routine referred to as the system configuration dialog |
| -- display the backup configuration files | show startup-config |
| display the active configuration files | show running-config |
| deletes the backup configuration file in NVRAM | erase startup-config |
| reboots the router | reload |
| used to enter setup mode from the privileged EXEC prompt | setup |
| The commands show config, write term, and write erase, used with | Cisco IOS Release 10.3 and earlier |
| For many of the prompts in the system configuration dialog of the setup command facility, default answers appear in | square brackets [ ] following the question. |
| If the system has been previously configured, the defaults that will appear in the setup mode will be | the currently configured values |
| During the setup process, to terminate the process and start over | you can press Control+C |
| If setup mode is terminated, all interfaces will be administratively shutdown. | administratively shutdown. |
| a one-way cryptographic secret word that is used instead of the "enable password" when it exists. | "enable secret word" |
| All passwords are | case sensitive and can be alphanumeric. |
| The script file generated by setup is additive; | you can turn features on with setup, but you cannot turn them off. |
