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800-150 · Question #2

What is the primary purpose of changing the configuration register when performing password recovery?

The correct answer is B. To ignore the startup configuration. During password recovery on Cisco devices, the configuration register is modified to instruct the device to bypass the startup configuration stored in NVRAM. This allows administrators to access the device without being prompted for existing passwords. The standard procedure…

Troubleshooting Methodologies

Question

What is the primary purpose of changing the configuration register when performing password recovery?

Options

  • ATo erase the entire configuration
  • BTo ignore the startup configuration
  • CTo unlock all user accounts
  • DTo enable advanced debugging features

How the community answered

(26 responses)
  • A
    4% (1)
  • B
    88% (23)
  • C
    8% (2)

Explanation

During password recovery on Cisco devices, the configuration register is modified to instruct the device to bypass the startup configuration stored in NVRAM. This allows administrators to access the device without being prompted for existing passwords. The standard procedure involves changing the configuration register value to 0x2142, which tells the device to ignore the startup configuration during the next boot. Once access is gained, the administrator can reset passwords and then restore the original configuration by resetting the configuration register to its default value, typically 0x2102.

Topics

#password recovery#configuration register#startup config#ROMMON

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