Multiple choice

A router boots and enters setup mode. What is the reason for this?

  1. The IOS image is corrupt.

  2. Cisco IOS is missing from flash memory.

  3. The configuration file is missing from NVRAM.

  4. The POST process has detected hardware failure.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A Cisco router enters setup mode when it cannot locate a valid configuration file in NVRAM. This happens on a new router or when the configuration register is set to ignore the startup-config. The IOS image being corrupt would cause boot failure, not setup mode. Setup mode is the router's way of getting initial configuration from the user.

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