Extension practice

Configuration Register Practice Questions

Extension practice: boot behavior controlled by the configuration register.

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A router boots with show version reporting a configuration register value of 0x2142. What effect does this have?

The router ignores the contents of NVRAM and boots into setup mode without the saved configuration

Bit 6 of the register (0x2142) tells the router to skip reading the startup-config in NVRAM at boot, which is the classic setting used for password recovery and the cause of a router appearing blank after a reload.

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