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For example this 40 400 series router may have modules installed such as in this bottom example or may

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not have modules installed.

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So when the route boots up it's got to determine what interfaces it has inserted what modules are available

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how much RAM is available and various other components.

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You could even install a UCSC survey into a rodded today.

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So when the rocket boots up it needs to determine what's physically installed and available on the router.

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So the power on self test will test the basic functionality of the rod hardware to determine whether

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it's working determined whether it's supported and determine which components are present.

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As an example you may have mistakenly inserted a voice interface card into wanting to face card slot

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voice interface cause of Vicks may need to be inserted into specific modules and you may have inserted

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the wrong card into the wrong module on a router so it needs to do this power on self-test to determine

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what's installed and where the things are installed correctly and working correctly.

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Run monitor includes a low level operating system that is used for troubleshooting possible recovery

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and testing.

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This is different to the standard Rato operating system and doesn't support routing.

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You could use Ramona's as an example to download a router operating system.

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If there's none available on the router or you could use Romagna to do a password recovery which I'll

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demonstrate in this course.