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31 Days Before Your CCENT Certification by Scott Bennett

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Connect, Configure, and Verify the Operation Status of a Device Interface

I like to imagine packets piling up at the end of the cable, just waiting to be accepted by the router. They wait for you to activate and assign an IP address to the interface so that the router can start business for the day. Chapter 5 of CCNA Discovery 2 describes the steps necessary to configure a serial and Ethernet interface on a router.

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