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How do I prepare for the configuration questions on the CCNA exam?

I am trying to prepare for CCNA exam. I think my weakness is handling the questions in which one is supposed to find out what is not configured properly in a small network and how to fix it. Do you have any suggestion as to how I can prepare myself better for such questions?

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This truly is one of the ultimate tests of the CCNA exam and unfortunately, there is no easy shortcut for them. The best way to prepare yourself is to understand the correct configuration backwards and forwards. That way, when presented with an incorrect configuration, you should be able to distinguish something is incorrect. Depending on the difficulty of the question, this could be something easily recognizable, like a router missing a network statement in the routing protocol configuration, or it could be something very specific, like the interfaces being on opposite subnets.

The best approach to save time on the exams is to eliminate any distracters (those that are obviously wrong due to syntax or whatnot) and focus on the remaining answers if it is multiple choice. If it is a simulation, show the configuration of each router and look for any missing statements. In addition, you should be able to perform a variety of show commands in the devices. For instance, if you do a show interface command, you will be able to tell if you have Layer 1 or Layer 2 correctly configured on the device. If you still can't ping the neighbor, the problem must be a Layer 3 problem (routing protocol or IP addressing).

This was first published in January 2005

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