Configuring a Cisco router is more than just entering commands. In order to properly understand what the configuration steps do, you need to have a basic understanding of the components of a router, including processor, memory, and input/outputs. In this course, Configuring a Cisco Router for Cisco CCNA 200-125/100-105, you will learn different types of memory and the files stored in them, the order in which the files are loaded, as well as the function of each file. First, you will walk though, step by step, the commands and their function to properly configure the basic features of the device. This includes setting a router name, securing user and privileged modes, enabling encrypted remote support via SSH, and applying IP addresses to interfaces so the router can pass traffic. Next, you will see a demonstration about configuring the router in a long form, and then redo the same configuration using tips, tricks, and shortcuts to speed up the process. Common errors, including errors made during the configuration, will be pointed out and discussed. You will wrap up the course by examining Internetworking Operating System (IOS) file names, demonstrating how to upgrade IOS, as well as how to access router configuration when you don't know the password. By the end of this course, you'll understand the commands required to bring a router online, allowing it to pass traffic from one interface to another, which will help you on your path to earning the CCNA.