Exam Essentials
227
Summary
W
ell, that concludes your introduction to the Cisco Internetwork
Operating System (IOS)! And, as usual, it's super-important for you to have
the basics that we went over in this chapter fully "dialed in" before you move
on to subsequent chapters. So, here's a list of those important basics for you
to go through point by point to make sure you're where you should be:
Understanding the Cisco Internetwork Operating System (IOS) and
how you can use the IOS to run and configure Cisco routers
Connecting to a router with console connections and LAN connections
Bringing up a router and entering setup mode
Logging into a router and understanding the difference between user
mode and privileged mode
Understanding router prompts within router configuration mode
Understanding editing and help features available from the router CLI
Gathering basic routing information using the show commands
Setting router passwords for both user-mode and privileged-mode
access
Setting router banners for identification
Performing interface configurations to set the IP address on an interface
Setting router hostnames for router identification
Setting interface descriptions to identify each interface on a router
Viewing and saving router configurations using the show commands
and the copy run start command
Verifying routing configurations using show commands
Exam Essentials
Understand the sequence of what happens when you power on a router.
When you first bring up a Cisco router, it will run a power-on self-test
(POST), and if that passes, it will then look for and load the Cisco IOS
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