What do routers do ? They route !
That is the simple answer, it is the way they perform this routing that takes a little effort to understand. Once you get this fundamental then you can apply this knowledge in all routing situations.

What do routers do ? They route !
That is the simple answer, it is the way they perform this routing that takes a little effort to understand. Once you get this fundamental then you can apply this knowledge in all routing situations.

The objectives of this section are:
Explain the purpose of the Cisco IOS.
Explain how to access a Cisco IOS device for configuration purposes.
Explain how to navigate Cisco IOS to configure network devices.
Describe the command structure of the Cisco IOS software.
Configure hostnames on a Cisco IOS device using the CLI.
Use Cisco IOS commands to limit access to device configurations.
Use Cisco IOS commands to save the running configuration.
Explain how devices communicate across network media.
Configure a host device with an IP address.
Verify connectivity between two end devices.

first
The objectives of this section are:
Explain how networks affect the way we interact, learn, work, and play.
Explain how host devices can be used as clients, server, or both.
Explain the use of network devices.
Compare the devices and topologies of a LAN to the devices and topologies of a WAN.
Describe the basic structure of the Internet.
Explain how LANs and WANs interconnect to the Internet.
Explain the concept of a converged network
Describe the four basic requirements of a reliable network