Section 5. Routing
Routing is the process of finding a path to a destination and moving data across this path from source to destination. Routers are used to connect different IP networks and are essential devices that help make communication on the Internet. Routers are a major component of the routing process. Without routing, we would not be able to send emails, view our favorite websites, listen to music streams, or watch videos on the Internet.
In general, routing is considered a hop-by-hop paradigm. Some exceptions to this exist, such as multicast routing, but the ICND exams do not cover multicasting. Data is moved from router to router until it reaches the destination. A router’s main function is path determination and packet forwarding. ...
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