Network-Layer Functions and Routing Quiz

The two important functions of the network layer are forwarding and routing.

Forwarding is the router-local action of transferring a packet from an input link interface to the appropriate output link interface.

Routing is the network-wide process that determines the end-to-end paths that packets take from source to destination.

<p>The purpose of a router's forwarding table is to indicate the router's outgoing link interface to which a packet is to be forwarded.</p> Signup and view all the answers

<p>A router determines the outgoing link interface for a packet by examining the value of a field in the arriving packet's header and using this header value to index into the router's forwarding table.</p> Signup and view all the answers