Just commencing study for the CCNP routing exam and as I understand it to
date, the correct terminology is that you have Classful routing protocols
not networks.

A classful routing protocol (such as RIP or IGRP) assumes that everything
else in the routing table has the same subnet mask.

A classless routing protocol (such as RIPv2 and EIGRP) has support for
Variable Length Subnet Masks which can be used for the conservation of IP
addresses and these VLSM's are transmitted with each routng table update.

Perhaps this question would be better suited to the CCNA list.


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