What is the 5-4-3-2-1 rule of network design?

Answer Posted / jitendera kumar sinha

Ethernet and IEEE 802.3 implement a rule, known as the 5-4-
3 rule is also known as the IEEE way, for the number of
repeaters and segments on shared access Ethernet backbones
in a tree topology. The 5-4-3 rule divides the network into
two types of physical segments: populated (user) segments,
and unpopulated (link) segments. The 5-4-3 rule is also
known as the IEEE way and is sometimes compared to the
Ethernet way which is having 2 repeaters on the single
network without having any hosts connected to a repeater.

5 Segments
4 Repeaters
3 Populated Segments
2 Unpopulated Segments
1 Collision Domain

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