The 5-4-3 rule, also referred to as the IEEE way, is a design guideline for Ethernet computer networks covering the number of repeaters and segments on shared-medium Ethernet backbones in a tree topology. It means that in a collision domain there should be at most 5 segments tied together with 4 repeaters, with up to 3 mixing segments (10BASE5, 10BASE2, or 10BASE-FP).

4 3 2 1 is a novel by Paul Auster published in January 2017. At the time of its publication, it was the first new Auster novel to have appeared in seven years. Auster worked on the book seven days a week for three years and wrote it in long hand.

Origine du nom. Le nom « colorado » signifie « rouge », en espagnol [7].Les premiers explorateurs espagnols donnent d'abord ce nom au fleuve Colorado, riche de boues de grès rouge, et le gouvernement américain nomme le « territoire du Colorado » en 1861 [7].Le Colorado est aussi appelé Colorful Colorado en raison de ses paysages de montagnes, de rivières et de plaines.