Bakeng sa 100Base-TX, e sebetsang ho 100 Mbps, nako ea ho fetisa data e le 'ngoe, e tsejoang ka "bit time," e baloa ka tsela e latelang:

[ \mongolo{Bit Time} = \frac{1}{100 , \text{Mbps}} = 10 , \text{ns} ]

Mokhoa ona oa phetisetso o sebelisa CSMA/CD (Carrier Sense Multiple Access with Collision Detection), e lumellang ho lemoha ho thulana ha marang-rang marang-rang a arolelanoang. Leha ho le joalo, haeba bolelele ba thapo bo feta limithara tse 100, monyetla oa ho lemoha likhohlano oa fokotseha, ho beha tahlehelo ea data kotsing.

Ho bohlokoa ho hlokomela hore le hoja bolelele bo boholo bo behiloe ho limithara tse 100, maemo a itseng a ka lumella ho fetoha ha maemo. Mabelo a tlase, mohlala, a ka eketsa sebaka se ka sebelisoang ho fihla ho limithara tse 150-200, ho latela boleng ba thapo le maemo a marang-rang.