What is the longest run of UTP cable allowed for a single segment connection?

What is the longest run of UTP cable allowed for a single segment connection?

• 110 to 150 meters
• 90 to 100 Meters
• 100 to 105 meters
• 80 to 89 meters 

EXPLANATION

UTP cable does not have a maximum length.
However, the protocol that runs over UTP has a maximum length for performance and technical reasons (such as collision detection in Ethernet).

You're probably talking about Ethernet, and the maximum end-to-end cable length in Ethernet (at least for 100Base-TX, 1000Base-T and 10GBase-T) is 100M.

Assuming you're running full-duplex, you're withing spec (and hence should be fine) as long as no switch-switch or switch-host connection exceeds 100M.