Exam MTCNA Topic 4 Question 117 Discussion

Each port on a switch creates its own collision domain. Unlike hubs (which extend a single collision domain), switches segment each interface, allowing full-duplex communication and eliminating collisions.
MTCNA Course Material - Ethernet Switching Concepts:
"Each switch port is a separate collision domain. A 24-port switch creates 24 separate collision domains." Rene Meneses MTCNA Study Guide - Collision and Broadcast Domains:
"Switches break up collision domains per port, unlike hubs."
Therefore, a 12-port switch creates 12 individual collision domains.