Exam 100-101 Topic 2 Question 63 Discussion

Some of the features and functions of a switch include:
A switch is essentially a fast, multi-port bridge, which can contain dozens of ports.
Rather than creating two collision domains, each port creates its own collision domain.
In a network of twenty nodes, twenty collision domains exist if each node is plugged into its
own switch port.
If an uplink port is included, one switch creates twenty-one single-node collision domains.
A switch dynamically builds and maintains a Content-Addressable Memory (CAM) table,
holding all of the necessary MAC information for each port.
For a detailed description of how switches operate, and their key differences to hubs, see the reference link below.
ReferencE. http://www.cisco.com/warp/public/473/lan-switch-cisco.shtml