Part 3: Data Communications and Networking Parts 1 and 2 covered an overview of entertainment and show control sys- tems. Now we move onto data communications ("datacom") and network- ing, the fundamental building blocks of all modern entertainment control systems. If these topics are new to you, please don't be intimidated--many others in entertainment are in the same situation--these technologies have not historically been covered in traditional entertainment technology training. If you haven't yet worked on a job site where Ethernet is ubiquitous, rest