Final answer:
The role responsible for managing functional units such as networks, CAD/CAM, and systems programming is typically that of the technical services manager, who oversees a variety of technical systems to support the organization's operations.
Step-by-step explanation:
The question involves identifying the management role responsible for overseeing functional units such as networks, CAD/CAM, and systems programming within a business or organization. In the context of modern businesses, which divide tasks amongst various specialized roles, the role that typically manages these technical services is the technical services manager. A data center manager oversees the operations of data centers, ensuring their reliable and efficient function, but might not have the broader responsibility for all technical units. A systems development team is generally focused on creating and implementing new systems rather than managing existing service units. The database administrator manages and maintains databases specifically and does not typically oversee other technical services such as networks or CAD/CAM.
Therefore, managing functional units such as networks, CAD/CAM, and systems programming is typically a major duty of the technical services manager, who ensures that the various technical systems within an organization operate effectively and contribute to the company's goals.