Final answer:
The statement about the Tii356 being the demarcation point in a MDU is true, and the high-voltage wires are held aloft by insulating connectors but are not wrapped in insulating material, so that statement is false.
Step-by-step explanation:
The statement regarding the demarcation point in a small MDU (Multi-Dwelling Unit) being the Tii356 or protector is true. The Tii356 is a specific type of protector used as a demarcation point, which is the physical point at which the public network of a telecommunications provider like a phone or internet company ends and the private network of the customer begins. The demarcation point is critical in establishing where the responsibility for maintenance and repair switches from the service provider to the building owner or tenant.
Regarding the false statement about high-voltage wires, these wires are indeed held aloft by insulating connectors to prevent energy loss and protect against electrical hazards. However, these wires are generally not wrapped in insulating material because they are designed to withstand environmental conditions without additional insulation and because it would be impractical and costly to insulate such long stretches of wire. The air around the wires acts as an insulator.