Which of the following uses a standard RJ-45 modular connector for twisted pair cable?

The correct answer is HDBaseT, which utilizes a standard RJ-45 modular connector for twisted pair cable. HDBaseT is specifically designed to transmit high-definition video, audio, control signals, and power over a single Ethernet cable. By utilizing the RJ-45 connector and twisted pair cabling, HDBaseT allows for long-distance transmission, typically up to 100 meters, making it highly versatile and effective for modern AV installations.

In contrast, HDMI relies on a distinct connector that is specifically designed for high-definition multimedia and does not use twisted pair cabling with RJ-45. USB also has its own unique connectors, such as Type-A and Type-B, which are different from RJ-45 and are not intended for twisted pair cabling. Coaxial cable, on the other hand, utilizes a circular connector and is not associated with twisted pair configurations or RJ-45 connectors. Thus, the application of the RJ-45 connector in HDBaseT is essential for its functionality in an AV context.