Which type of coaxial cable connector is commonly used?

The commonly used coaxial cable connector in this context is BNC. BNC, which stands for Bayonet Neill-Concelman, is a type of connector that is widely utilized in video and radio frequency applications. It provides a secure connection for coaxial cables and is frequently found in various networking, broadcasting, and surveillance systems.

Coaxial cables, such as RG-6, are characterized by their specific specifications for impedance and use cases, but RG-6 refers to the type of coaxial cable itself rather than a connector. Therefore, while RG-6 is commonly used in installations for satellite TV and cable television, it is the BNC connector that is recognized for its role in ensuring an effective connection. RJ-45 connectors are designed for twisted-pair Ethernet cabling, while USB connectors serve a completely different purpose related to data transfer and power supply, thus not applicable in the context of coaxial connections.