Which of the following cables is typically used for video backbone distribution?

The correct choice for video backbone distribution is RG-11 cable. RG-11 is a 75-ohm coaxial cable that is commonly used in both video and broadcast applications due to its capability to transmit signals over longer distances with lower attenuation compared to other types of coaxial cables. This characteristic makes RG-11 ideal for backbone installations, where signal integrity is critical over extended runs.

While there are other types of cables that might be used in certain contexts, RG-11 specifically stands out for video applications because of its thicker gauge, which helps minimize signal loss and interference. It is often used in the distribution of cable television signals, satellite feeds, and in professional video setups, making it the standard choice for video backbone systems.

The other options, while they may have specific applications in telecommunications or networking, do not offer the same level of performance or suitability for video distribution as RG-11.