What type of traffic is transported over a broadband cable network's return path?

What type of traffic is transported over a broadband cable network's return path?

• A. Voice and data traffic along with communications via set-top boxes and other monitoring devices throughout the network
• B. Video traffic only
• C. Data traffic only
• D. Voice traffic only

Answer: (A)

In a broadband cable network, the return path is the upstream direction—traffic traveling from the customer back toward the service provider. This path handles more than one type of upstream communication: voice traffic (such as VoIP), data uploads from customer devices, and the signaling and telemetry used by set-top boxes and other monitoring equipment throughout the network. Downstream video and most other content travel on the forward path, so they don’t belong to the return path. Since the return path must support all these upstream activities together, the option that includes voice, data, and communications via set-top boxes and monitoring devices best describes what’s transported there. Choices that mention only one type miss the essential upstream signaling and control traffic.

In a broadband cable network, the return path is the upstream direction—traffic traveling from the customer back toward the service provider. This path handles more than one type of upstream communication: voice traffic (such as VoIP), data uploads from customer devices, and the signaling and telemetry used by set-top boxes and other monitoring equipment throughout the network. Downstream video and most other content travel on the forward path, so they don’t belong to the return path. Since the return path must support all these upstream activities together, the option that includes voice, data, and communications via set-top boxes and monitoring devices best describes what’s transported there. Choices that mention only one type miss the essential upstream signaling and control traffic.