If a node in an HFC network experiences congestion, what is the likely impact on service?

If a node in an HFC network experiences congestion, what is the likely impact on service?

• A. Localized, isolated channel degradation.
• B. Widespread degradation across the neighborhood.
• C. No impact due to automatic rerouting.
• D. Increased uplink speeds.

Answer: (B)

In an HFC network, a node aggregates many homes and shares fixed downstream and upstream bandwidth among all subscribers connected to it. When that node becomes congested, the limited capacity must be divided among many users, so everyone on that node experiences slower speeds, higher latency, and more buffering. Since the issue affects the shared point of connection for the whole neighborhood, the degradation is felt broadly rather than by just one user. Automatic rerouting around a congested node isn’t a typical remedy in this architecture, and congestion would not lead to higher uplink speeds.

In an HFC network, a node aggregates many homes and shares fixed downstream and upstream bandwidth among all subscribers connected to it. When that node becomes congested, the limited capacity must be divided among many users, so everyone on that node experiences slower speeds, higher latency, and more buffering. Since the issue affects the shared point of connection for the whole neighborhood, the degradation is felt broadly rather than by just one user. Automatic rerouting around a congested node isn’t a typical remedy in this architecture, and congestion would not lead to higher uplink speeds.