What algorithm does NETTCP implement for congestion control?

• A. Reno algorithm
• B. Cubic algorithm
• C. Vegas algorithm
• D. Sack algorithm

Answer: (B)

NETTCP implements the Cubic algorithm for congestion control. This algorithm is particularly well-suited for high-bandwidth and high-latency networks, making it a preferred choice for many modern applications. Cubic optimizes the congestion window size, increasing it more aggressively after a congestion event compared to its predecessors while still ensuring stability and responsiveness.

The Cubic algorithm uses a cubic function to calculate the congestion window growth over time, which allows it to efficiently utilize available bandwidth and quickly ramp up data transmission rates after recovering from congestion, compared to other algorithms that may have more conservative adjustments. This makes it particularly effective in environments where connection latency is significant and where maximizing throughput is crucial.

By employing this approach, NETTCP can provide improved network performance, making it more reliable in delivering data across varying network conditions.