Which feature accelerates throughput by efficiently handling established connections?

Which feature accelerates throughput by efficiently handling established connections?

• A. FastTrack
• B. Connection Tracking
• C. Mangle
• D. Queues

Answer: (A)

The idea is that established connections can be forwarded using a fast path that bypasses the full processing done for new connections. When a connection is first seen, the router checks and tracks it, building state. For subsequent packets in that same connection, the fast path recognizes the connection as established and forwards those packets with much less per-packet work. This reduces CPU load and increases overall throughput on busy links because the router isn’t redoing the same heavy checks for every packet in that flow. That’s why this option is the best fit: it specifically targets established connections to accelerate their traffic, delivering higher throughput. The underlying mechanism is connection tracking, which is necessary to know which connections are established, but on its own it doesn’t speed things up. Mangle and Queues influence packet handling and shaping, not the dedicated fast-forward path for established connections.

The idea is that established connections can be forwarded using a fast path that bypasses the full processing done for new connections. When a connection is first seen, the router checks and tracks it, building state. For subsequent packets in that same connection, the fast path recognizes the connection as established and forwards those packets with much less per-packet work. This reduces CPU load and increases overall throughput on busy links because the router isn’t redoing the same heavy checks for every packet in that flow.

That’s why this option is the best fit: it specifically targets established connections to accelerate their traffic, delivering higher throughput. The underlying mechanism is connection tracking, which is necessary to know which connections are established, but on its own it doesn’t speed things up. Mangle and Queues influence packet handling and shaping, not the dedicated fast-forward path for established connections.