This is one of the major reasons that TCP based applications are often barely able to use a fraction of the subscribed bandwidth, especially when the round-trip delay time (RTT) is large.
With the highest likelihood, it applies the backoff scheme of New Reno, which has already been proven to be effective and stable with many years of massive deployment.
The packet losses in the real network environment rarely spread evenly; rather they tend to happen close to each other.
Lab tests have confirmed that Zeta-TCP retransmitted much fewer packets than the other TCP implementations under the same loss rate.
While the other algorithms focus on accelerating the outgoing traffic, Reverse Control attempts to address the incoming issues.
The algorithm also tends to more accurately identify the real packet losses from other abnormal situations in order to avoid triggering unnecessary fast recoveries.
Unlike acceleration, slowing the inbound traffic is effective and accurate with the TCP flow control mechanism.
AppEx does not modify the protocol stack, but intercepts the TCP flows and apply its algorithms on-the-fly.