In the slow start phase of the TCP congestion control algorithm, the size ofthe congestion window

In the slow start phase of the TCP (Transmission Control Protocol) congestion control algorithm, the size of the congestion window increases exponentially. Specifically, the congestion window size increases by one segment for each acknowledgment (ACK) received, effectively doubling the window size each round-trip time (RTT). This exponential growth continues until the first loss event occurs or the congestion window size hits the slow start threshold (ssthresh), at which point TCP transitions to the congestion avoidance phase.