Q$.$

a$)$Suppose that the TCP congestion window is set to $18$ KB and a time out occurs. How big will the window be if the next four transmission bursts are all successful? Assume that the MSS is $1$ KB$.$

b$)$On a TCP connection, current congestion window size is $4$ KB$.$ The window advertised by the receiver is $6$ KB$.$ The last byte sent by the sender is $10240$ and the last byte acknowledged by the receiver is $8192.$

please solve this question and calculation step by step $.$