Q$\mathrm{.}4)$ Consider the scenario below where $4$ TCP senders are connected to $4$ receivers. Senders transmit to the receiving hosts at the fastest rate possible $($i$.$e$.,$ at the rate at which the bottleneck link between a server and its destination is operating at $100\%$ utilization, and is fairly shared among the connections passing through that link$).R=1$ Gbps and again $Rc$ is $300Mbps$ and $Rs$ is $400Mbps$ and that all four senders have data to send,

What is the minimum value of Re that will ensure that the connections to Host$-1$ and Host$-2$ are not bottlenecked at links with capacity Rc or Re$?$