a$.$ With TCP flow control, what is the maximum bit rate application B$2$ on Host B can send to

Host D$?$

b$.$ With TCP flow control, what is the maximum bit rate application A$1$ on Host A can send to

Host C$?$

c$.$ Without TCP flow control, what is the maximum bit rate application A$1$ can send to Host C$?$

d$.$ What is the maximum bit rate Host $C$ can receive from Application $A1$ and $B1$ combined?

e$.$ What is the maximum bit rate Host D can receive from Application A$2$ and B$2$ combined?

f$.$ Which receive buffer, if there is one, will not be overrun even without flow control?

g$.$ Without flow control, what is the worse case receive buffer overrun, in Mbps$?$

h$.$ TCP flow control is end$-$to$-$end and cannot be used to control network congestion. The flow

control is turned on all the four TCP connections. Describe, in the diagram, such a network

congestion scenario.

i$.$ Refer to $2.$h$,$ describe second scenario

j$.$ Let the application reading rates at Host $D$ be reduced from $80Mbps$ and $60Mbps$ to

$30Mbps$ and $30Mbps$ respectively. With flow control, will the network be congested?