A Network has 50 routers in which every router has a delay of 8bit .
Delay is actually a metric of router and has a proper field in routing table .
Hence total size of delay field is 50 * 8bits = 400bits
Also a router is connected to other routers which means it is a dedicated path , hence full utilization
of bandwidth will be there .
This field is updated twice a second onto each line .
Hence, 800 bps is needed in each direction (as it is full duplex)
for each line.