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if delays are recorded as 8 Bit numbers in 50 router network and delay vector are exchanged twice a second how much bandwidth per full duplex line is chewed by distributed routing algorithm. Assume each router has 3 lines to other routers
a)400 bps
b)800 bps
c)1200 now
d) none

1 Answer

3 votes
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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.

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