Consider the diagram showing the nodes A, B and C. Link 1 has a

length 25Km and allows packets to be propagated at a speed of

255 x 10^6m/sec, while Link 2 has a length 5Km and allows

packets to be propagated at a speed of 287 x 10^6m/sec. Link 1

has transmission rate 125Mb/s and Link 2 has transmission rate

300Mb/s

Node A sends a packet P1 of 1200B and then it sends another

packet P2 immediately after it pushes all bits of P1 onto Link

1. What is the smallest size for P2 in Bytes such that there is

no queueing delay at Node B?

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What is the round trip time in microseconds (millionth of a

second) for a packet of 2500B over a link length of 73.75Km? The

Transmission rate of the link is 125Mb/s and the propagation

speed is 295 million m/s. 

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Your CPU has a clock speed of 5 GHz (10 to the power of nine

Hertz). How many clock cycles are used to go to and back from the

router that is 25m away? (assume the speed of propagation is

299,792,458 m/s). Round your answer to an integer.

Suppose a packet transmission time is 10 micro seconds (us). How

many packets can be stored on a link that is 45 km long, given

the speed of propagation of 299,792,458 m/s? Give an integer

number.

Suppose you have a link with a propagation delay of 15 us (micro

seconds) and a bit rate of 10 Mbps (million bits per second).

What is the packet delay of a 180 Byte packet? Give you answer in

micro seconds and round your answer if needed.