We are sending a 7.4 KB (care this is kilo bytes!) file from a source host to a destination host. All links in the path

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We are sending a 7.4 KB (care this is kilo bytes!) file from a
source host to a destination host. All links in the path between
source and destination have a transmission rate of 8 Kbps. Assume
that the propagation speed is 2 * 10^8 meters/sec, and the distance
between source and destination is 40,000 km. Reply to the following
questions. Show your work please. (12 pnts)
1. If there is only one link between source and destination
and the file is send as one packet how much is the transmission
delay? Please include headers in your calculation. In particular
assume that the file is sent using TCP over IPv6. Moreover the Data
Link layer adds 26 bytes for header when forming the Link Layer
frame. For TCP assume that the header added to the packet has the
minimum possible size.
2.How much is the end-to-end delay (transmission delay plus
propagation delay) in the previous setup?
3.Now suppose there are eight links between source and
destination (7 routers in the path between source and destination).
Each link is 5000 km long. Again suppose the file is sent as one
packet. Suppose there is no congestion, so that the packet is
transmitted onto the next link as soon as the router receives the
entire packet. What is the end-to-end delay(transmission delay plus
propagation delay)? Remember to add headers. (Hint: The router uses
store-and-forward packet switching.)
4.Now suppose that the file is broken into 10 packets. Ignore
router processing delays, but remember to add the headers to the
computation. Assuming store and forward packet switching at the
routers, what is the total delay? Again there are eight links
between source and destination (7 routers in the path between
source and destination). Each link is 5000 km long.