Show your work as well as your answers. Read all of these instructions carefully before

starting your work. Pay careful attention to the units and the definitions.

You have 3 blue-ray disks full of mind-numbing videos (assume 50 giga bytes per disk). You want to send them to another site. One option is to send them FedEx next day. If you drop them off at 3:00pm and they are deceived at 10:100 am the next day, your transmission rate will be 3 * 50 giga bytes per 19 hours.

a. translates the FedEx transmission rate to bits per second.

b. if we use a modern transfer file, how long will it take using a modem the same speed as the Mars Rover direct to earth which landed early 2004. The worst-case speed is 3500 bits per second (bps); at best it can send at 12,000 bps. Compute the time for both speeds.

c. Using a V.90 telephone modem (assume you really get 52kbs)

d. using a T1 line,1.544 mbs

e. Using a high speed fiber line at OC-12, 622.06 mbs

f. Using ethernet at 1000 mbs

g. Using 802.11n @ 180mbs. Assume full speed

H. 3G cell service advertises a data rate up to 2 mbps, 4G up to 20mbps. In practice these vary widely. However, use these speeds to compute how long the transfers take.

I. the New Horizons probe did a fly by of Pluto (summer 2015) its signals took 4 hours to reach

earth and its transmission rate is 1000 bps. How long would it take to send our 3 Blu Ray disks

worth of info. In reality, it is taking 18 months to send the much smaller set of images it took as

it did its fly by.

With the exception of the FedEx example, in doing your computations assume

5% overhead, i.e., you have to send the number of bits times 1.05

Use the following definitions

- byte = 8 bits

- kilobyte = 1,024 bytes

- megabyte = 1,048,576 bytes

- gigabyte = 1,073,741,824 bytes

- kbs = kilo bits per second = 1000 bps

- mbs = mega bits per second = 1,000,000 bits per second

Give your answers in days:hours:mins:secs