1.How long would it take an image which is 1024 pixels by 768 pixels with 16 bit colour encoding to transfer via:-

i.GSM - 9.6 kbps

ii.UMTS - 2 Mbps

iii.802.11g - 54 Mbps

2. How long would a 10 MB animation take to transfer via:-

i.56 kbps Modem

ii.1 Gbps LAN

3.A High Definition (19201080 resolution, 24 bit colour encoding per pixel, 24 frames per second) film of 1 hour and 45 minutes duration, is to be transmitted over a communication channel in under 12 s. What is the minimum transmission speed of the system?

4.A floppy disk stores 1.4 MB of data and weighs 30 g. If an airliner carries 30,000 kg of these floppies at a speed of 1000 km/hr over a distance of 5000 km, what is the data rate achieved?

The following files were sent over a communication link and their transmission time recorded.

	File	File	File	File	File
File Size	125 B	250 B	375 B	500 B	625 B
Transmission Time	0.625 s	1.250 s	1.875 s	2.500 s	3.125 s

Plot the data on a graph. Transmission Time on the y axis and file size in bits on the x axis)

Using the graph, determine how long it will take to transfer a file of 300 B

What is the gradient?

What is the equation of the line?

What is the reciprocal of the gradient?

What is the transmission speed of the system?