Eve, an eavesdropper, wants to capture as much communication traffic as possible. She can eavesdrop on a specific channel for at most two hours, contiguously or otherwise, or she will be detected. There are ten channels for her to choose from and she can eavesdrop for a total of 10 hours. Each channel cycles its transmission, but Eve will learn nothing by capturing the same traffic twice.

 

The following table shows all how much traffic is sent across a channel in the specified transmission time.

 

Channel#	1	2	3	4	5	6	7	8	9	10
Overall traffic volume (Mb)	7	15	12	12	4	10	6	80	64	14
Transmission time (Hours)	1	3	3	2	1	4	6	4	16	2

 

1. Describe how you can determine the greatest volume of traffic Eve can capture, given the constraints of the system.  (3 marks)

 

1. Use your method of part a) to determine which channels Eve should eavesdrop on to maximise the traffic captured. Show the details of your working. (6 marks)

 

1. Specify the overall volume of traffic captured by Eve.?