Explain the following mechanisms in the multipath propagation:
i. Reflection,
ii. Diffraction
iii. Scattering
[5 points]
b. For a system of 32 cells with a cell radius of 1.6 km, a total frequency bandwidth that supports 336
traffic channels, and a reuse factor of N = 7, What geographical area does the system cover?
[3 points]
c. How many channels will be available per cell from the previous question?
[2 points]
Question 3.
a. List any 4 key requirements for routing function in a Packet Switching Network.
[5 points]
b. Describe the difference between Link State Routing and Distance Vector Routing?
[5 points]
Question 4.
a. Based on your understanding of CSMA/CD, sketch a State Diagram of the Rules that relates to it with
a maximum transmission attempt of 16s.
[5 points]
b. Outline the steps followed by the Link State Routing Protocol in the event of failure.
[5 points]
Question 5.
a. Describe the four abstraction layers of TCP/IP
[4 points]
b. Describe a typical scenario involving 2 Computer Devices transferring a video file using an unsecured
ftp connection where TCP three-way handshake is susceptible to vulnerability.
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