Section B

Question 1: a. Describe Attenuation in transmission performance.

b. A signal period registered a 1ms on an oscilloscope. Calculate the fundamental frequency of the signal?

c. Define Refraction in a transmission media

d. Describe how Guglielmo Marconi achieve long distance radio transmission within 2 30 MHz and how that has shaped modern wireless transmission like radio and television.

Question 2:

An ISP has a block of IP Addresses with 32 Subnet groups for Subscribers office network Servers. If one of the IP Address is 210.122.180.1, use that information to answer the questions below:

a. Is the IP Address Private or Public and explain your response?

b. How many Subnet bits is the ISP using? c. How many Servers can Subscribers setup?

d. What will be the Servers Subnet Mask?

e. List all the possible IP Address from minimum to maximum for the first 2 Subnet out of the 32 Subnet groups allocated for subscribers office network Servers?

Question 3 a. Briefly state two (2) advantages of Packet Switching over Circuit Switching.

b. Briefly state three (3) disadvantages of Packet Switching over Circuit Switching.