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Information Technology

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DEPARTMENT OF
APPLIED INFORMATION SYSTEMS

Communication Networks 2A
Assignment: Networking Project
Due Date: 23 March 2016 at 16:00

Full Marks: 50

Instructions: Submit the hard copy of your assignment (typed) to my office. No electronic submission (email) is considered.
Only the hard copies submitted will be assessed.
Late submission of assignments will be assessed a penalty of 10% per day.

Question 1

(10)

You work as a networking professional in a large manufacturer company and distributer of generic healthcare products. The time has come for your company to expand. The board of directors has purchased another warehouse for a second distribution facility. It’s located in an industrial area, about 12kms from the company’s headquarters. Unfortunately, the cables has not reached this area, and given the numerous obstacles to digging, it would be prohibitively expensive to install.

1.1

What type of long distance, high-throughput wireless technology do you recommend to connect the headquarters with the new distribution center?
(5)

1.2

List the benefits and drawbacks of this type of connection compared with T1 over
SONET connection.
(2)

1.3

List the type of equipment (components) each location would need to make your wireless solution work.
(3)

Question 2

(20)

Both B8ZS and HDB3 are variants of Bipolar-AMI encoding scheme that you have studied.
2.1

Using sources from the library or the Internet, write a brief explanation (how they work) of the following encoding schemes: Pseudoternary, B8ZS, and HDB3.
(6)

2.2

What is the relationship between pseudoternary and Bipolar-AMI encoding methods?
(4)
Show graphically the B8ZS encoded signal for the data input sequence of
100000000101.
(5)

2.3
2.4

Show graphically the HDB3 encoded signal for the data input sequence of
01100001010000.
(5)

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