CS601-Data Communication Solution of Assignment No. 02 November Fall 2013

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Assignment No. 02
Semester: Fall 2013
CS601-Data Communication

Total Marks: 20
Due Date: 6/12/2013

Question 1: (10 Marks)

You are required to represent the data stream 1001101001 using the following encoding schemes on different graphs separately.

• NRZ-L
• NRZ-I

Question 2: (5 Marks)

a) A periodic signal has a bandwidth of 700 Hz and its lowest frequency is 200 Hz; find out its highest frequency with all necessary steps.

b) Consider the following sine wave, and calculate its time period and frequency.


  cs601.jpg (Size: 36.77 KB / Downloads: 2,442)


Question 3: (5 Marks)

Suppose a message travels from device A to B in OSI model. Headers and trailers are added to the message before it reaches the destination B. Considering the given scenario, you are required to identify:
• The sequence of OSI layers in which headers and trailers are added at device A.
• The sequence of OSI layers in which headers and trailers are removed at device B.