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CS601 Data Communication Assignment 2 Solution Fall 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.

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.

Solution: Working on it.

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