Question 1: (10 Marks)
You are required to represent the data stream 1001101001 using the following encoding schemes on different graphs separately.
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.
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