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problem 1: If we want to join 20 voice-grade signals (each of 4 KHz) with a guard band of 1 KHz between them, how much bandwidth do we require?

problem 2: The figure below shows a multiplexer. When the slot is only 10 bits long (three bits taken from each input plus one framing bit), then what is the output bit stream? What is the output bit rate? Determine the duration of each bit in the output line? How many slots are sent per second? What is duration of each and every slot?

2035_multiplexer.jpg

problem 3: The figure below shows a demultiplexer. If the input slot is 12 bits long (avoid framing bits), then what is the bit stream in each and every output? Find out the bit rate for each output line?

1866_demultiplexer.jpg

problem 4: The figure below shows a statistical TDM multiplexer. How much is the data rate of each line is reduced if all 10 lines are sending the data? How many stations can send data at similar time with full capacity? Avoid extra bits required for addressing.

2423_statistical TDM.jpg

problem 5: Which is more proficient, circuit switching or the virtual circuit switching? Describe why?

problem 6: What are the two types of switching which is used in circuit switching?

problem 7: Determine cross point in a cross bar switch? What is limiting factor in a cross bar switch? How does a multistage switch sort out this problem?

problem 8: How is blocking associated to a cross bar switch and a multistage switch?

problem 9: How is space-division switching superior than the time-division switching? And how is time-division switching superior than the space-division switching?

problem 10: Why is circuit switching not efficient for the transmission of non-voice data?

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M97262

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