Cs 601 Current paper (Date 8 December 2011)

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					        CS 601 Current paper
       (Date 8 December 2011)
 Subjective Solved with Reference.
         Total 23 Questions:
             16 Quizzes.
          7 Long questions.
6 or 7 Quizzes are from past papers.
                           By MASOOM FAIRY


     Long questions are here:
Q: 17: Which one of the following is the subject to
noise and bandwidth limitation? MARKS: 2:
A) FSK
B) PSK
Answer:
Page number:89 of Handout.

Q: 18:How the size of multimedia is reduced for
efficient delivery?           MARKS: 2:

Q: 19: What will be the phase shift, if a signal take one
complete period?                MARKS: 2:

Answer:
Page number 61: A phase shift of 360 degrees
correspond to a shift of a complete period.
Q: 20: What is frequency spectrum?
Marks: 3:
Answer:
Frequency Spectrum: of a signal is the collection of all
the component frequencies
it contains   .  Page number 66:
Q: 21: What is the deference between Modulator and
Demodulator?                       MARKS: 3:
Answer:
A demodulator converts an analog signal into a digital
signal.

Modulator converts a digital signal into an analog
signal. Page number 110:
Q: 22:Using HDB3, encode the signal “1100001011”.
MARKS: 5:
Answer:
Page number 78:
Q: 23: Which functional Unit will be used to transmit the data in
the physical layer?                   MARKS:5:
 DTE
o DTE includes any unit that functions either as a source of or as a
destination for binary digital data
o At the physical layer, it cab a terminal, microcomputer, computer ,
printer or any other device that generates or consumes digital data
o DTEs do not often communicate with each other directly with each
other
o Think of DTE as your Brain.
o Your and your friends brains are DTEs
o The vocal chords or mouth are DCEs
o Air is TX Meduium
 DCE
o DCE includes any functional unit that transmits or receives data in the
form of an analog or digital signal through a network
o At the physical layer, a DCE takes data generated by a DTE, converts
it to the appropriate signal and then introduces it to the comm link
o Commonly used DCEs at the physical layer include MODEMS.
PAGE NUMBER: 101:

                                                           BY MASOOM FAIRY
                                      All the best

				
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Description: Cs 601 Current paper (Date 8 December 2011).