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Department of Computer Science and Engineering
Data Communication
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Question 1 : The band width of an ASK signal is
Option-1 :1+r
Option-2 :1-r/R
Option-3 :1+r/1-r
Option-4 :B=(1+r)R
Question 2 : The following is a seven bit codeand all the possible 128 codes have been defined
Option-1 :ASCII
Option-2 :EBCDIC
Option-3 :Baudot Code
Option-4 :Teleprinter Code
Question 3 : The following is a 8 bit code.
Option-1 :ASCII
Option-2 :EBCDIC
Option-3 :Baudot Code
Option-4 :Teleprinter Code
Question 4 : ????.Identifies the start of the block in synschronous transmitter .
Option-1 :Header
Option-2 :Trailer
Option-3 :Block
Option-4 :Flag
Question 5 : The more common term for data block is
Option-1 :block
Option-2 :Frame
Option-3 :bit
Option-4 :byte
Question 6 : In AM ??of the carrier is varied with respect to the modulating signal
Option-1 :Amplitude
Option-2 :Phase
Option-3 :Frequency
Option-4 :Time
Question 7 : In FSK the band width required is
Option-1 :Twice than that of ASK
Option-2 :Thrice than that of ASK
Option-3 :4 Times that of ASK
Option-4 :Same as that of ASK
Question 8 : In synschronous transmission the clock pulses is extracted from the
Option-1 :Electrical Signals
Option-2 :Multiplexer
Option-3 :Modulating signal
Option-4 :carrier signal
Question 9 : The Modulation indexof an AM wave ranges from
Option-1 :0 to 1
Option-2 :1 to infinity
Option-3 :1 to 2
Option-4 :2 to 5
Question 10 : The Modulation indexof an FM wave is
Option-1 :del/fm
Option-2 :fm/del
Option-3 :mf/fc
Option-4 :fc/fm
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