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Digital Communications
Advanced Digital Communications
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Q.1
Which needs re-sending of signal?
a) Error correction
b) Error detection
c) Error correction & detection
d) None of the mentioned
Q.2
Which needs more check bits?
a) Error correction
b) Error detection
c) Error correction & detection
d) None of the mentioned
Q.3
Which gets less affected by noise?
a) Error correction
b) Error detection
c) Error correction & detection
d) None of the mentioned
Q.4
Which is used to protect privacy of the information?
a) Compression coding
b) Source coding
c) Cipher coding
d) None of the mentioned
Q.5
Digital signals are easy for
a) Storage
b) Handling
c) Time dilation
d) All of the mentioned
Q.6
Which are forward error correcting codes?
a) Block codes
b) Convolutional codes
c) Block & Convolutional codes
d) None of the mentioned
Q.7
Which operates on continuous stream of data?
a) Block codes
b) Convolutional codes
c) Block & Convolutional codes
d) None of the mentioned
Q.8
Which is more complex?
a) Encoding
b) Decoding
c) Encoding & Decoding
d) None of the mentioned
Q.9
Which has better minimum distance?
a) Check sum
b) Cyclic redundancy check
c) Check sum & Cyclic redundancy check
d) None of the mentioned
Q.10
In symmetric key cryptosystem, who knows the key?
a) Sender
b) Receiver
c) Sender & Receiver
d) None of the mentioned
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