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3. .Under error free reception, the syndrome vector computed for the received cyclic code<br />
word consists of<br />
(a) alternate 1‘s and 0‘s starting with a 1<br />
(b) all ones<br />
(c) all zeros<br />
(d) alternate 0‘s and 1‘s starting with a 0<br />
4. Source 1 is transmitting two messages with probabilities 0.2 and 0.8 and Source2 is<br />
transmitting two messages with Probabilities 0.5 and 0.5. Then<br />
(a) MaximumuncertaintyisassociatedwithSource1<br />
(b) Boththesources1and2arehavingmaximumamountofuncertaintyassociated<br />
(c) There is no uncertainty associated with either of the two sources.<br />
(d) MaximumuncertaintyisassociatedwithSource2<br />
5. The Hamming Weight of the(6,3) Linear Block coded word 101011<br />
(a) 5<br />
(b) 4<br />
(c) 2<br />
(d) 3<br />
6. If X is the transmitter and Y is the receiver and if the channel is the noise free, then the<br />
mutual information I(X,Y) is equal to<br />
(a) Conditional Entropy of the receiver, given the source<br />
(b) Conditional Entropy of the source, given the receiver<br />
(c) Entropy of the source<br />
(d) Joint entropy of the source and receiver<br />
7. In a Linear Block code<br />
(a) the received power varies linearly with that of the transmitted power<br />
(b) parity bits of the code word are the linear combination of the message bits<br />
(c) the communication channel is a linear system<br />
(d) the encoder satisfies superposition principle
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