1. The minimum Nyquist bandwidth needed for baseband transmission of Rs symbols per second is

A. Rs

B. 2Rs

C. Rs/2

D. Rs2

2. The capacity relationship is given by

A. C = W log2 ( 1+S/N )

B. C = 2W log2 ( 1+S/N )

C. C = W log2 ( 1-S/N )

D. C = W log10 ( 1+S/N )

3. Which parameter is called as Shannon limit?

A. PB/N0

B. EB/N0

C. EBN0

D. None of the mentioned

4. Entropy is the measure of

A. Amount of information at the output

B. Amount of information that can be transmitted

C. Number of error bits from the total number of bits

D. None of the mentioned

5. Equivocation is the

A. Conditional entropy

B. Joint entropy

C. Individual entropy

D. None of the mentioned

6. For an error-free channel, the conditional probability should be

A. Zero

B. One

C. Equal to the joint probability

D. Equal to individual probability

7. Average effective information is obtained by

A. Subtracting equivocation from entropy

B. Adding equivocation with entropy

C. Ratio of number of error bits by the total number of bits

D. None of the mentioned

8. Turbo codes are

A. Forward error correction codes

B. Backward error correction codes

C. Error detection codes

D. None of the mentioned

9. Components used for the generation of turbo codes are

A. Inter leavers

B. Punching pattern

C. Inter leavers & Punching pattern

D. None of the mentioned

10. Decoders are connected in series.

A. True

B. False