Digital Communication Questions and Answers, Set 94

Digital Communication Questions and Answers


Q1. 
The output of the source encoder is an analog signal.

Answer :   
False


Q2. 
When probability of error during transmission is 0.5, it indicates that

Answer :   
Channel is very noisy & No information is received


Q3. 
When X and Y are statistically independent, then I (x,y) is

Answer :   
0

Q4. 
Coded system are inherently capable of better transmission efficiency than the uncoded system.

Answer :   
True


Q5. 
Error is equal to

Answer :   
Square of the distance between the data points


Q6. 
Interpolation is a method of

Answer :   
Estimating


Q7. 
In digital image coding which image must be smaller in size?

Answer :   
Output image


Q8. 
A rate distortion function is a

Answer :   
Convex function


Q9. 
Digital signals are easy for

Answer :   
1. Storage
2. Handling
3. Time dilation


Q10. 
In symmetric key cryptosystem, who knows the key?

Answer :  
Sender & Receiver






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