dc

8.C
9.D
10.D
11.A
Unit 2
CHOOSE THE CORRECT ANSWER
1. Information rate of a source is
(a) maximum when the source is continuous
(b) the entropy of the source measured in bits/message
(c) a measure of the uncertainty of the communication system
(d) the entropy of the source measured in bits/sec.
2. A Field is
(a) a group with 0 as the multiplicative identity for its members
(b) a group with 0 as the additive inverse for its members
(c) a group with 1 as the additive identity for its members
(d) an Abelian group under addition
3.Under error free reception, the syndrome vector computed for the received cyclic code
word consists of
(a) all ones
(b) alternate0‘s and1‘s starting with a 0
(c) all zeros
(d) alternate 1‘s and 0‘sstarting with a 1
4. The Memory length of a convolutional encoder is 3. If a 5 bit message sequence is applied
As The Input For The Encoder, Then Forth E last Message Bit To Come Out of the encoder,
The number of extra zeros to be applied to the encoder is
(a) 5
(b) 4
(c) 3