Q. : 1 In _____ coding, we divide our message into blocks , each of k bits , called ___.
1) block; block words
2) linear; data words
3) block; data words
4) All the above
5) none of the above
Q. : 2 We add r redundant bits to each block to make the length n = k + r. The resulting n-bit blocks are called_________.
1) data words
2) block words
3) code words
4) All the above
5) none of the above
Q. : 3 The ________ between two words is the number of differences between corresponding bits .
1) Hamming code
2) Hamming distance
3) Hamming rule
4) All the above
5) none of the above
Q. : 4 To guarantee the detection of up to 5 errors in all cases , the minimum Hamming distance in a block code must be _______.
1) 5
2) 6
3) 11
4) All the above
5) None of these
Q. : 6 . ________ is a type of trans mission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal.
1) Attenuation
2) Distortion
3) Noise
4) Decibel
5) None of these
Q. : 7 ________ is a type of trans mission impairment in which an outside source such as cross talk corrupts a signal.
1) Attenuation
2) Distortion
3) Noise
4) Decibel
5) None of these
Q. : 8 When propagation s peed is multiplied by propagation time, we get the ________.
1) throughput
2) wavelength of the signal
3) dis tortion factor
4) distance a signal or bit has traveled
5) None of these
Q. : 9 Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A.
1) one-half
2) twice
3) the same as
4) indeterminate from
5) None of these
Q. : 10 A sine wave is ________.
1) periodic and continuous
2) aperiodic and continuous
3) periodic and discrete
4) aperiodic and discrete
5) None of these
Answer:-
Q. 1 (3) | Q. 2 (3) | Q. 3 (2) | Q. 4 (2) | Q. 5 (2) |
Q. 6 (2) | Q. 7 (3) | Q. 8 (4) | Q. 9 (2) | Q. 10 (1) |
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