13741110
Pregunta 1
Pregunta
A card is drawn from a pack of 52 cards. The probability of getting a king of heart is
Respuesta
-
1/26
-
1/52
-
1/13
-
2/13
Pregunta 2
Pregunta
A card is drawn from a pack of 52 cards. The probability of getting a queen or a king of heart is
Respuesta
-
1/52
-
1/26
-
1/13
-
2/13
Pregunta 3
Pregunta
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 001?
Respuesta
-
101
-
010
-
001
-
None
Pregunta 4
Pregunta
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combinat
Respuesta
-
101
-
01
-
100
-
None
Pregunta 5
Pregunta
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 000?
Respuesta
-
010
-
101
-
000
-
None
Pregunta 6
Pregunta
51. Code has dmin = 9. How many errors can be corrected by this code?
Respuesta
-
5
-
7
-
4
-
8
Pregunta 7
Pregunta
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 111?
Respuesta
-
101
-
010
-
111
-
None
Pregunta 8
Pregunta
52. Code has dmin = 9. How many errors can be detected by this code?
Respuesta
-
7
-
9
-
8
-
4
Pregunta 9
Pregunta
57. Determine the Hamming distance for code that can detect 3 errors and correct 2 errors.
Respuesta
-
6
-
5
-
7
-
9
Pregunta 10
Pregunta
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 011?
Respuesta
-
010
-
101
-
011
-
None
Pregunta 11
Pregunta
58. Determine the Hamming distance for code that can detect 3 errors and correct 1 errors.
Respuesta
-
5
-
4
-
6
-
8
Pregunta 12
Pregunta
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 110?
Respuesta
-
010
-
101
-
110
-
None
Pregunta 13
Pregunta
59. Determine the Hamming distance for code that can detect 5 errors and correct 3 errors.
Respuesta
-
9
-
8
-
10
-
14
Pregunta 14
Pregunta
A fair coin is tossed four times, the probability of getting four heads is
Respuesta
-
1/4
-
1/16
-
1
-
1/2
Pregunta 15
Pregunta
A Huffman code is a = 1, b = 000, c = 001, d = 01. Probabilities are p(a) = 0.4, p(b) = 0.1, p(c) = 0.2, p(d) = 0.3. The average length of codewords q is
Respuesta
-
2.1 bit
-
1.9 bit
-
2.0 bit
-
8.0 bit
Pregunta 16
Pregunta
60. Encode a string "0000" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0000001
-
0000111
-
0000000
-
0000101
Pregunta 17
Pregunta
An alphabet consist of the letters a, b, c and d. The probability of occurrence is \n p(a) = 0.4, p(b) = 0.1, p(c) = 0.2 and p(d) = 0.3. The Huffman code is
Respuesta
-
a=0,b=111,c=11,d=101
-
a=0,b=110,c=111,d=10
-
a=0,b=11,c=10,d=111
-
a=01,b=111,c=110,d=10
Pregunta 18
Pregunta
61. Encode a string "0001" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0001010
-
0001001
-
0001011
-
0001111
Pregunta 19
Pregunta
Bag contain 10 black and 20 white balls, One ball is drawn at random. What is the probability that ball is white
Respuesta
-
1
-
2/3
-
1/3
-
4/3
Pregunta 20
Pregunta
62. Encode a string "0010" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0010010
-
0010111
-
0010110
-
0010100
Pregunta 21
Pregunta
Calculate the code rate for Hamming (15,11) code
Respuesta
-
1
-
0,73
-
0,571
-
0,839
Pregunta 22
Pregunta
63. Encode a string "0011" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0011100
-
0011001
-
0011101
-
0011111
Pregunta 23
Pregunta
64. Encode a string "0100" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0100011
-
0100110
-
0100111
-
0100101
Pregunta 24
Pregunta
Calculate the code rate for Hamming (31,26) code
Respuesta
-
1
-
0,839
-
0,733
-
0,571
Pregunta 25
Pregunta
65. Encode a string "0101" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0101101
-
0101000
-
0101100
-
0101110
Pregunta 26
Pregunta
Calculate the code rate for Hamming (7,4) code
Respuesta
-
1
-
0,571
-
0,733
-
0,839
Pregunta 27
Pregunta
Calculate the efficiency of the language if it has 32 letters and its I average is 1 bit.
Respuesta
-
0,8
-
0,2
-
5
-
1
Pregunta 28
Pregunta
66. Encode a string "0110" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0110101
-
0110011
-
0110001
-
0110000
Pregunta 29
Pregunta
Calculate the redundancy of the language if it has 32 letters and its I average is 1 bit.
Respuesta
-
0,8
-
0,2
-
5
-
1
Pregunta 30
Pregunta
Code has dmin = 1. How many errors can be corrected by this code?
Respuesta
-
2
-
3
-
0
-
1
Pregunta 31
Pregunta
67. Encode a string "0111" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
0111110
-
0111000
-
0111010
-
0111011
Pregunta 32
Pregunta
Code has dmin = 1. How many errors can be detected by this code?
Respuesta
-
2
-
3
-
0
-
1
Pregunta 33
Pregunta
68. Encode a string "1000" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1000111
-
1000100
-
1000101
-
1000001
Pregunta 34
Pregunta
Code has dmin = 10. How many errors can be detected by this code?
Respuesta
-
4
-
8
-
9
-
10
Pregunta 35
Pregunta
Code has dmin = 11. How many errors can be corrected by this code?
Respuesta
-
11
-
7
-
5
-
10
Pregunta 36
Pregunta
69. Encode a string "1001" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1001111
-
1001010
-
1001110
-
1001100
Pregunta 37
Pregunta
70. Encode a string "1010" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1010111
-
1010001
-
1010011
-
1010010
Pregunta 38
Pregunta
71. Encode a string "1011" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1011100
-
1011010
-
1011000
-
1011001
Pregunta 39
Pregunta
72. Encode a string "1100" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1100110
-
1100000
-
1100010
-
1100011
Pregunta 40
Pregunta
73. Encode a string "1101" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1101101
-
1101011
-
1101001
-
1101000
Pregunta 41
Pregunta
74. Encode a string "1110" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1110000
-
1110101
-
1110100
-
1110110
Pregunta 42
Pregunta
75. Encode a string "1111" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
1111110
-
1111011
-
1111111
-
1111101
Pregunta 43
Pregunta
76. Find the information amount of a symbol from the language with total number of symbols n = 18.
Respuesta
-
I = log218
-
I = log182
-
I = 18 * log218
-
I = 18 * log182
Pregunta 44
Pregunta
83. If a card is chosen from a pack of 52 cards, what is the probability of getting a five or a seven?
Respuesta
-
4/52
-
8/52
-
1/26
-
1/169
Pregunta 45
Pregunta
84. In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither blue nor green?
Respuesta
-
2/3
-
8/21
-
3/7
-
9/22
Pregunta 46
Pregunta
87. In a throw of dice what is the probability of getting number greater than 5.
Respuesta
-
1/3
-
1/6
-
1/5
-
1
Pregunta 47
Pregunta
96. Specify the error position in the string "0000110", if the initial string was encoded with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
i1
-
i2
-
i3
-
i4
Pregunta 48
Pregunta
97. Specify the error position in the string "0001110", if the initial string was encoded with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
i4
-
i1
-
i2
-
r2
Pregunta 49
Pregunta
98. Specify the error position in the string "0011001", if the initial string was encoded with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
r2
-
r1
-
r3
-
i3
Pregunta 50
Pregunta
99. Specify the error position in the string "0101011", if the initial string was encoded with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Respuesta
-
i1
-
i2
-
i3
-
i4
Pregunta 51
Pregunta
100. Specify the error position in the string "0101110", if the initial string was encoded with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1,
Respuesta
-
r3
-
r2
-
r1
-
no error
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