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IT - Practice part

Beschreibung

Information Theory Quiz am IT - Practice part, erstellt von Csse 1502 am 14/05/2018.
Csse 1502
Quiz von Csse 1502, aktualisiert more than 1 year ago
Csse 1502
Erstellt von Csse 1502 vor fast 6 Jahre
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Zusammenfassung der Ressource

Frage 1

Frage
A card is drawn from a pack of 52 cards. The probability of getting a king of heart is
Antworten
  • 1/26
  • 1/52
  • 1/13
  • 2/13

Frage 2

Frage
A card is drawn from a pack of 52 cards. The probability of getting a queen or a king of heart is
Antworten
  • 1/52
  • 1/26
  • 1/13
  • 2/13

Frage 3

Frage
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 001?
Antworten
  • 101
  • 010
  • 001
  • None

Frage 4

Frage
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combinat
Antworten
  • 101
  • 01
  • 100
  • None

Frage 5

Frage
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 000?
Antworten
  • 010
  • 101
  • 000
  • None

Frage 6

Frage
51. Code has dmin = 9. How many errors can be corrected by this code?
Antworten
  • 5
  • 7
  • 4
  • 8

Frage 7

Frage
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 111?
Antworten
  • 101
  • 010
  • 111
  • None

Frage 8

Frage
52. Code has dmin = 9. How many errors can be detected by this code?
Antworten
  • 7
  • 9
  • 8
  • 4

Frage 9

Frage
57. Determine the Hamming distance for code that can detect 3 errors and correct 2 errors.
Antworten
  • 6
  • 5
  • 7
  • 9

Frage 10

Frage
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 011?
Antworten
  • 010
  • 101
  • 011
  • None

Frage 11

Frage
58. Determine the Hamming distance for code that can detect 3 errors and correct 1 errors.
Antworten
  • 5
  • 4
  • 6
  • 8

Frage 12

Frage
A code has two allowable combinations 101 and 010. What is the allowable combination for the error combination 110?
Antworten
  • 010
  • 101
  • 110
  • None

Frage 13

Frage
59. Determine the Hamming distance for code that can detect 5 errors and correct 3 errors.
Antworten
  • 9
  • 8
  • 10
  • 14

Frage 14

Frage
A fair coin is tossed four times, the probability of getting four heads is
Antworten
  • 1/4
  • 1/16
  • 1
  • 1/2

Frage 15

Frage
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
Antworten
  • 2.1 bit
  • 1.9 bit
  • 2.0 bit
  • 8.0 bit

Frage 16

Frage
60. Encode a string "0000" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0000001
  • 0000111
  • 0000000
  • 0000101

Frage 17

Frage
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
Antworten
  • 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

Frage 18

Frage
61. Encode a string "0001" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0001010
  • 0001001
  • 0001011
  • 0001111

Frage 19

Frage
Bag contain 10 black and 20 white balls, One ball is drawn at random. What is the probability that ball is white
Antworten
  • 1
  • 2/3
  • 1/3
  • 4/3

Frage 20

Frage
62. Encode a string "0010" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0010010
  • 0010111
  • 0010110
  • 0010100

Frage 21

Frage
Calculate the code rate for Hamming (15,11) code
Antworten
  • 1
  • 0,73
  • 0,571
  • 0,839

Frage 22

Frage
63. Encode a string "0011" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0011100
  • 0011001
  • 0011101
  • 0011111

Frage 23

Frage
64. Encode a string "0100" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0100011
  • 0100110
  • 0100111
  • 0100101

Frage 24

Frage
Calculate the code rate for Hamming (31,26) code
Antworten
  • 1
  • 0,839
  • 0,733
  • 0,571

Frage 25

Frage
65. Encode a string "0101" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0101101
  • 0101000
  • 0101100
  • 0101110

Frage 26

Frage
Calculate the code rate for Hamming (7,4) code
Antworten
  • 1
  • 0,571
  • 0,733
  • 0,839

Frage 27

Frage
Calculate the efficiency of the language if it has 32 letters and its I average is 1 bit.
Antworten
  • 0,8
  • 0,2
  • 5
  • 1

Frage 28

Frage
66. Encode a string "0110" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0110101
  • 0110011
  • 0110001
  • 0110000

Frage 29

Frage
Calculate the redundancy of the language if it has 32 letters and its I average is 1 bit.
Antworten
  • 0,8
  • 0,2
  • 5
  • 1

Frage 30

Frage
Code has dmin = 1. How many errors can be corrected by this code?
Antworten
  • 2
  • 3
  • 0
  • 1

Frage 31

Frage
67. Encode a string "0111" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 0111110
  • 0111000
  • 0111010
  • 0111011

Frage 32

Frage
Code has dmin = 1. How many errors can be detected by this code?
Antworten
  • 2
  • 3
  • 0
  • 1

Frage 33

Frage
68. Encode a string "1000" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1000111
  • 1000100
  • 1000101
  • 1000001

Frage 34

Frage
Code has dmin = 10. How many errors can be detected by this code?
Antworten
  • 4
  • 8
  • 9
  • 10

Frage 35

Frage
Code has dmin = 11. How many errors can be corrected by this code?
Antworten
  • 11
  • 7
  • 5
  • 10

Frage 36

Frage
69. Encode a string "1001" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1001111
  • 1001010
  • 1001110
  • 1001100

Frage 37

Frage
70. Encode a string "1010" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1010111
  • 1010001
  • 1010011
  • 1010010

Frage 38

Frage
71. Encode a string "1011" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1011100
  • 1011010
  • 1011000
  • 1011001

Frage 39

Frage
72. Encode a string "1100" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1100110
  • 1100000
  • 1100010
  • 1100011

Frage 40

Frage
73. Encode a string "1101" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1101101
  • 1101011
  • 1101001
  • 1101000

Frage 41

Frage
74. Encode a string "1110" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1110000
  • 1110101
  • 1110100
  • 1110110

Frage 42

Frage
75. Encode a string "1111" with Hamming (7,4) code using the following structure (i1, i2, i3, i4, r1, r2, r3)
Antworten
  • 1111110
  • 1111011
  • 1111111
  • 1111101

Frage 43

Frage
76. Find the information amount of a symbol from the language with total number of symbols n = 18.
Antworten
  • I = log218
  • I = log182
  • I = 18 * log218
  • I = 18 * log182

Frage 44

Frage
83. If a card is chosen from a pack of 52 cards, what is the probability of getting a five or a seven?
Antworten
  • 4/52
  • 8/52
  • 1/26
  • 1/169

Frage 45

Frage
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?
Antworten
  • 2/3
  • 8/21
  • 3/7
  • 9/22

Frage 46

Frage
87. In a throw of dice what is the probability of getting number greater than 5.
Antworten
  • 1/3
  • 1/6
  • 1/5
  • 1

Frage 47

Frage
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)
Antworten
  • i1
  • i2
  • i3
  • i4

Frage 48

Frage
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)
Antworten
  • i4
  • i1
  • i2
  • r2

Frage 49

Frage
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)
Antworten
  • r2
  • r1
  • r3
  • i3

Frage 50

Frage
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)
Antworten
  • i1
  • i2
  • i3
  • i4

Frage 51

Frage
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,
Antworten
  • r3
  • r2
  • r1
  • no error
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