ThatQuiz Βιβλιοθήκη δοκιμασιών Εκτέλεση της δοκιμασίας τώρα
Information theory - εξέταση
Συνεισφορά από: Haynes
  • 1. What are pseudorandom number generators in computer language libraries almost universally unsuited for?
A) Cryptographic use
B) Seismic exploration
C) Bioinformatics
D) Gambling
  • 2. What must cryptographically secure pseudorandom number generators have to work as intended?
A) Random seeds external to the software
B) High Shannon entropy
C) Analog processing methods
D) Integrated neural clusters
  • 3. How can random seeds for pseudorandom generators be obtained?
A) By using semiotic signs
B) Via extractors
C) Through Shannon entropy
D) Via digital noise
  • 4. What is the measure of sufficient randomness in extractors?
A) Free energy
B) Dynamic core hypothesis
C) Effective information
D) Min-entropy
  • 5. Min-entropy is related to Shannon entropy through which other type of entropy?
A) Rényi entropy
B) Thermal entropy
C) Conditional entropy
D) Algorithmic entropy
  • 6. Where is Rényi entropy also used?
A) In minimizing free energy
B) In seismic oil exploration
C) In semiotic code control
D) In evaluating randomness in cryptographic systems
  • 7. Does a random variable with high Shannon entropy guarantee it is satisfactory for use in an extractor?
A) Only in cryptographic systems
B) No
C) Only for pseudorandom numbers
D) Yes
  • 8. What was one early commercial application of information theory?
A) Black hole analysis
B) Search for extraterrestrial intelligence
C) Seismic oil exploration
D) Bioinformatics
  • 9. What did information theory make it possible to do in seismic exploration?
A) Strip off and separate unwanted noise from the desired seismic signal
B) Generate secure pseudorandom numbers
C) Minimize free energy in the brain
D) Decode dominant social messages
  • 10. What methods offered a major improvement of resolution and image clarity over previous analog methods in seismic work?
A) Extractors and Rényi entropy
B) Information theory and digital signal processing
C) Free energy principles
D) Cryptographically secure pseudorandom number generators
  • 11. Which semioticians considered Charles Sanders Peirce as having created a theory of information?
A) Gerald Edelman and Giulio Tononi
B) Doede Nauta and Winfried Nöth
C) Umberto Eco and Ferruccio Rossi-Landi
D) Karl J. Friston and Andrey Kolmogorov
  • 12. How did Doede Nauta define semiotic information theory?
A) The separation of unwanted noise from seismic signals
B) The measurement of sufficient randomness in extractors
C) The study of the internal processes of coding, filtering, and information processing
D) The minimization of free energy in a self-organized system
  • 13. Which semioticians used concepts like redundancy and code control to explain ideology?
A) Gerald Edelman and Karl J. Friston
B) Umberto Eco and Ferruccio Rossi-Landi
C) C.E. Shannon and R.V.L. Hartley
D) Doede Nauta and Winfried Nöth
  • 14. In semiotic explanations of ideology, how does a dominant social class emit its message?
A) By applying the free energy principle
B) By using signs that exhibit a high degree of redundancy
C) Through digital signal processing of seismic signals
D) By utilizing cryptographically secure pseudorandom seeds
  • 15. Where have quantitative information theoretic methods been applied in cognitive science?
A) To explore seismic oil deposits
B) To analyze the integrated process organization of neural information
C) To extract random numbers for cryptography
D) To study black holes and bioinformatics
  • 16. What neurological problem is linked to the analysis of neural information organization?
A) The problem of algorithmic complexity
B) The issue of seismic noise filtering
C) The binding problem in cognitive neuroscience
D) The paradox of extraterrestrial intelligence
  • 17. Whose functional clustering model and dynamic core hypothesis define an information-theoretical measure in neural processing?
A) R.V.L. Hartley and C.E. Shannon
B) Gerald Edelman and Giulio Tononi
C) Doede Nauta and Winfried Nöth
D) Umberto Eco and Ferruccio Rossi-Landi
  • 18. What is Giulio Tononi's integrated information theory (IIT) of consciousness based on?
A) Seismic signal processing
B) Effective information
C) Min-entropy
D) Shannon entropy
  • 19. What underlies the definition of measures in the context of neural information organization?
A) Analog methods of data transmission
B) A high degree of redundancy in signs
C) A reentrant process organization
D) External cryptographic random seeds
  • 20. What does a reentrant process organization refer to?
A) The coding and filtering processes studied in semiotics
B) The synchronization of neurophysiological activity between groups of neuronal populations
C) The filtering of unwanted noise from desired seismic signals
D) The generation of pseudorandom numbers using extractors
  • 21. Whose free energy principle (FEP) states that every adaptive change leads to a minimization of free energy?
A) Charles Sanders Peirce
B) Giulio Tononi
C) Karl J. Friston
D) Gerald Edelman
  • 22. What type of system does the free energy principle apply to?
A) A dominant social class
B) A self-organized system
C) A cryptographic random number generator
D) An analog seismic receiver
  • 23. Along with the free energy principle, what other hypothesis is mentioned in relation to statistical methods in the brain?
A) The Bayesian brain hypothesis
B) The integrated information theory
C) The dynamic core hypothesis
D) The semiotic information theory
  • 24. Which field, aside from cryptography and seismology, has applications in information theory?
A) Search for extraterrestrial intelligence
B) Alchemy
C) Astrology
D) Phrenology
  • 25. Which physical phenomenon is listed alongside extraterrestrial intelligence as having applications for information theory?
A) Seismic waves
B) Neural clusters
C) Black holes
D) Tectonic plates
  • 26. What life-science field is mentioned as having applications in information theory?
A) Biomechanics
B) Bioinformatics
C) Biophysics
D) Biochemistry
  • 27. What recreational activity is listed as an application of information theory?
A) Chess
B) Crosswords
C) Cipher creation
D) Gambling
  • 28. Who is listed in the history section alongside C.E. Shannon and Andrey Kolmogorov?
A) Doede Nauta
B) Gerald Edelman
C) R.V.L. Hartley
D) Umberto Eco
  • 29. Who is mentioned in the history section alongside R.V.L. Hartley and Andrey Kolmogorov?
A) C.E. Shannon
B) Winfried Nöth
C) Giulio Tononi
D) Ferruccio Rossi-Landi
  • 30. Who is listed in the history section alongside R.V.L. Hartley and C.E. Shannon?
A) Karl J. Friston
B) Charles Sanders Peirce
C) Winfried Nöth
D) Andrey Kolmogorov
  • 31. What is the historical figure H.P. Yockey associated with in the text?
A) Free energy principle
B) Dynamic core hypothesis
C) Integrated information theory
D) History of information theory
  • 32. What do physiological systems use information theory to exchange, process, and integrate as?
A) A brute force attack
B) A block cipher
C) A network
D) A single organ
  • 33. What do physiological systems generate alongside functions in health and disease?
A) Symmetric keys
B) Distinct physiological states
C) Information theory units
D) Unicity distances
  • 34. What does network cross-communication and regulation reveal within the organism?
A) How it occurs
B) Why it ceases permanently
C) How encryption keys are generated
D) Why brute force attacks succeed
  • 35. Which interactions are listed as applications of information-theoretic approaches in physiology?
A) Enigma machine interactions
B) Cryptographic interactions
C) One-time pad interactions
D) Cardio-respiratory interactions
  • 36. In what kind of environments is network physiology applied according to the text?
A) Underground bunker environments
B) Cryogenic laboratory environments
C) Simulated virtual environments
D) Extreme environments
  • 37. What was the name of Turing's information unit used in the Ultra project?
A) The byte
B) The bit
C) The shannon
D) The ban
  • 38. In which project was Turing's information unit used?
A) The Enigma project
B) The Venona project
C) The Ultra project
D) The Unicity project
  • 39. What German machine code was broken during World War II with the help of the ban?
A) One-time pad code
B) Lorenz cipher code
C) Enigma machine code
D) Symmetric key code
  • 40. What does information theory lead us to believe about keeping secrets?
A) It is much more difficult than it might first appear
B) It is extremely easy using symmetric keys
C) It is completely impossible under any circumstances
D) It requires no computational effort
  • 41. What kind of attack can break systems based on asymmetric or symmetric key algorithms?
A) An information-theoretic attack
B) A brute force attack
C) A network physiology attack
D) A conditional mutual attack
  • 42. What are symmetric key algorithms sometimes called?
A) Unicity distance algorithms
B) Asymmetric algorithms
C) One-time pads
D) Secret key algorithms
  • 43. What is an example of a commonly used method of symmetric key algorithms?
A) Bans
B) One-time pads
C) Transfer entropy
D) Block ciphers
  • 44. What must be used correctly even when applying information-theoretically secure methods?
A) Care
B) Transfer entropy
C) Brute force
D) Block ciphers
  • 45. Which project was able to crack the one-time pads of the Soviet Union?
A) The Enigma project
B) The Ultra project
C) The Venona project
D) The Network Physiology project
  • 46. In which type of data compression must the data be reconstructed exactly?
A) Lossy data compression
B) Channel coding
C) Rate-distortion theory
D) Lossless data compression
  • 47. What justifies the division of coding theory into compression and transmission?
A) Source-channel separation theorems
B) Channel resolvability
C) Pragmatic information
D) Rate-distortion theory
  • 48. What do source-channel separation theorems justify the use of as the universal currency for information?
A) Entropy
B) Distortion functions
C) Bits
D) Bytes
  • 49. What type of channel involves more than one transmitter?
A) The wiretap channel
B) The broadcast channel
C) The multiple-access channel
D) The relay channel
  • 50. What type of channel involves more than one receiver?
A) The relay channel
B) The wiretap channel
C) The multiple-access channel
D) The broadcast channel
  • 51. What type of channel involves intermediary helpers?
A) The broadcast channel
B) The relay channel
C) The multiple-access channel
D) The wiretap channel
  • 52. What should joint entropy not be confused with despite similar notation?
A) Cross-entropy
B) Kullback-Leibler divergence
C) Mutual information
D) Conditional entropy
  • 53. What type of space does the vector give values in for joint entropy?
A) Product space
B) Vector space
C) Metric space
D) Euclidean space
  • 54. What is the formula for self-information I(pi)?
A) 1 / pi
B) log2(pi)
C) -log2(pi)
D) -ln(pi)
  • 55. What is the entropy H relative to the surprisal of all possible symbols?
A) The geometric mean
B) The weighted average
C) The median
D) The maximum value
  • 56. If 1000 bits are transmitted and each is independently and equally likely to be 0 or 1, how much information has been transmitted?
A) 2000 bits
B) 1000 shannons
C) No information
D) 1 shannon
  • 57. In what year was Claude Shannon's paper 'A Mathematical Theory of Communication' published?
A) 1948
B) 1939
C) 1952
D) 1960
  • 58. In what decade was information theory established and formalized?
A) 1930s
B) 1950s
C) 1940s
D) 1920s
  • 59. In what context was information theory initially formed?
A) Telecommunication
B) Molecular biology
C) Quantum computing
D) Artificial intelligence
  • 60. What is the entropy of a coin flip when you already know the outcome after it has landed?
A) 0.5 bits
B) 2 bits
C) Zero
D) 1 bit
  • 61. What is an example of source coding or data compression mentioned in the text?
A) Voyager missions
B) DSL
C) ZIP files
D) Compact discs
  • 62. What is an example of channel coding mentioned in the text?
A) ZIP files
B) DSL
C) Artificial intelligence
D) Mobile phones
  • 63. Whose success was crucially impacted by information theory regarding deep space missions?
A) Hubble telescope
B) Voyager missions
C) Curiosity rover
D) Apollo missions
  • 64. Which invention's success was crucially impacted by information theory?
A) Television
B) Compact disc
C) Steam engine
D) Radio
  • 65. What technology's feasibility was made possible by information theory?
A) Electric guitars
B) Airplanes
C) Automobiles
D) Mobile phones
  • 66. What modern developments were impacted by information theory alongside artificial intelligence?
A) The telegraph network
B) The postal service
C) The Internet
D) The printing press
  • 67. Which computational paradigm is listed alongside artificial intelligence as an application of information theory?
A) Cloud computing
B) Quantum computing
C) Optical computing
D) Distributed computing
  • 68. Which of the following artistic applications is mentioned as a use case for information theory?
A) Oil painting restoration
B) Architectural drafting
C) Art creation
D) Sculpture casting
  • 69. What specific musical topic is analyzed using information theory according to the text?
A) Musical instrument design
B) Acoustic room resonance
C) Vocal cord anatomy
D) Music
  • 70. Which philosophical field is listed at the end of the text as an application area of information theory?
A) Epistemology
B) Metaphysics
C) Ethics
D) Aesthetics
  • 71. Which historian rated Shannon's 1948 paper as the most important development of 1948?
A) Vannevar Bush
B) Harry Nyquist
C) Ralph Hartley
D) James Gleick
  • 72. In what year did Shannon outline some of his initial ideas in a letter to Vannevar Bush?
A) 1939
B) 1940
C) 1948
D) 1928
  • 73. To whom did Shannon write a letter outlining initial ideas of information theory in 1939?
A) Alan Turing
B) Ludwig Boltzmann
C) Vannevar Bush
D) James Gleick
  • 74. Who wrote the 1924 paper 'Certain Factors Affecting Telegraph Speed'?
A) Ralph Hartley
B) Harry Nyquist
C) Alan Turing
D) Claude Shannon
  • 75. What relation was given in Harry Nyquist's 1924 paper?
A) H = log Sn
B) W = K log m
C) PV = nRT
D) E = mc2
  • 76. What unit of information was sometimes called the hartley in honor of Ralph Hartley?
A) The bit
B) The decimal digit
C) The byte
D) The baud
  • 77. Who used similar ideas in 1940 as part of the statistical analysis of breaking German Enigma ciphers?
A) Alan Turing
B) Harry Nyquist
C) Claude Shannon
D) Ralph Hartley
  • 78. Who made important contributions connecting information-theoretic entropy and thermodynamic entropy in the 1960s?
A) Harry Nyquist
B) Vannevar Bush
C) James Gleick
D) Rolf Landauer
  • 79. What logarithmic base is the bit or shannon based on?
A) Natural logarithm
B) Binary logarithm
C) Common logarithm
D) Decimal logarithm
  • 80. What logarithmic base is the nat based on?
A) Common logarithm
B) Natural logarithm
C) Binary logarithm
D) Base-two logarithm
  • 81. What logarithmic base is the decimal digit based on?
A) Natural logarithm
B) Common logarithm
C) Binary logarithm
D) Base-e logarithm
  • 82. What does the maximum value of entropy represent?
A) The lowest possible information content
B) The most predictable state
C) The most unpredictable state
D) A deterministic sequence
  • 83. What logarithmic base measures entropy in bytes per symbol?
A) Base-e
B) Base-256
C) Base-10
D) Base-2
  • 84. What type of trial has two outcomes for the binary entropy function?
A) A logarithmic trial
B) An equiprobable trial
C) A Bernoulli trial
D) A Markov trial
  • 85. What is another name for conditional entropy?
A) Marginal entropy
B) Mutual information
C) Equivocation
D) Joint entropy
  • 86. What is another name for mutual information according to the text?
A) Pointwise mutual information
B) Transinformation
C) Log-likelihood ratio
D) Kullback-Leibler divergence
  • 87. In what field is mutual information particularly important for maximizing shared information between sent and received signals?
A) Thermodynamics
B) Macroeconomics
C) Communication
D) Quantum mechanics
  • 88. Mutual information can be expressed as the average of which divergence?
A) Euclidean distance
B) Kullback-Leibler divergence
C) Jensen-Shannon divergence
D) Mahalanobis distance
  • 89. With which statistical test is mutual information closely related in the context of contingency tables?
A) Mann-Whitney U test
B) Shapiro-Wilk test
C) Student's t-test
D) Log-likelihood ratio test
  • 90. What type of mathematical function is the KL divergence classified as?
A) Semi-quasimetric
B) Linear transformation
C) Inner product
D) Euclidean metric
  • 91. In the alternative interpretation involving Alice and Bob, who knows the true probability distribution p(x)?
A) Bob
B) Neither
C) Both
D) Alice
  • 92. According to the surprise interpretation, who will be more surprised on average upon seeing the value of X?
A) It is impossible to determine
B) Alice
C) Both will be equally surprised
D) Bob
  • 93. What type of set is X assumed to be when drawing a random number in the surprise interpretation?
A) A finite geometric set
B) An empty set
C) An infinite continuous set
D) A discrete set
  • 94. Does directed information apply to statistical physics?
A) Only in macroscopic mechanics
B) Yes
C) No
D) Only in quantum states
  • 95. What does the random process Xn consist of?
A) {Y1, Y2, ..., Y_n}
B) {X1, X2, ..., X_n}
C) {X0, X1, ..., X_{n-1}}
D) {X1, Y1, ..., X_n, Y_n}
  • 96. What do the two expressions for the rate give for stationary sources?
A) Completely different results
B) The same result
C) An undefined value
D) A result of zero
  • 97. How is the noise nature of the channel considered in the text?
A) A completely controllable variable
B) A negligible factor in modern systems
C) An inherent fixed property
D) An unpredictable random variable that changes constantly
  • 98. What is the crossover probability of a binary symmetric channel denoted as?
A) p
B) e
C) i
D) Hb
  • 99. What does a binary symmetric channel do to the input bit with probability p?
A) Flips the input bit
B) Erases the input bit
C) Delays the input bit
D) Duplicates the input bit
  • 100. What feature do many channels have in practice?
A) Memory
B) Ternary input
C) Gaussian noise
D) Zero capacity
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