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Quiz 21/11/25 -> Spreading Phenomena

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Consider the following well-known pathogens and the following time evolution graph of the fraction of infected individuals using the Susceptible-Infected-Susceptible Model (SIS): Disease Transmission R 0 SARS Airborne droplet 2-5 Polio Fecal-oral route 5-7 Measles Airborne 12-18 Which of the curves could represent the pathogens presented? A. f1 - SARS,  f2 - Polio,  f3 - Measles B. f1 - Measles,  f2 - SARS,  f3 - Polio C. f1 - Polio,  f2 - SARS,  f3 - Measles D. f1 - Measles,  f2 - Polio,  f3 - SARS E. None of the above Original idea by: Jhessica Silva

Quiz 07/11/25 -> Network Robustness

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A network suffered an attack on its largest hubs, transforming it into three disconnected components. Which of the following alternatives best represents the sequence of nodes attacked, with 1 being the first node attacked? A.  B.  C.  D.  E. None of the above Original idea by: Jhessica Silva

Quiz 24/10/25 -> Degree Correlations

Consider networks generated by the following models: Barabási-Albert model Erdős-Rényi model With regard to the degree correlation in these models, the generated networks are considered, respectively: A. Disassortative and Disassortative B. Disassortative and Neutral C. Neutral and Disassortative D. Neutral and Neutral E. None of the above Original idea by: Jhessica Silva

Quiz 03/10/25 -> Barabasi-Albert model

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Consider a network generated using the Barabasi-Albert model, whose sequence of node addition is A,B,C,D,E. Consider m=2 and that new nodes always connect to nodes with higher degrees. Which of the alternatives below represents a valid generated network? A.  B. C. D. E. None of the above Original idea by: Jhessica Silva

Quiz 19/09/25 -> Scale-Free

Consider the following networks: Network I   → γ = 3.01; 〈k〉 finite; 〈k2〉 finite Network II  → γ = 3.00; 〈k〉 finite; 〈k2〉 diverges Network III → γ = 2.00; 〈k〉 diverges; 〈k2〉 diverges Network IV → γ = 2.01; 〈k〉 finite; 〈k2〉 diverges Which of them are in the scale-free regime?  A. I and II B. II and IV C. III and IV D. I and III E. None of the above Original idea by: Jhessica Silva

Quiz 05/09/25 -> Random Networks

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Consider the following Cayley Trees, a symmetric tree whose internal nodes have the same number of links. I)      II)     III) IV) Which of them have an average degree equal to 4? A. I and II B. II and III C. III and IV D. I and IV E. None of the above Original idea by: Jhessica Silva

Quiz 22/08/25 -> Adjacency Matrix (class: 19/08/25)

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Consider the adjacency matrices A and B below, where A represents an undirected network and B represents a directed network.  Choose the alternative whose networks are the result of the matrices A and B, respectively. A.     B.  C.  D.    E. None of the above Original idea by: Jhessica Silva