PREVIOUS YEAR SOLVED PAPERS - November 2017 Paper 2
46. Which of the following is not a Clustering method?
- Option : C
- Explanation : k-means clustering is a method of vector quantization, originally from signal processing, that is popular for cluster analysis in data mining. Self-Organizing Map Self Organizing Map (SOM) provides a data visualization technique. SOM also represents clustering concept by grouping similar data together. k-nearest neighbors algorithm (k-NN) is a non-parametric method used for classification and regression. Agglomerative hierarchical clustering is a bottom-up clustering method where clusters have sub-clusters, which in turn have sub-clusters, etc. Option (C) is correct.
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47. Which of the given wireless technologies used in IoT, consumes the least amount of power?
- Option : B
- Explanation : Internet of things(IoT) uses short range communication technology - Bluetooth. It’s an ultra low energy wireless technology for IOT devices which consumes the smallest amount of power in comparison to the already existing Bluetooth networking standards. So, option (B) is correct.
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- Option : C
- Explanation : According to Amdahl's law speed up for infinite number of process: S = 1 / (1-P) where p is parallel part of program Given, sequential part of program is 5%. So parallel part of the program (P) = 1 - sequential part = 1 - 0.05 (or 5%) = 0.95 (or 95%) Now S = 1 / (1-P) ie S = 1 / (1-0.95) S = 1 / 0.05 S = 20 So, option (C) is correct.
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49. Negation of the proposition ∃ x H(x) is: (1) ∃x ¬ H(x) (2) ∀x ¬ H(x) (3) ∀x H(x) (4) ¬ x H(x)
- Option : B
- Explanation : ince logic says that there exist some x for which H(x) is true, So the negation for this will be for all x H(x) is not true. We can write it: ¬∃xH(x) =∀x¬H(x) So, option (B) is correct.
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50. The output of the following combinational circuit is F.
- Option : B
- Explanation : We know that (A+B)(A+C) = A + BC ON the basis of Given question OR gates will produce output: (P1+P'2+P'3) (P1+P'2+P3) (P1+P2+P3) AND gate will take all three input produced by OR gate and generate (P1 + P'2P'3) as output.
So, option (B) is correct.
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