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.

You must be logged in to post a comment.

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.

You must be logged in to post a comment.

You must be logged in to post a comment.

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.

You must be logged in to post a comment.

You must be logged in to post a comment.

50. The output of the following combinational circuit is F.

The value of F is:- 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.

You must be logged in to post a comment.

You must be logged in to post a comment.

You must be logged in to post a comment.