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Home IBM C7020-230

IBM C7020-230 Exam Practice Questions (P. 1)

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Question #1
A system with a set of classifiers is trained to recognize eight different company logos from images. It is 78% accurate.
Without further information, which statement is true?
  1. A
    The system has 78% precision and recall.
  2. B
    The system has a precision of 78% and a recall of 22%.
  3. C
    The system is equally reliable for classifying any one of the eight logo types 78% of the time.
  4. D
    The accuracy of the system for any one class cannot be determined.

Correct Answer:
C
Reference:
https://books.google.com.pk/books?id=L1j3AwAAQBAJ&pg=PA66&lpg=PA66&dq=ibm+watson+precision+and
+recall&source=bl&ots=b96MxWy6PG&sig=Bap-4X_CxkeGzWoJp-iP5Fay__M&hl=en&sa=X&redir_esc=y#v=onepage&q=ibm%20watson%20precision%20and%
20recall&f=false

Question #2
A cognitive FAQ widget on a companys support portal allows users to ask questions related to the company and its products.
Which two IBM Watson services will create this pattern? (Choose two.)
  1. A
    Tradeoff Analytics
  2. B
    Natural Language Understanding service Semantic Roles API
  3. C
    Conversation
  4. D
    Discovery
  5. E
    Personality Insights

Correct Answer:
BC
Reference:
https://developer.ibm.com/watson/blog/2015/11/11/watson-question-and-answer-service-to-be-withdrawn/

Question #3
Which statement best describes the unsupervised learning process when performing clustering on a large data set?
  1. A
    The system understands the significance of the data points and a cognitive sub-process clusters the data, removing the need for a human supervisor.
  2. B
    A neural network is deployed in unsupervised mode to determine to which cluster a data point belongs.
  3. C
    Examples of data points and their associated cluster are fed into the system allowing it to learn and generalize for the rest of the data set.
  4. D
    Data points are compared at random and the differences between their features are used to determine whether they belong in the same cluster or not.

Correct Answer:
D

Question #4
Which two Natural Language Processing artifacts are part of the Watson Knowledge Studio? (Choose two.)
  1. A
    mention detection
  2. B
    parsing rules
  3. C
    part-of-speech tagging
  4. D
    sentence tokenization
  5. E
    relation detection

Correct Answer:
DE

Question #5
In the context of a IBM Watson cognitive virtual agent, what type of input data can the IBM Watson Conversation service consume?
  1. A
    images
  2. B
    speech
  3. C
    string of text
  4. D
    audio

Correct Answer:
A

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