IBM C7020-230 Actual Free Exam Questions & Community Discussion

Exam Code/Number: C7020-230
Exam Name/Title: IBM Watson V3 Application Development
Certification Provider: IBM
Corresponding Certification: IBM Certified Application Developer-Watson V3

Exam Questions: 65
Updated On: Jun 02, 2026

Question #22

Which type of learning do regression, support vector machines, and Bayesian classifiers typically fall under?

A. unsupervised learning

B. supervised learning

C. reinforcement learning

D. cognitive learning

Discussion 0

Correct Answer: B Vote an answer

Question #23

Built into the IBM Watson Discovery service is the Watson Discovery News data set.
How is this collection different from other collections?

A. Documents from the Watson Discovery News collection can be ingested as sample documents to better configure a private collection.

B. The Watson Discovery News configuration and documents cannot be adjusted.

C. The Watson Discovery News collection is specific to the company news domain, whereas a collection is specific to a domain.

D. The Watson Discovery News data set and a private collection can be queried with a single query call.

Discussion 0

Correct Answer: A Vote an answer

Question #24

What combination of three cognitive capabilities are applicable for a physician advisor?
(Choose three.)

A. structured data analytics

B. sentiment analysis

C. text classification

D. keyword extraction

E. emotion analysis

F. entity extraction

Discussion 0

Correct Answer: C,D,F Vote an answer

Question #25

Which IBM Watson service is pre-trained and does not allow for any customization?

A. Tone Analyzer

B. Discovery

C. Natural Language Understanding

D. Speech to Text

Discussion 0

Correct Answer: C Vote an answer

Question #26

What is the purpose of the maximum alternatives parameter in the IBM Watson Speech to
Text service?

A. Accepts an integer that tells the service to return the n-best alternative hypotheses.

B. Reports hypotheses for acoustically similar alternatives for words of the input audio.

C. Represents the intermediate hypotheses of a transcription that are likely to change before the service returns the final result.

D. Accepts a Boolean value that tells the service whether to provide confidence measures for the words of the transcription.

Discussion 0

Correct Answer: A Vote an answer

Question #27

What is a method for measuring the accuracy of an unsupervised machine learning system?

A. changing training set size and averaging results

B. cross-validation tests

C. density estimation

D. using a confusion matrix

Discussion 0

Correct Answer: B Vote an answer

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Question #28

In neural networks, which method enables a developer to obtain the output and compare it with the real value to get the error?

A. Cognitive Propagation

B. Answer Propagation

C. Forward Propagation

D. Back Propagation

Discussion 0

Correct Answer: C Vote an answer

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