Free IBM C7020-230 Practice Test & Real Exam Questions

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 16, 2026

Question #1

What is important when creating an IBM Watson Visual Recognition classifier?

A. Make sure training images are high resolution foe better accuracy.

B. Collect training images for the same classification that are very similar to each other.

C. Provide an approximately equal number of both positive and negative examples of pictures to train with.

D. Ensure use of only PNG formatted images.

Discussion 0

Correct Answer: C Vote an answer

Question #2

Where is the source code for the IBM Watson SDK located?

A. IBM Watson Developer Cloud repository on Github

B. IBM Watson Knowledge Center

C. IBM DeveloperWorks site

D. IBM Bluemix documentation

Discussion 0

Correct Answer: A Vote an answer

Question #3

Which IBM Watson service is trainable?

A. Document Conversion

B. Visual Recognition

C. Personality Insights

D. Tone Analyzer

Discussion 0

Correct Answer: B Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #4

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

A. Natural Language Understanding

B. Tone Analyzer

C. Discovery

D. Speech to Text

Discussion 0

Correct Answer: A Vote an answer

Question #5

When creating a new IBM Watson Visual Recognition classifier, what is the recommended minimum number of images that needs to be provided (for both the positive and negative example sets) in order to obtain the best results?

A. 500-1000

B. 150-200

C. 15-30

D. 1000-2000

Discussion 0

Correct Answer: B Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #6

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

A. changing training set size and averaging results

B. density estimation

C. using a confusion matrix

D. cross-validation tests

Discussion 0

Correct Answer: D Vote an answer

Explanation: Only visible for Pass4Leader members. You can sign-up / login (it's free).

Question #7

What is the purpose of the IBM Watson Visual Recognition REST API classify endpoint?

A. It turns a collection of images into structured data that can easily be indexed and queried.

B. It enables users to upload a set of images as a zip file for insight extraction.

C. It analyzes the uploaded images against classifiers.

D. It trains a new classifier on the uploaded image data.

Discussion 0

Correct Answer: A Vote an answer

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