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Share some IBM Certified Application Developer C7020-230 exam questions and answers below.
Which IBM Watson service is pre-trained and does not allow for any customization?
A. Natural Language Understanding
B. Speech to Text
C. Discovery
D. Tone Analyzer
Answer: A

How can a developer prevent IBM Bluemix from logging data in an API request to an IBM Watson service?
A. Set a header parameter called X-Stop-Training-Watson to true in the HTTP request.
B. Disable training from in the IBM Bluemix dashboard.
C. Pass a parameter called DisableTraining=false in the API request.
D. Set a header parameter called X-Watson-Learning-Opt-Out with the value true in the HTTP request.
Answer: D

Which statement best describes the unsupervised learning process when performing clustering on a large data set?
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.
B. A neural network is deployed in unsupervised mode to determine to which cluster a data point belongs.
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.
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.
Answer: D

Which actions depict configuring IBM Watson Discovery service collection?
A. Converting, enriching and normalizing sample data.
B. Switching from a default configuration to a custom configuration using uploaded personal data.
C. Testing which query methods result in accurate answers.
D. Determining how much space must be allocated to an environment.
Answer: A

In the context of a IBM Watson cognitive virtual agent, what type of input data can the IBM Watson Conversation service consume?
A. images
B. speech
C. string of text
D. audio
Answer: A

How is a training data set constructed from user questions for the IBM Watson Natural Language Classifier?
A. Group the questions into classes.
B. Use an XML formatted data set.
C. Upload documents with similar questions.
D. Create an intents index in a spreadsheet.
Answer: A

Which two Natural Language Processing artifacts are part of the Watson Knowledge Studio? (Choose two.)
A. mention detection
B. parsing rules
C. part-of-speech tagging
D. sentence tokenization
E. relation detection
Answer: D,E

Which statement best describes the unsupervised learning process when performing clustering on a large data set?
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.
B. A neural network is deployed in unsupervised mode to determine to which cluster a data point belongs.
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.
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.
Answer: D


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