IBM C7020-230 問題集

質問 1：
Does an application that consumes an IBM Watson service need to be hosted on IBM Bluemix?
A. No, any application framework supporting standard REST API invocation can consume an Watson service.
B. Yes, the networking bindings require that the entire application and Watson service run on Bluemix.
C. Yes, Watson services are not visible to runtimes running outside of the Bluemix environment.
D. No, Bluemix facilities are not required for either the application or for working with the service.
正解：B

質問 2：
In the context of machine learning, what is overfitting?
A. Overfitting is the creation of a model that is too general, so it performs well on just about every test that is run against it.
B. Overfitting is an artificially accurate model and can occur when the test data is too similar to the training data.
C. Overfitting is the creation of a statistical model that describes noise instead of the underlying relationship.
D. Overfitting is the creation of an imprecise model which is the result of only using training data without using any validation data.
正解：B

質問 3：
A Marketing manager would like to analyze and better understand how people feel about the new brand released last week and use this new knowledge to adjust the campaign message for obtaining higher rate of positive sentiment.
Which IBM Watson service will help her to best accomplish this goal?
A. Natural Language Understanding (Sentiment)
B. Natural Language Understanding (Keywords)
C. Personality Insights
D. Discovery
正解：A

質問 4：
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?
A. The system is equally reliable for classifying any one of the eight logo types 78% of the time.
B. The system has 78% precision and recall.
C. The accuracy of the system for any one class cannot be determined.
D. The system has a precision of 78% and a recall of 22%.
正解：A

質問 5：
How can a developer prevent IBM Bluemix from logging data in an API request to an IBM Watson service?
A. Disable training from in the IBM Bluemix dashboard.
B. Set a header parameter called X-Watson-Learning-Opt-Out with the value true in the
HTTP request.
C. Set a header parameter called X-Stop-Training-Watson to true in the HTTP request.
D. Pass a parameter called DisableTraining=false in the API request.
正解：B

質問 6：
Which IBM Watson Natural Language Understanding service APIs would be best suited for identifying the names of persons or organizations in unstructured text documents?
A. Keywords
B. Entities
C. Taxonomy
D. Concepts
正解：B