1z0-1110-25 試験問題を無料オンラインアクセス

Which statement about resource principals is true?

• A.The Data Science service does not provide authentication via a notebook session's or job run's resource principal to access other OCI resources.
• B.A resource principal is not a secure way to authenticate to resources, compared to the OCI configuration and API key approach.
• C.When you authenticate using a resource principal, you need to create and manage credentials to access OCI resources.
• D.A resource principal is a feature of IAM that enables resources to be authorized principal actors.

You are working as a data scientist for a healthcare company. They decided to analyze the data to find patterns in a large volume of electronic medical records. You are asked to build a PySpark solution to analyze these records in a JupyterLab notebook. What is the order of recommended steps to develop a PySpark application in OCI Data Science?

• A.Launch a notebook session, configure core-site.xml, install a PySpark conda environment, develop your PySpark application, create a Data Flow application with the Accelerated Data Science (ADS) SDK
• B.Install a Spark conda environment, configure core-site.xml, launch a notebook session, create a Data Flow application with the Accelerated Data Science (ADS) SDK, develop your PySpark application
• C.Configure core-site.xml, install a PySpark conda environment, create a Data Flow application with the Accelerated Data Science (ADS) SDK, develop your PySpark application, launch a notebook session
• D.Launch a notebook session, install a PySpark conda environment, configure core-site.xml, develop your PySpark application, create a Data Flow application with the Accelerated Data Science (ADS) SDK

As a data scientist, you create models for cancer prediction based on mammographic images. The correct identification is very crucial in this case. After evaluating two models, you arrive at the following confusion matrix. Which model would you prefer and why?
* Model 1 has Test accuracy is 80% and recall is 70%
* Model 2 has Test accuracy is 75% and recall is 85%

• A.Model 2, because recall has more impact on predictions in this use case
• B.Model 1, because the test accuracy is high
• C.Model 1, because recall has lesser impact on predictions in this use case
• D.Model 2, because recall is high

Which statement about Oracle Cloud Infrastructure Multi-Factor Authentication (MFA) is NOT valid?

• A.An administrator can disable MFA for another user
• B.A user can register only one device to use for MFA
• C.Users must install a supported authenticator app on the mobile device they intend to register for MFA
• D.Users cannot disable MFA for themselves

You are a data scientist building a pipeline in the Oracle Cloud Infrastructure (OCI) Data Science service for your machine learning project. You want to optimize the pipeline completion time by running some steps in parallel. Which statement is true about running pipeline steps in parallel?

• A.Parallel steps cannot be run if they are completely independent of each other
• B.All pipeline steps are always run in parallel
• C.Steps in a pipeline can be run only sequentially
• D.Pipeline steps can be run in sequence or in parallel, as long as they create a directed acyclic graph (DAG)