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What is the primary difference between a data scientist and a data engineer?
Correct Answer: A
Detailed Answer in Step-by-Step Solution:
Objective: Differentiate data scientist vs. data engineer roles.
Define Roles:
Data Engineer: Builds pipelines, prepares data.
Data Scientist: Analyzes data, builds models.
Evaluate Options:
A: Engineer preps, scientist analyzes—Correct division.
B: Reverses roles—Incorrect.
C: Overlaps roles—Scientist doesn’t typically build pipelines.
D: Misaligns—Analyst isn’t the focus.
Reasoning: A reflects standard role separation.
Conclusion: A is correct.
OCI documentation notes: “Data engineers focus on collecting and preparing data through pipelines, while data scientists analyze it to derive insights and build models.” A aligns, B inverts, C overcomplicates, and D shifts focus—only A is accurate.
Oracle Cloud Infrastructure Data Science Documentation, " Roles in Data Science " .
Which Oracle Data Safe feature minimizes the amount of personal data and allows internal test, development, and analytics teams to operate with reduced risk?
Correct Answer: C
Detailed Answer in Step-by-Step Solution:
Objective: Identify the Data Safe feature that reduces personal data exposure.
Understand Data Safe: Secures sensitive data in OCI databases.
Evaluate Options:
A: Encryption—Protects data, doesn’t minimize it.
B: Assessment—Identifies risks, doesn’t alter data.
C: Masking—Obfuscates personal data (e.g., SSNs)—correct.
D: Discovery—Locates sensitive data, doesn’t reduce it.
E: Auditing—Tracks access, doesn’t minimize data.
Reasoning: Masking replaces sensitive data, reducing risk for teams—fits goal.
Conclusion: C is correct.
OCI documentation states: “Data masking (C) in Data Safe transforms sensitive data into anonymized versions, minimizing exposure for test, dev, and analytics use.” A protects, B assesses, D finds, E audits—only C reduces data per OCI’s Data Safe features.
Oracle Cloud Infrastructure Data Safe Documentation, " Data Masking Overview " .
When preparing your model artifact to save it to the Oracle Cloud Infrastructure (OCI) DataScience model catalog, you create a score.py file. What is the purpose of the score.py file?
Correct Answer: B
Detailed Answer in Step-by-Step Solution:
Objective: Define the role of score.py in OCI model artifacts.
Understand Artifacts: score.py is key for deployment runtime.
Evaluate Options:
A: Infra config—Handled by OCI settings, not score.py.
B: Inference logic—Correct; runs load_model(), predict().
C: Scaling—Set in deployment, not score.py.
D: Dependencies—In runtime.yaml, not score.py.
Reasoning: B aligns with score.py’s execution role.
Conclusion: B is correct.
OCI documentation states: “score.py (B) contains the inference logic, including functions to load the model and predict outputs, executed by the deployment endpoint.” A, C, and D are managed elsewhere—only B matches OCI’s design.
Oracle Cloud Infrastructure Data Science Documentation, " Model Artifact - score.py " .
You are a data scientist trying to load data into your notebook session. You understand that Accelerated Data Science (ADS) SDK supports loading various data formats. Which of the following THREE are ADS-supported data formats?
Correct Answer: A
Detailed Answer in Step-by-Step Solution:
Objective: Identify three data formats supported by ADS SDK for loading data.
Understand ADS SDK: Facilitates data loading into notebook sessions via DatasetFactory.
Evaluate Options:
A. DOCX: Not natively supported—requires conversion (e.g., to text).
B. Pandas DataFrame: Supported—core format for data manipulation in ADS.
C. JSON: Supported—common structured data format.
D. Raw Images: Not directly supported—image data needs preprocessing (e.g., via Vision).
E. XML: Supported—parseable structured format.
Reasoning: ADS focuses on tabular/structured data—B, C, E align; A and D require external handling.
Conclusion: B, C, E are correct.
OCI documentation states: “ADS SDK’s DatasetFactory supports loading data from formats like Pandas DataFrames (B), JSON (C), and XML (E), enabling easy integration into notebook sessions.” DOCX (A) isn’t natively handled, and raw images (D) require preprocessing outside ADS—B, C, E match the supported list.
Oracle Cloud Infrastructure ADS SDK Documentation, " Supported Data Formats " .
You are a researcher who requires access to large datasets. Which OCI service would you use?
Correct Answer: D
Detailed Answer in Step-by-Step Solution:
Objective: Find the OCI service for accessing large public datasets.
Evaluate Options:
A: Oracle Databases—General-purpose, not dataset-focused.
B: ADW—Analytics warehouse, not a dataset repository.
C: OCI Data Science—ML platform, not a dataset provider.
D: Oracle Open Data—Free, public datasets (e.g., geospatial).
Reasoning: Open Data provides pre-existing large datasets for research.
Conclusion: D is correct.
OCI documentation states: “Oracle Open Data provides free access to large, curated datasets, such as geospatial data, ideal for researchers.” Databases (A) and ADW (B) are for storage/analytics, Data Science (C) is for ML—not datasets—only Open Data (D) fits.
Oracle Cloud Infrastructure Open Data Documentation, " Overview " .