Oracle 1Z0-1110-25 Practice Exam Questions & Answers

7 Free Questions Last reviewed October 27, 2026 Prepared & Reviewed by the ValidExamDumps Editorial Team

158 Practice Questions (Our Bank)
90 minutes Exam Duration
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Exam Facts

Oracle 1Z0-1110-25 Exam Details

Key details for this exam, checked against the published exam outline

Exam Code
1Z0-1110-25
Full Name
Oracle Cloud Infrastructure 2025 Data Science Professional
Issuing Body
Oracle
Question Format (Our Bank)
Multiple Choice
Delivery
Pearson VUE testing centers or online proctored
Practice Questions

Free 1Z0-1110-25 Practice Questions

Each question shows the correct answer and an explanation of why it is right

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Question 1 Domain 5 Use related OCI Services

You have created a model and want to use Accelerated Data Science (ADS) SDK to deploy the model. Where are the artifacts to deploy this model with ADS?

Correct Answer C
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Locate artifacts for ADS model deployment.

Understand ADS Deployment: Requires model artifacts (e.g., score.py) stored in OCI.

Evaluate Options:

A: Vault---Stores secrets, not models.

B: Depository---Not an OCI term.

C: Model Catalog---Stores models/artifacts for deployment---correct.

D: Artifactory---Not an OCI service.

Reasoning: Model Catalog is OCI's model repository for ADS.

Conclusion: C is correct.

OCI documentation states: ''ADS SDK deploys models from the Model Catalog, where trainedmodels and artifacts (e.g., score.py) are stored.'' Vault (A) is for secrets, B and D aren't real---only C supports ADS deployment.

: Oracle Cloud Infrastructure Data Science Documentation, 'ADS Model Deployment'.

Question 2 Domain 3 Implement end-to-end Machine Learning Lifecycle

You are working as a data scientist for a healthcare company. They decide 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 stepsto develop a PySpark application in Oracle Cloud Infrastructure (OCI) Data Science?

Correct Answer D
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Sequence steps for PySpark app development.

Steps:

Launch notebook: First---sets up environment.

Install PySpark conda: Second---adds Spark libraries.

Configure core-site.xml: Third---connects to data.

Develop app: Fourth---writes code.

Data Flow: Fifth---scales (optional).

Evaluate: D (1, 2, 3, 4, 5) matches this logical order.

Reasoning: Notebook first, then setup and coding.

Conclusion: D is correct.

OCI documentation states: ''1) Launch a notebook session, 2) install a PySpark conda env, 3) configure core-site.xml, 4) develop your PySpark app, 5) optionally use Data Flow (D).'' Other orders (A, B, C) misplace notebook launch or config---D is correct.

: Oracle Cloud Infrastructure Data Science Documentation, 'PySpark Development'.

Question 3 Domain 5 Use related OCI Services

Which architecture is based on the principle of ''never trust, always verify''?

Correct Answer B
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Identify the architecture with ''never trust, always verify.''

Evaluate Options:

A: Federated identity---Shares auth, not verification-focused.

B: Zero trust---Explicitly ''never trust, always verify''---correct.

C: Fluid perimeter---Adaptive, not the core principle.

D: Defense in depth---Layered, not verification-centric.

Reasoning: Zero trust matches the stated principle exactly.

Conclusion: B is correct.

OCI documentation states: ''Zero trust (B) architecture operates on 'never trust, always verify,' requiring continuous authentication and authorization.'' A, C, and D have different focuses---only B aligns with OCI's security philosophy.

: Oracle Cloud Infrastructure Security Documentation, 'Zero Trust Architecture'.

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Question 4 Domain 3 Implement end-to-end Machine Learning Lifecycle

You want to write a program that performs document analysis tasks such as extracting text and tables from a document. Which Oracle AI service would you use?

Correct Answer D
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Select an OCI AI service for text and table extraction from documents.

Evaluate Options:

A: Language---Text analysis, not extraction---incorrect.

B: Digital Assistant---Chatbots, not document tasks---incorrect.

C: Speech---Audio transcription, not documents---incorrect.

D: Vision---OCR for text/tables---correct.

Reasoning: Vision's OCR extracts text and tables from document images.

Conclusion: D is correct.

OCI documentation states: ''OCI Vision (D) uses OCR to extract text and tables from documents, supporting document analysis tasks.'' A analyzes text post-extraction, B and C are unrelated---only D fits per OCI's AI services.

: Oracle Cloud Infrastructure Vision Documentation, 'Document Analysis Features'.

Question 5 Domain 1 OCI Data Science - Introduction & Configuration

You want to make your model more frugal to reduce the cost of collecting and processing dat

a. You plan to do this by removing features that are highly correlated. You would like to create a heatmap that displays the correlation so that you can identify candidate features to remove. Which Accelerated Data Science (ADS) SDK method is appropriate to display the comparability between Continuous and Categorical features?

Correct Answer C
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Visualize correlation between continuous and categorical features.

Evaluate Options:

A: Pearson---Continuous vs. continuous---incorrect.

B: Cramer's V---Categorical vs. categorical---incorrect.

C: Correlation ratio---Continuous vs. categorical---correct.

D: General correlation---Not specific to mixed types.

Reasoning: Correlation ratio handles mixed feature types for heatmaps.

Conclusion: C is correct.

OCI documentation states: ''correlation_ratio_plot() (C) in ADS SDK visualizes correlations between continuous and categorical features, ideal for mixed-type heatmaps.'' Pearson (A) and Cramer's (B) are type-specific, corr() (D) is broad---only C fits per ADS capabilities.

: Oracle Cloud Infrastructure ADS SDK Documentation, 'Correlation Visualization'.

Question 6 Domain 4 Apply MLOps Practices

You are a data scientist with a set of text and image files that need annotation, and you want to use Oracle Cloud Infrastructure (OCI) Data Labeling. Which of the following THREE annotation classes are supported by the tool?

Correct Answer A, C, F
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Identify supported annotation classes in OCI Data Labeling.

Understand Tool: Supports image/text annotations for ML.

Evaluate Options:

A: Object detection---Yes (bounding boxes).

B: Named entity---Text-specific, not primary for images.

C: Classification---Yes (labels for images/text).

D: Key-point---Not listed in OCI docs.

E: Polygonal---Not explicitly supported.

F: Semantic segmentation---Yes (pixel-level).

Reasoning: A, C, F match OCI's image/text focus.

Conclusion: A, C, F are correct.

OCI Data Labeling supports ''object detection (A), classification (C), and semantic segmentation (F) for images and text,'' per documentation. B is text-specific, D and E aren't highlighted---only A, C, F are core classes.

: Oracle Cloud Infrastructure Data Labeling Documentation, 'Annotation Types'.

Question 7 Domain 5 Use related OCI Services

Which Web Application Firewall (WAF) service component must be configured to allow, block, or log network requests when they meet specified criteria?

Correct Answer A
Explanation

Detailed Answer in Step-by-Step Solution:

Objective: Identify the WAF component that controls request actions based on criteria.

Understand WAF Components:

Protection Rules: Define conditions and actions (e.g., allow, block, log).

Bot Management: Handles bot traffic, not general request rules.

Origin: Backend server endpoint, not rule-based.

WAF Policy: Umbrella config, but rules specify actions.

Evaluate Options:

A: Protection rules---Set specific criteria and actions---correct.

B: Bot Management---Bot-specific, not general requests.

C: Origin---Defines source, not actions.

D: WAF policy---Broad config, not the granular rules.

Reasoning: Protection rules directly manage request behavior---fit the requirement.

Conclusion: A is correct.

OCI documentation states: ''Protection rules (A) in WAF define conditions (e.g., IP, URL) and actions (allow, block, log) for incoming requests.'' Bot Management (B) targets bots, Origin (C) is a target server, and WAF Policy (D) encompasses rules but isn't the action specifier---only A aligns with OCI's WAF configuration.

: Oracle Cloud Infrastructure WAF Documentation, 'Protection Rules'.

Study Guide

What the Oracle 1Z0-1110-25 Exam Covers

Exam domains verified against the Official Oracle 1Z0-1110-25 exam guide, last checked October 2026.

Domain 1 OCI Data Science - Introduction & Configuration

10%

Understand the OCI Data Science platform capabilities and the Accelerated Data Science (ADS) SDK features for data science workflows. Configure your tenancy with proper access controls and initialization steps needed to start working with data science projects.

Sample question from this domain above Q5

Domain 2 Design and Set up OCI Data Science Workspace

15%

Create Projects and Notebook sessions for your team to collaborate on experiments. Set up Conda environments for dependency management, use OCI Vault for secure credential storage, and configure Git repositories for version control of your code.

Domain 3 Implement end-to-end Machine Learning Lifecycle

45%

Guide data from ingestion through exploration, preparation, visualization and profiling to model creation using both OCI services and open source libraries. Deploy models through the Model Catalog and integrate with OCI Generative AI, LangChain, and AI Quick Actions for production inference.

Sample questions from this domain above Q2Q4

Domain 4 Apply MLOps Practices

20%

Understand OCI MLOps architecture and create Jobs to automate custom tasks and model retraining workflows. Use Pipelines to orchestrate machine learning processes, scale model deployments with autoscaling for inference, and monitor system performance with logging and metrics.

Sample question from this domain above Q6

Domain 5 Use related OCI Services

10%

Create and manage Spark applications through OCI Data Flow integrated with Data Science. Explore OCI Open Data Service for public datasets and use OCI Data Labeling to prepare and export annotated datasets for model training.

Sample questions from this domain above Q1Q3Q7

FAQ

1Z0-1110-25 Exam FAQ

Common questions about the exam itself

What experience do I need before taking the 1Z0-1110-25 exam?
You should have hands-on experience working with Oracle Cloud Infrastructure and data science concepts. The exam tests your ability to apply knowledge in real projects, so prior experience building models or working with cloud platforms is important. Oracle recommends combining training courses with practical experience on OCI Data Science.
How long should I study to prepare for this exam?
Preparation time depends on your background, but plan for several weeks of study combining Oracle training courses, hands-on practice in OCI Data Science, and review of the exam objectives. The most effective approach uses the official training materials alongside practical experience with Projects, Notebooks, and model training.
Which objectives area do candidates typically find most challenging?
The Machine Learning Lifecycle domain carries 45 percent of the exam weight and covers the broadest range of topics from data preparation through model deployment. Candidates often need extra practice with the Accelerated Data Science SDK, model evaluation methods, and the integration between data preparation and model training steps.
Does the 1Z0-1110-25 exam test hands-on skills or just theoretical knowledge?
The exam questions test your ability to apply knowledge in real scenarios rather than just recall facts. You will see questions about designing OCI Data Science architectures, choosing the right services for specific problems, and implementing MLOps workflows. Hands-on experience with the platform is essential preparation.
Can I schedule the 1Z0-1110-25 exam online or must I go to a test center?
The exam is delivered through Pearson VUE, which offers both online proctored testing and in-person test center options. You can choose whichever format suits you best when scheduling your exam through your Oracle MyLearn account.
What is the format and structure of the 1Z0-1110-25 exam?
You have 90 minutes to answer 50 questions. The exam includes single-select, multiple-select, and other question formats that test your understanding of OCI Data Science services, MLOps practices, and machine learning workflows.
How does 1Z0-1110-25 relate to other OCI certification exams?
The Data Science Professional exam is one of several 2025 OCI specialist certifications. It focuses specifically on data science and machine learning workloads. If you are working across broader OCI infrastructure or security topics, you would pursue those separate specialist exams instead.
What happens if I do not pass the 1Z0-1110-25 exam on my first attempt?
Oracle allows you to retake the exam, though you must wait a minimum period between attempts and purchase another exam voucher or attempt. Check with Oracle Education for the current retake policies and any waiting period requirements.
How long does the 1Z0-1110-25 certification remain valid?
Oracle certifications typically remain valid for a set period, after which you may need to recertify by passing a current version of the exam or completing renewal requirements. Check Oracle Education for the specific validity period and any renewal options for this certification.
What job roles typically pursue the 1Z0-1110-25 Data Science Professional certification?
This certification targets data engineers, machine learning engineers, and data scientists who work with Oracle Cloud Infrastructure. It demonstrates expertise in building, training, and deploying machine learning models at scale on OCI, making it valuable for roles focused on enterprise data science projects.

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