The Oracle Cloud Infrastructure 2025 Data Science Professional (1Z0-1110-25) exam validates your ability to design, implement, and manage machine learning workflows on Oracle Cloud Infrastructure. This certification is ideal for data scientists, ML engineers, and cloud professionals who work with OCI's data science services. This guide maps the exam syllabus, explains question formats, and provides actionable preparation steps to help you pass with confidence.
Use this topic map to guide your study for Oracle 1Z0-1110-25 (Oracle Cloud Infrastructure 2025 Data Science Professional) within the Oracle Cloud and Oracle Cloud Infrastructure path.
The 1Z0-1110-25 exam uses multiple-choice and scenario-based questions to measure both conceptual knowledge and practical decision-making in real-world ML contexts.
Questions progress in difficulty and emphasize practical application, so expect to analyze workflows and justify design choices rather than simply recall facts.
A structured study plan aligned to the five core topics ensures you build depth in each area and connect concepts across the ML lifecycle. Dedicate 4-6 weeks to study, with daily practice and weekly review cycles.
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The ML Lifecycle and MLOps topics typically account for 40-50% of the exam, as they test both breadth of knowledge and depth of practical application. Workspace setup and related OCI services follow closely, each representing 20-25% of the content. Introduction and configuration topics form the foundation but represent a smaller percentage, so prioritize hands-on experience with model training, deployment, and production monitoring.
In practice, you start with proper OCI Data Science configuration and workspace design to enable team collaboration and resource management. You then implement the full ML lifecycle within that workspace, from data preparation to model evaluation. MLOps practices ensure your trained models move safely to production with monitoring and retraining automation. Related OCI services (Object Storage, Autonomous Database, Data Integration) support each stage by providing data access, compute, and integration capabilities. Understanding these connections helps you design end-to-end solutions rather than isolated components.
Hands-on experience is valuable but not mandatory if you study effectively with practice questions and scenario analysis. Prioritize labs that cover workspace creation, notebook session setup, model training with the OCI Data Science SDK, and model deployment to the Model Catalog. If time is limited, focus on one complete end-to-end ML project in a test environment rather than many shallow exercises. This reinforces the lifecycle concept and builds confidence in real-world decision-making.
Many candidates confuse OCI Data Science features with generic ML concepts and miss OCI-specific configuration details. Others underestimate the importance of MLOps practices and model governance, treating deployment as a one-time event rather than an ongoing lifecycle. Weak areas often include integrating related services (knowing when to use Autonomous Database vs. Object Storage) and understanding cost and performance trade-offs. Practice scenario questions thoroughly to avoid these pitfalls.
In your final week, focus on weak topics identified during practice tests rather than re-reading all material. Do one untimed practice test to reinforce understanding, then one timed test under exam conditions to build pacing. Review explanations for any questions you answer incorrectly or slowly. On the day before the exam, do a light review of key definitions and service integrations, then rest well. Avoid cramming new material; trust your preparation and focus on confidence.
You are a data scientist; you use the Oracle Cloud Infrastructure (OCI) Language service to train custom models. Which types of custom models can be trained?
Detailed Answer in Step-by-Step Solution:
Objective: Identify custom model types for OCI Language.
Understand OCI Language: Focuses on text analysis.
Evaluate Options:
A: Image classification---Not text-based, incorrect.
B: Text classification, NER---Both text tasks---correct.
C: Sentiment, NER---Sentiment is pretrained, not custom.
D: Object detection---Image-based, incorrect.
Reasoning: B aligns with OCI Language's text custom models.
Conclusion: B is correct.
OCI Language documentation states: ''Custom models can be trained for text classification and Named Entity Recognition (NER) using your data.'' Image tasks (A, D) are for Vision, and sentiment (C) is pretrained---only B fits OCI Language's scope.
: Oracle Cloud Infrastructure Language Documentation, 'Custom Model Training'.
Triggering a PagerDuty notification as part of Monitoring is an example of what in the OCI Console?
Detailed Answer in Step-by-Step Solution:
Objective: Classify a PagerDuty notification in OCI Monitoring.
Understand OCI Monitoring: Involves events, rules, and actions for notifications.
Evaluate Options:
A: Action---executes a response (e.g., notify PagerDuty) when triggered---correct.
B: Rule---defines conditions for triggering actions---precedes the action.
C: Function---serverless code, not directly tied to notifications.
D: Event---state change triggering a rule, not the notification itself.
Reasoning: The notification is the action taken after an event/rule---fits A.
Conclusion: A is correct.
OCI documentation states: ''Actions in the Monitoring service execute responses, such as sending notifications to PagerDuty, when a rule's condition is met based on an event.'' Rules (B) set conditions, Functions (C) are unrelated, and Events (D) are triggers---only Action (A) describes the notification step.
: Oracle Cloud Infrastructure Monitoring Documentation, 'Actions Overview'.
As a data scientist, you require a pipeline to train ML models. When can a pipeline run be initiated?
Detailed Answer in Step-by-Step Solution:
Objective: Determine when an OCI Data Science pipeline can start.
Understand Pipelines: They're workflows with defined steps, executed on demand or scheduled.
Evaluate Options:
A: Once created, a pipeline can be run immediately---correct.
B: ''During run state'' implies it's already running---illogical.
C: ''After active state'' is unclear; pipelines run when triggered, not post-state.
D: ''Before active state'' is vague---creation precedes running.
Reasoning: Pipelines are executable post-creation via UI/CLI---simplest interpretation is A.
Conclusion: A is correct.
OCI Data Science documentation states: ''After a pipeline is created, you can initiate a pipeline run immediately or schedule it using the OCI Console, CLI, or SDK.'' B, C, and D misalign with this---running starts post-creation (A), not during/after ambiguous states.
: Oracle Cloud Infrastructure Data Science Documentation, 'Pipelines - Running a Pipeline'.
Which Security Zone policy is NOT valid?
Detailed Answer in Step-by-Step Solution:
Objective: Spot the invalid Security Zone policy.
Understand Security Zones: Enforce strict security---resources can't leave easily.
Evaluate Options:
A: Boot volume move---Not allowed; violates zone rules---invalid.
B: Compute no-move---True, enforces security.
C: No public access---True, standard policy.
D: Auto-backup---True, required for compliance.
Reasoning: A contradicts Security Zone immutability.
Conclusion: A is incorrect.
OCI documentation states: ''Resources like boot volumes (A) cannot be moved from a Security Zone to a standard compartment---B, C, and D are enforced policies.'' A violates OCI's Security Zone restrictions---only A is not valid.
: Oracle Cloud Infrastructure Security Zones Documentation, 'Policy Restrictions'.
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?
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'.