Free Practice Questions for Oracle 1z0-1110-25 Exam

Detailed Answer in Step-by-Step Solution:

Understand ORM Template: It automates OCI Data Science setup with predefined configurations.

Evaluate Components:

A: User groups are created for role-based access—automated.

B: Dynamic groups (e.g., for notebook sessions) are included—automated.

C: Individual users require manual creation via IAM—not automated.

D: Basic policies (e.g., access to Data Science resources) are included—automated.

Reasoning: ORM focuses on infrastructure and permissions, not user accounts.

Conclusion: C is the exception.

The OCI Resource Manager template for Data Science “automatically provisions user groups, dynamic groups, and policies for basic use cases,” but “individual users must be created separately in IAM and assigned to groups.” C is the only item not handled by the template, per the documentation.

Oracle Cloud Infrastructure Resource Manager Documentation, "Data Science Template".

Detailed Answer in Step-by-Step Solution:

Objective: Identify the key difference between supervised and unsupervised learning.

Define Types:

Supervised: Uses labeled data (e.g., input-output pairs) to predict outcomes.

Unsupervised: Uses unlabeled data to find patterns (e.g., clustering).

Evaluate Options:

A: Labeled vs. unlabeled—Core distinction, correct.

B: Monitoring—Misleading, not the primary difference.

C: Image recognition—False, supervised applies broadly.

D: Data Engineer—Irrelevant to learning type.

Reasoning: A captures the foundational data difference.

Conclusion: A is correct.

OCI documentation states: “Supervised learning uses labeled data to train models for prediction, while unsupervised learning analyzes unlabeled data to discover patterns.” B, C, and D misrepresent this—only A aligns with OCI’s ML definitions and industry standards.

Oracle Cloud Infrastructure Data Science Documentation, "Machine Learning Types".

Detailed Answer in Step-by-Step Solution:

Objective: Identify the interactive coding environment in OCI Data Science.

Evaluate Options:

A: Model Catalog stores models—not for coding.

B: Jobs run predefined tasks—not interactive.

C: Notebook Sessions provide JupyterLab for coding and training—interactive.

D: Projects organize work—not a coding environment.

Reasoning: Notebook Sessions are OCI’s Jupyter-based tool for interactive ML development.

Conclusion: C is correct.

OCI Data Science Notebook Sessions “provide an interactive JupyterLab environment where data scientists can write code, explore data, and train machine learning models.” Model Catalog (A) is for storage, Jobs (B) for automation, and Projects (D) for organization—only C offers interactivity.

Oracle Cloud Infrastructure Data Science Documentation, "Notebook Sessions Overview".

Detailed Answer in Step-by-Step Solution:

Objective: Prevent deployment failure due to high utilization.

Evaluate Options:

A: More instances—Scales capacity—correct.

B: Delete—Stops service, not a solution.

C: Fewer instances—Worsens utilization.

D: Larger VM—Increases resource capacity—correct.

E: Reduce bandwidth—Limits load—correct.

Reasoning: A and D boost capacity, E controls demand—proactive fixes.

Conclusion: A, D, E are correct.

OCI documentation advises: “To handle high utilization, increase instances (A), use a larger compute shape (D), or adjust load balancer bandwidth (E) to manage request volume.” B stops service, C reduces capacity—only A, D, E prevent failure per OCI’s scaling options.

Oracle Cloud Infrastructure Data Science Documentation, "Model Deployment Scaling".

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".

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".

Detailed Answer in Step-by-Step Solution:

Objective: Find optimal compute shape balancing cost and time.

Approach: Iterative testing with metrics (e.g., CPU/memory usage, runtime).

Evaluate Options:

A: Tuning parameters when underutilized—focuses on model, not shape optimization.

B: Strongest shape—Costly, ignores balance; overkill likely.

C: Scale up from small shape when fully utilized—Balances cost/time effectively.

D: Random start with pre-tests—Unsystematic and inefficient.

Reasoning: C incrementally increases resources based on utilization, optimizing both factors.

Conclusion: C is correct.

OCI documentation advises: “To optimize compute shape for Jobs, start with a small shape, monitor utilization (e.g., CPU, memory) and runtime via OCI Monitoring. If fully utilized, scale up until performance plateaus—balancing cost and speed.” A misfocuses on model tuning, B wastes cost, and D lacks structure—only C aligns with this method.

Oracle Cloud Infrastructure Data Science Documentation, "Optimizing ComputeShapes for Jobs".

Detailed Answer in Step-by-Step Solution:

Analyze Git Operations: Identify which depend on internet speed.

Evaluate Options:

A. Staging (git add): Local operation—adds files to the index; no network involved.

B. Updating local repo (git pull): Downloads remote changes—requires internet, slowed by poor connectivity.

C. Pushing changes (git push): Uploads local commits to remote—network-dependent, delayed by slow speed.

D. Committing (git commit): Local snapshot—no network needed.

E. Converting to Git repo (git init): Local initialization—no internet required.

Reasoning: Only B and C involve network transfers, directly impacted by slow internet.

Conclusion: B and C are the correct choices.

Git operations like git pull (B) and git push (C) rely on network communication with a remote repository, such as OCI Code Repository, and are documented as “bandwidth-sensitive” in OCI’s guides. Local actions like staging (A), committing (D), and initializing (E) occur on the user’s machine, unaffected by internet speed. This matches standard Git behavior and OCI’s implementation.

Oracle Cloud Infrastructure Data Science Documentation, "Using Git in Notebook Sessions".

Detailed Answer in Step-by-Step Solution:

Objective: Optimize an embarrassingly parallel job in OCI Data Science Jobs.

Define Embarrassingly Parallel: Tasks are independent, ideal for simultaneous runs.

Evaluate Options:

A: Multiple simultaneous runs—Leverages parallelism—correct.

B: One job per run—Misstates capability; unnecessary complexity.

C: Sequential runs—Inefficient, ignores parallelism.

D: False—Jobs support parallelism.

Reasoning: A maximizes efficiency for parallel tasks.

Conclusion: A is correct.

OCI documentation states: “For embarrassingly parallel workloads, create a single Job and launch multiple simultaneous Job Runs to process data in parallel.” B misinterprets limits, C wastes time, and D denies capability—only A fits OCI’s design.

Oracle Cloud Infrastructure Data Science Documentation, "Parallel Job Runs".

Detailed Answer in Step-by-Step Solution:

Context Analysis: You need to investigate an existing deep neural network model in the OCI Model Catalog with no prior information.

Understand Model Catalog: The Model Catalog stores trained models along with metadata, hyperparameters, and provenance (origin and history) details.

Evaluate Options:

A. Refer to the code inside the model: The model artifact (e.g., a serialized file like .pkl) doesn’t typically include readable source code; it’s a trained object, not the training script.

B. Check for model taxonomy details: Taxonomy (e.g., classification vs. regression) provides high-level categorization but lacks specifics like framework or architecture.

C. Check for metadata tags: Metadata includes name, description, and tags, offering some context but not detailed framework info (e.g., TensorFlow vs. PyTorch).

D. Check for provenance details: Provenance tracks the model’s creation process, including the framework, training environment, and data sources, providing the most comprehensive insight.

Reasoning: Provenance details are designed to document the “how” and “what” of model creation, making them ideal for uncovering the framework (e.g., Keras, PyTorch) and other specifics absent from initial handover.

Conclusion: D is the best approach for detailed investigation.

In OCI Data Science, the Model Catalog stores provenance information, which includes “details about the model’s origin, such as the framework used (e.g., TensorFlow, PyTorch), the training environment, and dataset references.” This is more informative than metadata tags (C), which are user-defined and less structured, or taxonomy (B), which is broad. The model artifact (A) is a binary file (e.g., pickle), not a readable codebase. Provenance (D) offers a detailed audit trail, critical for analyzing an undocumented deep neural network model like this one.

Oracle Cloud Infrastructure Data Science Documentation, "Model Catalog - Provenance Details" section.