Oracle Updated 1z0-1110-25 Exam Questions and Answers by aris

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".

Detailed Answer in Step-by-Step Solution:

Objective: Select two metrics for multiclass classification in AutoML.

Understand Multiclass Metrics: Focus on class-specific performance—classification, not regression.

Evaluate Options:

A. Recall: Measures true positives per class—key for multiclass—correct.

B. Mean squared error: Regression metric—incorrect.

C. F1 Score: Balances precision and recall—standard for multiclass—correct.

D. R-Squared: Regression fit—incorrect.

E. Explained variance: Regression metric—incorrect.

Reasoning: A and C assess classification accuracy across multiple classes—fit AutoML’s evaluation.

Conclusion: A and C are correct.

OCI AutoML documentation states: “For multiclass classification, common evaluation metrics include recall (A) for per-class sensitivity and F1 Score (C) for balanced performance.” B, D, and E are regression-focused—only A and C are supported and relevant per OCI’s AutoML metrics suite.

Oracle Cloud Infrastructure AutoML Documentation, "Evaluation Metrics for Classification".

Detailed Answer in Step-by-Step Solution:

Objective: Identify two reasons for key rotation in OCI Vault.

Understand Key Rotation: Enhances security by updating keys.

Evaluate Options:

A: Five-key limit—False, no such restriction.

B: Efficiency—False, not the purpose.

C: Reuse—False, rotation prevents reuse.

D: Reduces risk—True, limits exposure—correct.

E: Limits data—True, reduces breach scope—correct.

Reasoning: D and E are security-focused—key Vault benefits.

Conclusion: D and E are correct.

OCI documentation states: “Key rotation in Vault (D) reduces risk if a key is compromised and (E) limits the data encrypted by a single key version, enhancing security.” A, B, and C misrepresent rotation’s purpose—only D and E align with OCI’s Vault best practices.

Oracle Cloud Infrastructure Vault Documentation, "Key Rotation Benefits".

Detailed Answer in Step-by-Step Solution:

Prepare Model: Build and train the time series model using historical data.

Verify: Validate the model’s accuracy (e.g., using metrics like MAE or RMSE).

Save: Store the trained model (e.g., in the OCI Model Catalog).

Deploy: Make the model available for predictions (e.g., via OCI Model Deployment).

Predict: Generate revenue forecasts for the upcoming quarter.

Evaluate Options: D follows this logical flow; others (e.g., A starts with “verify” before preparation) don’t.

In OCI Data Science, the workflow for time series forecasting involves preparing the model (training), verifying its performance, saving it to the catalog, deploying it, and then predicting. This sequence is standard for ML deployment in OCI, as per the documentation. (Reference: Oracle Cloud Infrastructure Data Science Documentation, "Time Series Forecasting Workflow").