OCI 1Z0-1042-25 Sample Questions with Explanations

These original sample questions are designed to help you check how the exam topics appear in decision-style prompts. They are not taken from the live exam.

Use these sample questions as a guided self-assessment for OCI Application Integration Professional (1Z0-1042-25) topics such as API exposure, authentication boundaries, Events, Notifications, Streaming, Functions, retry behavior, idempotency, secret handling, and observability. The prompts focus on safe integration design, not just wiring services together.

Where these questions fit in the 1Z0-1042-25 guide

The sample set below is part of the Oracle OCI 1Z0-1042-25 guide path:

• Oracle certification hub
• OCI guides
• 1Z0-1042-25 exam guide
• 1Z0-1042-25 cheat sheet
• 1Z0-1042-25 study plan
• 1Z0-1042-25 FAQ
• 1Z0-1042-25 resources
• 1Z0-1042-25 glossary

1Z0-1042-25 OCI Application Integration sample questions

Work through each prompt before opening the explanation. Integration questions usually reward classifying the flow first: synchronous API, event trigger, notification fan-out, durable stream, function glue, or workflow control.

---

Question 1

Topic: Public API boundary

An external partner must call an HTTPS endpoint that validates requests and forwards accepted calls to a private backend. The backend should not be exposed directly to the internet. Which design is strongest?

• A. Give the partner a direct public IP address for the backend server.
• B. Put API Gateway at the public boundary, apply the required authentication and routing policy, and forward only valid calls to the backend.
• C. Store request files in Object Storage and ask the partner to wait for a manual response.
• D. Use only a Notification topic because every integration request is a notification.

Best answer: B

Explanation: API Gateway is the correct controlled ingress point for a synchronous external API. It keeps the backend private while giving the integration a managed boundary for routing and authentication decisions.

Why the other choices are weaker:

• A exposes the backend directly and weakens the security boundary.
• C changes an API requirement into a manual file workflow.
• D confuses notification fan-out with request-response API exposure.

What this tests: API Gateway, synchronous integration, public boundary placement, and backend exposure control.

Related topics: API Gateway; Authentication; Private backend; HTTPS APIs; Integration boundaries

---

Question 2

Topic: Durable event processing

A downstream analytics system must process every order event in sequence per partition and recover from consumer outages without losing messages. Which integration pattern is strongest?

• A. Send one email notification for each order and rely on analysts to replay missed emails.
• B. Trigger a Function and discard the event after one failed attempt.
• C. Use a durable streaming pattern with consumers that track progress and retry processing safely.
• D. Store the latest order only in a single object and overwrite it every minute.

Best answer: C

Explanation: Durable stream processing is a better fit when consumers need to process event records reliably and recover from interruptions. Tracking consumer progress and retrying safely protects against missed or duplicated downstream processing.

Why the other choices are weaker:

• A turns a system integration into a human workflow.
• B lacks durable recovery behavior.
• D loses event history and cannot process every order.

What this tests: Streaming versus notification, durable processing, consumer recovery, and event semantics.

Related topics: Streaming; Consumers; Durable events; Retry; Ordering

---

Question 3

Topic: Retry and dead-letter handling

A function calls a third-party API. The API sometimes times out, and some payloads fail permanently because of validation errors. The team wants retries for transient failures but does not want poison messages to block the integration forever. What is the strongest approach?

• A. Retry every failed payload forever with no logging.
• B. Disable retries so every transient timeout becomes a permanent failure.
• C. Increase the function timeout until every third-party call eventually succeeds.
• D. Use bounded retries with backoff, classify non-retryable failures, record enough error context, and route persistent failures to a review or dead-letter path.

Best answer: D

Explanation: Integration reliability requires separating transient failures from permanent bad payloads. Bounded retries and backoff help with temporary faults, while a dead-letter or review path prevents poison messages from blocking the flow.

Why the other choices are weaker:

• A creates endless retries and weak evidence.
• B gives up on recoverable transient faults.
• C treats all failures as slow successes and does not address invalid payloads.

What this tests: Retry strategy, backoff, non-retryable failures, dead-letter handling, and operational evidence.

Related topics: Retries; Backoff; Dead-letter path; Functions; Integration reliability

---

Question 4

Topic: Secret handling in integrations

An integration flow needs a credential to call a partner API. The credential is currently copied into a function environment variable and also appears in deployment scripts. What should be fixed first?

• A. Store the credential in an approved secret-management path, rotate the exposed value, and grant the runtime only the permission needed to retrieve or use it.
• B. Rename the environment variable so it is harder to guess.
• C. Put the credential in a comment at the top of the integration code.
• D. Disable logs so the credential cannot appear in new log entries.

Best answer: A

Explanation: The credential has already been exposed in multiple places, so it should be rotated and moved to a controlled secret-management path. Runtime access should be scoped so the integration can use the secret without broad credential sprawl.

Why the other choices are weaker:

• B hides the name, not the secret.
• C makes the exposure worse.
• D removes observability and does not fix storage or rotation.

What this tests: Secrets management, rotation, runtime access scope, and secure integration operations.

Related topics: Secrets; Vault; Functions; Rotation; Least privilege

Independent study note

Tech Exam Lexicon and IT Mastery are independent study tools. They are not affiliated with, endorsed by, or sponsored by Oracle or any certification body.