AI0-001 AI Implementation and Operations Practice Question
A financial institution needs to integrate an AI-based credit scoring model into an existing mainframe system that processes transactions in COBOL. The model is deployed as a REST API. What is the best strategy to ensure minimal disruption and maintain data integrity?
⚠ Common exam trap
CompTIA often tests the misconception that legacy systems must be replaced or heavily modified to integrate with modern AI services, when in fact an API gateway provides a non-invasive integration layer that preserves the existing infrastructure.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use an API gateway with versioning and circuit breaker patterns.
An API gateway with versioning and circuit breaker patterns allows the COBOL mainframe to call the REST API without modifying its core transaction logic. The gateway handles protocol translation, rate limiting, and failover, ensuring minimal disruption to the existing mainframe system while maintaining data integrity through transactional consistency and graceful degradation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Copy all transaction data to a cloud database for the model to access.
Why it's wrong here
Data copying introduces latency, synchronization issues, and potential data integrity risks.
- ✓
Use an API gateway with versioning and circuit breaker patterns.
Why this is correct
This pattern enables loose coupling, resilience, and gradual integration without major changes to the mainframe.
- ✗
Rewrite the mainframe system in Java to directly call the model.
Why it's wrong here
Rewriting the mainframe is costly, risky, and causes significant disruption.
- ✗
Install a GPU on the mainframe to run the model natively.
Why it's wrong here
Mainframes are not designed for GPU workloads and this would be very complex and expensive.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AI0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AI0-001 exam.