MLS-C01 Practice Question: Machine Learning Implementation and Operations
A company is deploying a SageMaker model for real-time inference. The endpoint must be highly available and cost-effective. Which TWO actions should the company take? (Select TWO.)
⚠ Common exam trap
Candidates often confuse managed spot training with inference, or think a single large instance is more cost-effective than multiple smaller instances with auto scaling, ignoring the high availability requirement.
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
✓
Deploy the endpoint with at least two instances in different Availability Zones
Deploying a SageMaker endpoint with at least two instances in different Availability Zones (AZs) ensures high availability by eliminating a single point of failure. If one AZ goes down, traffic is automatically routed to the healthy instance in the other AZ, meeting the requirement for a highly available real-time inference endpoint.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use managed spot training for inference
Why it's wrong here
Spot instances are not for real-time inference endpoints.
- ✓
Deploy the endpoint with at least two instances in different Availability Zones
Why this is correct
Multi-AZ deployment provides high availability.
- ✗
Use GPU instances for all models even if not required
Why it's wrong here
GPU instances cost more; use only if needed.
- ✓
Configure automatic scaling based on latency or request count
Why this is correct
Auto-scaling optimizes cost by adjusting instances.
- ✗
Use a single large instance to handle peak load
Why it's wrong here
Single instance is not HA.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This MLS-C01 practice question is part of Courseiva's free Amazon Web Services 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 MLS-C01 exam.