PAS-C01 Operations and Maintenance Practice Question
Which TWO AWS services can be used to automate the start and stop of SAP EC2 instances based on a schedule? (Select TWO.)
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
✓
AWS Lambda with CloudWatch Events
The correct answers are A (AWS Lambda with CloudWatch Events) and C (AWS Instance Scheduler). Option A allows you to run a custom Lambda function triggered by CloudWatch Events on a schedule (e.g., cron expression) to start or stop EC2 instances. Option C is a purpose-built AWS solution for scheduling instance start and stop times. Options B (Systems Manager Run Command) is used for ad-hoc command execution, not for recurring scheduling. Option D (Auto Scaling) manages capacity based on scaling policies, not for scheduled start/stop of existing instances. Option E (AWS OpsWorks) is a configuration management service (Chef/Puppet) and not designed for scheduling instance power states.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
AWS Lambda with CloudWatch Events
Why this is correct
Can schedule start/stop.
- ✗
AWS Systems Manager Run Command
Why it's wrong here
For ad-hoc commands.
- ✓
AWS Instance Scheduler
Why this is correct
Schedules start/stop.
- ✗
AWS Auto Scaling
Why it's wrong here
For scaling.
- ✗
AWS OpsWorks
Why it's wrong here
For Chef/Puppet.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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Written by Johnson Ajibi, MSc IT Security
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This PAS-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 PAS-C01 exam.