CV0-004 Operations and Support Practice Question
A cloud administrator needs to apply security patches to a fleet of 50 Linux servers running on AWS without interrupting business hours. Which approach should the administrator use to schedule patching during a maintenance window?
⚠ Common exam trap
CV0-004 often tests the misconception that AWS Config can enforce or apply patches, when it only assesses compliance; candidates may confuse Config's role with Patch Manager's active patching capabilities.
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 AWS Systems Manager Patch Manager with a maintenance window
AWS Systems Manager Patch Manager is designed to automate the process of patching fleets of instances. It integrates with Maintenance Windows, allowing administrators to define a schedule (e.g., outside business hours) during which patching tasks run. This approach is scalable, auditable, and does not require manual intervention or custom scripting, making it the correct choice for patching 50 Linux servers without interrupting business hours.
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 AWS Systems Manager Patch Manager with a maintenance window
Why this is correct
AWS Systems Manager Patch Manager with a maintenance window satisfies the no-business-hours constraint by targeting the 50 Linux instances via tags and running patch baselines only within a defined schedule, using an IAM service role rather than SSH. This avoids manual intervention and prevents patching outside the approved window.
- ✗
Create a Lambda function that stops instances, patches them, and restarts
Why it's wrong here
A custom Lambda function stopping and restarting instances patches nothing itself and risks leaving servers offline if the function fails mid-run. It is tempting because Lambda offers scheduled automation, but AWS Systems Manager Patch Manager with maintenance windows handles patching and rebooting natively.
- ✗
Manually SSH into each server and run yum update
Why it's wrong here
Manual SSH patching cannot schedule or coordinate a maintenance window across 50 hosts, and yum update runs immediately on each server, risking business-hours disruption. It is tempting because SSH gives direct control for one-off fixes, but AWS Systems Manager Maintenance Windows with Patch Manager is built for fleet-wide scheduled patching.
- ✗
Use AWS Config to apply patch baselines
Why it's wrong here
AWS Config evaluates and records resource configuration compliance; it neither installs operating system packages nor schedules maintenance windows. It is tempting because Config can detect missing patches, and it would be the right service for auditing patch compliance rather than applying patches across the fleet.
Go deeper
Related to this question
About these practice questions
Courseiva writes every CV0-004 question from scratch — 834 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This CV0-004 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 CV0-004 exam.