Question 58 of 1,511
DOP-C02 Incident and Event Response Practice Question
Network Topology
An EC2 instance shows as 'running' in the AWS console, but the system status check is 'impaired'. What is the most likely cause?
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
✓
The underlying physical host has experienced a failure.
System status checks indicate problems with the underlying physical host, such as loss of network connectivity, power loss, or hardware failure. Option A is incorrect because security group rules affect network traffic but do not impact system status checks. Option B is incorrect because a corrupted EBS root volume would be detected by instance status checks, not system status checks. Option C is incorrect because the operating system not responding would be reflected in instance status checks, which monitor OS-level issues.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The instance's security group rules are blocking traffic.
Why it's wrong here
Security group rules do not affect system status checks.
- ✗
The EBS root volume is corrupted.
Why it's wrong here
EBS volume issues are reflected in instance status checks, not system status checks.
- ✗
The instance's operating system is not responding.
Why it's wrong here
OS issues are detected by instance status checks, not system status checks.
- ✓
The underlying physical host has experienced a failure.
Why this is correct
System status checks monitor the health of the physical host; impairment indicates host issues.
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Last reviewed: Jun 20, 2026
This DOP-C02 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 DOP-C02 exam.
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