ANS-C01 VPC Reachability Analyzer Practice Question
A network engineer needs to verify the routing path between two EC2 instances in different subnets within the same VPC. Which AWS tool can provide this information?
⚠ Common exam trap
Candidates often confuse VPC Reachability Analyzer with AWS Config or simply default to using traceroute. Remember that Reachability Analyzer is the dedicated AWS service for path verification without requiring instance access.
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
✓
VPC Reachability Analyzer
VPC Reachability Analyzer can test connectivity and provide the routing path between two resources in the same VPC. Option A is incorrect because Amazon CloudWatch Logs is used for collecting log data, not for analyzing network paths. Option C is incorrect because AWS Config tracks configuration changes and compliance, not real-time path analysis. Option D is incorrect because running traceroute is not an AWS tool; it is a manual command-line utility that requires access to the instances and does not provide a holistic view of the VPC routing path.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs stores logs, not path analysis.
- ✓
VPC Reachability Analyzer
Why this is correct
Reachability Analyzer tests connectivity and shows the routing path.
- ✗
AWS Config
Why it's wrong here
AWS Config records configuration changes, not real-time path analysis.
- ✗
Run traceroute from one instance to the other
Why it's wrong here
Traceroute requires SSH access and may not work if security groups block ICMP.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-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 ANS-C01 exam.