VPC Connectivity Troubleshooting Quiz

Quiz covering Network Troubleshooting

Questions in this quiz

A preview of the 5 questions covered. Start the quiz above to answer them, check your score, and read the explanations.

1. 1

   You are unable to connect to an EC2 instance via SSH. Which of the following is the most immediate place to check for traffic filtering on the instance itself?

2. 2

   An instance in a private subnet cannot reach the internet to download updates, even though it has a NAT Gateway configured. What is the most likely cause?

3. 3

   Two instances in different subnets within the same VPC cannot communicate. Both Security Groups allow the traffic. What is another common network-level configuration to verify?

4. 4

   You have configured VPC Peering between VPC A (10.0.0.0/16) and VPC B (192.168.0.0/16). Instances can ping each other by private IP, but cannot resolve hostnames. What is the likely missing configuration?

5. 5

   You are troubleshooting a connection between an on-premises data center and a VPC via a VPN. The VPN tunnel is 'Up', but traffic is not flowing. You notice the traffic is being dropped at the VPC boundary. Which component is the most likely culprit?