AWS - EC2 Fundamentals
A user tries to connect to their EC2 instance but gets a timeout error. Which of the following is the most likely cause?
A user tries to connect to their EC2 instance but gets a timeout error. Which of the following is the most likely cause?
medium📝 Debug Q7 of 15
Step-by-Step Solution
Solution:
Step 1: Identify common causes of connection timeout
Timeout usually means network traffic is blocked, often by security group rules.Step 2: Exclude other options
Instance size or AMI compatibility do not cause timeouts; stopped instances cannot be connected but usually give different errors.Final Answer:
The security group does not allow inbound traffic on the required port -> Option DQuick Check:
Timeout = blocked inbound port in security group [OK]
Quick Trick: Open required ports in security group for access [OK]
Common Mistakes:
- Blaming instance size for network issues
- Ignoring security group inbound rules
- Assuming AMI compatibility causes timeouts
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