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If you launch an EC2 instance in the Default VPC, what is the default behavior regarding internet access?

medium📝 service behavior Q13 of 15
AWS - VPC Fundamentals
If you launch an EC2 instance in the Default VPC, what is the default behavior regarding internet access?
AThe instance automatically gets a public IP and internet access
BThe instance can only access other instances in the same subnet
CThe instance has no internet access unless manually configured
DThe instance is blocked from all network traffic by default
Step-by-Step Solution
Solution:

  1. Step 1: Understand Default VPC internet setup

    Default VPC subnets are public and assign public IPs automatically.

  2. Step 2: Check instance network behavior

    Instances launched get internet access by default through the internet gateway.

  3. Final Answer:

    The instance automatically gets a public IP and internet access -> Option A

  4. Quick Check:

    Default VPC instance = public IP + internet [OK]
Quick Trick: Default VPC instances get public IPs automatically [OK]
Common Mistakes:
  • Assuming no internet without manual setup
  • Thinking instances are isolated by default
  • Believing network traffic is blocked initially

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