Given a VPC with an Internet Gateway attached and a public subnet with a route to the Internet Gateway, what will happen if the subnet's instances do NOT have public IP addresses?

medium📝 Predict Output Q4 of 15

AWS - VPC Fundamentals

AInstances cannot access the internet despite the Internet Gateway.

BInstances can access the internet normally.

CInstances will receive automatic public IPs.

DInternet Gateway will assign public IPs to instances.

Step-by-Step Solution

Solution:

Step 1: Understand public IP requirement for internet access
Instances need public IPs to communicate over the internet via the Internet Gateway.
Step 2: Analyze the scenario
Without public IPs, instances cannot send or receive internet traffic even if routing exists.
Final Answer:
Instances cannot access the internet despite the Internet Gateway. -> Option A
Quick Check:
Public IP needed for internet access via IGW [OK]

Quick Trick: No public IP means no internet access via IGW [OK]

Common Mistakes:

Assuming IGW assigns public IPs automatically
Thinking routing alone enables internet access

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Given a VPC with an Internet Gateway attached and a public subnet with a route to the Internet Gateway, what will happen if the subnet's instances do NOT have public IP addresses?

Step 1: Understand public IP requirement for internet access

Step 2: Analyze the scenario

Final Answer:

Quick Check:

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