Default VPC overview in AWS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Default VPC in AWS?

A Default VPC is a ready-made virtual network that AWS creates automatically in each region for your account. It lets you launch resources without setting up a network first.

beginner

What are the key features of a Default VPC?

It includes a default subnet in each Availability Zone, an internet gateway for internet access, and default route tables and security groups to allow basic communication.

intermediate

Can you delete the Default VPC in AWS?

Yes, you can delete the Default VPC, but AWS allows you to recreate it later if needed using a simple command or console option.

beginner

Why is the Default VPC useful for beginners?

It removes the need to configure networking before launching resources, making it easier and faster to start using AWS services.

intermediate

What is the default CIDR block range of a Default VPC?

The Default VPC uses the CIDR block 172.31.0.0/16, which provides a large private IP address range for your resources.

What does AWS automatically create in each region for your account?

A A Lambda function

B A custom subnet

C An Elastic IP

D A Default VPC

AWS creates a Default VPC automatically in each region to simplify launching resources.

Which CIDR block does the Default VPC use?

A 172.31.0.0/16

B 192.168.0.0/16

C 10.0.0.0/8

D 192.0.2.0/24

The Default VPC uses the CIDR block 172.31.0.0/16.

What component allows internet access in the Default VPC?

A NAT Gateway

B VPN Connection

C Internet Gateway

D Elastic Load Balancer

The Internet Gateway connects the Default VPC to the internet.

Can you recreate a Default VPC after deleting it?

A No, it is permanent

B Yes, using AWS console or CLI

C Only by contacting AWS support

D Only if you have a backup

AWS allows you to recreate the Default VPC easily after deletion.

Why is the Default VPC helpful for new AWS users?

A It provides a ready network to launch resources quickly

B It requires manual network setup

C It disables internet access by default

D It limits the number of resources you can launch

The Default VPC lets new users launch resources without complex network setup.

Explain what a Default VPC is and why AWS provides it.

Think about how AWS helps you start quickly without network setup.

Describe the main components included in a Default VPC and their purposes.

Consider what you need to connect resources inside and outside AWS.