Custom VPC creation in GCP - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Custom VPC in Google Cloud Platform?

A Custom VPC is a Virtual Private Cloud network where you manually create and control subnets, IP ranges, and routing. It gives you full control over your network layout.

beginner

Why would you choose a Custom VPC over an Auto mode VPC?

You choose a Custom VPC to control subnet IP ranges, regions, and routing. It helps avoid IP conflicts and tailor the network to your needs.

beginner

What is a subnet in a Custom VPC?

A subnet is a range of IP addresses in a specific region inside your VPC. It helps organize and isolate resources by location.

intermediate

How do firewall rules relate to a Custom VPC?

Firewall rules control which traffic is allowed in and out of your VPC. They protect your resources by allowing only trusted connections.

intermediate

What is the purpose of routing in a Custom VPC?

Routing directs network traffic between subnets, the internet, and other networks. It ensures data reaches the right destination.

What must you define when creating a Custom VPC in GCP?

A Subnets with IP ranges and regions

B Only the VPC name

C Firewall rules automatically

D Default internet gateway

In a Custom VPC, you manually define subnets with specific IP ranges and regions.

Which of these is NOT a benefit of using a Custom VPC?

A Full control over IP address ranges

B Custom routing rules

C Automatic subnet creation in all regions

D Better network isolation

Automatic subnet creation in all regions is a feature of Auto mode VPCs, not Custom VPCs.

What does a subnet represent in a Custom VPC?

A A firewall rule

B A group of IP addresses in a region

C A virtual machine

D A storage bucket

A subnet is a range of IP addresses within a specific region in your VPC.

How do firewall rules affect a Custom VPC?

A They manage billing

B They create subnets automatically

C They assign IP addresses

D They control allowed network traffic

Firewall rules control which network traffic is allowed to enter or leave your VPC.

What is the role of routing in a Custom VPC?

A Direct traffic between subnets and networks

B Create firewall rules

C Assign IP addresses to VMs

D Monitor network usage

Routing directs network traffic to the correct destination within or outside the VPC.

Explain the key steps to create a Custom VPC in Google Cloud Platform.

Think about how you organize your home network with rooms and rules.

Describe why controlling IP ranges and subnets is important in a Custom VPC.

Imagine assigning house addresses carefully to avoid confusion.