You have a VPC with CIDR block 192.168.0.0/22. You want to create two subnets with equal size. Which CIDR blocks correctly split the VPC?

hard📝 Application Q9 of 15

AWS - VPC Fundamentals

You have a VPC with CIDR block 192.168.0.0/22. You want to create two subnets with equal size. Which CIDR blocks correctly split the VPC?

A192.168.0.0/22 and 192.168.1.0/22

B192.168.0.0/23 and 192.168.2.0/23

C192.168.0.0/24 and 192.168.1.0/24

D192.168.0.0/23 and 192.168.1.0/23

Step-by-Step Solution

Solution:

Step 1: Understand /22 block range
/22 covers IPs from 192.168.0.0 to 192.168.3.255.
Step 2: Split into two /23 subnets
/23 splits /22 into two equal parts: 192.168.0.0/23 (0-1.255) and 192.168.1.0/23 (1.0-1.255).
Final Answer:
192.168.0.0/23 and 192.168.1.0/23 -> Option D
Quick Check:
/22 splits into two /23 subnets sequentially [OK]

Quick Trick: Split /22 into two /23s by incrementing third octet by 1 [OK]

Common Mistakes:

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