Answer-first summary for fast verification
Answer: 10.0.0.0/8
The correct answer is **B** because the CIDR block 10.0.0.0/8 offers the largest range of private IP addresses (16,777,212) among the standard private CIDR blocks (192.168.0.0/16, 172.16.0.0/12, 10.0.0.0/8) that can be assigned to a VPC and its subnets. - **192.168.0.0/16** provides 65,532 private IPs. - **172.16.0.0/12** provides 1,048,572 private IPs. - **10.0.0.0/8** provides 16,777,212 private IPs. Option **D** (0.0.0.0/0) is incorrect as it is not within the allowed RFC 1918 CIDR ranges. Options **A** and **C** are also incorrect because they offer fewer private IPs compared to the 10.0.0.0/8 CIDR block. For more details, refer to the GCP documentation on [VPC Subnet IP ranges](https://cloud.google.com/vpc/docs/subnets).
Author: LeetQuiz Editorial Team
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Your company is planning to establish a virtual private cloud (VPC) network and aims to configure a single subnet within this VPC to utilize the maximum range of available IP addresses. Which CIDR block would you recommend for this purpose?
A
172.16.0.0/12
B
10.0.0.0/8
C
192.168.0.0/16
D
0.0.0.0/0