You need to create a custom VPC with a single subnet. The subnet's range must be as large as possible. Which range should you use?

The correct answer is B. 10.0.0.0/8. The private network range is defined by IETF (Ref: https://tools.ietf.org/html/rfc1918) and adhered to by all cloud providers. The supported internal IP Address ranges are: 1. 24-bit block 10.0.0.0/8 (16777216 IP Addresses) 2. 20-bit block 172.16.0.0/12 (1048576 IP Addresses) 3.

Submitted by renata2k· Mar 30, 2026Planning and configuring a cloud solution

Question

You need to create a custom VPC with a single subnet. The subnet's range must be as large as possible. Which range should you use?

Options

A0.0.0.0/0
B10.0.0.0/8
C172.16.0.0/12
D192.168.0.0/16

How the community answered

(65 responses)

A
6% (4)
B
88% (57)
C
5% (3)
D
2% (1)

Explanation

The private network range is defined by IETF (Ref: https://tools.ietf.org/html/rfc1918) and adhered to by all cloud providers. The supported internal IP Address ranges are: 1. 24-bit block 10.0.0.0/8 (16777216 IP Addresses) 2. 20-bit block 172.16.0.0/12 (1048576 IP Addresses) 3. 16-bit block 192.168.0.0/16 (65536 IP Addresses) 10.0.0.0/8 gives you the most extensive range - 16777216 IP Addresses.

Topics

#VPC#subnet#CIDR#IP addressing

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