AWS Certified Advanced Networking – Specialty (ANS-C01) — Question 93

A company's application team is unable to launch new resources into its VPC. A network engineer discovers that the VPC has run out of usable IP addresses. The VPC CIDR block is 172.16.0.0/16.

Which additional CIDR block can the network engineer attach to the VPC?

Answer options

• A. 172.17.0.0/29
• B. 10.0.0.0/16
• C. 172.17.0.0/16
• D. 192.168.0.0/16

Correct answer: C

Explanation

The correct answer is C, 172.17.0.0/16, as it is a valid CIDR block that does not overlap with the existing VPC CIDR block. Options A and B are either too small or belong to different private IP ranges but do not fit within the VPC structure. Option D overlaps with other common private ranges and is not applicable here.