Oracle Cloud Infrastructure 2021 Multicloud Architect Associate — Question 1

You have been asked to review a network design for Oracle Cloud Infrastructure (OCI) by a major client. The client's IT team needs to provision two Virtual Cloud
Networks (VCNs) for a major application. The application uses a large number of virtual machine instances. Additionally, in the future, a VCN peering will be required to allow connectivity between the VCNs.
Which of the following are valid IP ranges to consider? (Choose the best answer.)

Answer options

• A. 10.0.0.0/30 and 192.168.0.0/30
• B. 10.0.0.0/8 and 11.0.0.0/8
• C. 10.0.8.0/21 and 10.0.16.0/22
• D. 10.0.0.0/16 and 10.0.64.0/24

Correct answer: C

Explanation

Option C is correct because the IP ranges 10.0.8.0/21 and 10.0.16.0/22 are suitable for VCNs, allowing for enough IP addresses for a large number of virtual machine instances while also supporting future peering requirements. The other options either provide insufficient IP addresses for the application needs or overlap with each other, which would not be appropriate in a VCN design.