Oracle Cloud Infrastructure 2019 Developer Associate — Question 128

You have been tasked with creating one virtual cloud network (VCN) each for two line of business (LOB) applications. LOB A and LOB B will need to communicate with each other. To ensure that you can utilize VCN peering, which network CIDR ranges should be used?

Answer options

• A. VCN A (10.0.0.0/16) and VCN B (10.1.0.0/16)
• B. VCN A (10.0.2.0/16) and VCN B (10.0.2.0/25)
• C. VCN A (10.0.0.0/16) and VCN B (10.0.16.0/24)
• D. VCN A (172.16.0.0/24) and VCN B (172.16.0.0/28)

Correct answer: A

Explanation

The correct answer is A because the CIDR ranges 10.0.0.0/16 and 10.1.0.0/16 are non-overlapping, allowing for successful VCN peering. Options B and C have overlapping CIDR ranges, which would prevent peering, and option D also has overlapping ranges that are not valid for this scenario.