Oracle Cloud Infrastructure 2019 Developer Associate — Question 97

You are designing a networking infrastructure in multiple Oracle Cloud Infrastructure regions and require connectivity between workloads in each region. You have created a dynamic routing gateway (DRG) and a remote peering connection. However, your workloads are unable to communicate with each other.
What are two reasons for this? (Choose two.)

Answer options

• A. The security lists associated with subnets in each virtual cloud network (VCN) do not have the appropriate ingress rules
• B. Identity and Access Management (IAM) policies have not been defined to allow connectivity across the two VCNs in different regions
• C. A local peering gateway needs to be created in each VCN with a default route rule added in the route table forwarding the traffic to the local peering gateway
• D. An internet gateway needs to be created in each VCN with a default route rule added in the route table forwarding the traffic to the internet gateway
• E. The route table associated with subnets in each VCN do not have a route rule defined to forward the traffic to their respective DRGs

Correct answer: A, E

Explanation

Option A is correct because if the security lists do not allow the necessary ingress traffic, workloads won't be able to communicate. Option E is also correct since the route table must have a rule to direct traffic to the DRGs for proper connectivity. Options B, C, and D are incorrect as they do not address the immediate issues of security rules and routing needed for inter-region communication.