1Z0-997-25 Question 128
Select 2You have set up Oracle Interconnect for Google Cloud to build a private, low-latency link between your Oracle Cloud Infrastructure (OCI) environment and an Oracle Database hosted on a Google Compute Engine instance in Google Cloud. You created the necessary Virtual Cloud Network (VCN) and Dynamic Routing Gateway (DRG) in OCI, as well as a VPC and Cloud Router in Google Cloud, including a VLAN attachment for the interconnect. However, your OCI workloads still cannot reach the database. Which two steps must you complete to properly route traffic between OCI and your Oracle Database on Google Cloud?
- A
Configure a route rule in the DRG route table directing traffic to the Google Cloud subnets over the interconnect.
- B
Enable BGP route advertisements in the Cloud Router for the Google Cloud subnets and confirm these routes are learned in OCI.
- C
Create an Internet Gateway on OCI and forward traffic from the VCN to Google Cloud through this Internet Gateway.
- D
Implement a NAT Gateway in Google Cloud to translate the IP addresses of the OCI subnets.
Show answer and explanation
Correct answers: A, B
Explanation
When implementing Oracle Interconnect for Google Cloud with an Oracle Database running on Google Compute Engine, you must configure routing properly on both OCI and Google Cloud. In OCI, the DRG route table must explicitly include a route for the Google Cloud subnet(s) via the interconnect. On the Google Cloud side, your Cloud Router must advertise the local subnet routes to OCI. Following Oracle and Google step-by-step documentation ensures a correct, private path without relying on an Internet Gateway or NAT Gateway. Refer to Oracle Interconnect for Google Cloud setup guides for the detailed steps on setting up VLAN attachments, route tables, and BGP advertisements.
- A. Correct.
Configuring a route rule in the DRG route table is essential. You must explicitly define that traffic destined for the Google Cloud subnet range should be routed via the interconnect so OCI knows where to send packets for that subnet.
- B. Correct.
BGP route advertisement is required for each side to propagate subnet routes to the other. Enabling BGP in Cloud Router ensures your Google Cloud subnets are advertised to OCI, and vice versa, allowing end-to-end routing.
- C. Incorrect.
An Internet Gateway is used for routing to or from the public internet, not for private connectivity between OCI and Google Cloud. Relying on this would break the private interconnect architecture.
- D. Incorrect.
A NAT Gateway is not necessary if the traffic is fully private and natively routed using BGP. NAT typically helps internal resources reach external services or vice versa, but not for private, routed inter-site connectivity.