1Z0-997-26 Multicloud And Hybrid Practice Question
Your organization is implementing a multicloud strategy where workloads in OCI must securely communicate with workloads in AWS over a private connection. You decide to set up a third-party software virtual appliance (VPN gateway) inside an OCI VCN. What specific VCN configuration change is required to ensure that return traffic from OCI compute instances correctly routes back through the virtual appliance instance?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Disable 'Source/Destination Check' on the virtual appliance's VNIC and update the VCN route table to point traffic to the appliance's private IP.
When deploying third-party firewall or routing appliances in OCI to handle hybrid or multicloud traffic, you must disable 'Source/Destination Check' on the VNIC of the appliance instance so it can forward traffic not addressed to it directly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure a Local Peering Gateway on the appliance subnet.
Why it's wrong here
Local Peering Gateways are strictly for peering VCNs within OCI.
- ✓
Disable 'Source/Destination Check' on the virtual appliance's VNIC and update the VCN route table to point traffic to the appliance's private IP.
Why this is correct
Disabling Source/Destination Check allows the virtual appliance to act as a router/firewall forwarding packets across networks.
- ✗
Enable 'Source/Destination Check' on the virtual appliance's VNIC.
Why it's wrong here
Enabling the check will cause OCI to drop packets where the appliance is not the direct source or destination.
- ✗
Attach an Internet Gateway to the virtual appliance instance to route packets to AWS.
Why it's wrong here
An Internet Gateway routes traffic to the public internet, not a private multicloud connection.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Oracle exam blueprint
This 1Z0-997-26 practice question is part of Courseiva's free Oracle certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 1Z0-997-26 exam.