1Z0-1085-26 Core Oci Services Practice Question
An enterprise has two VCNs in the same OCI region. VCN-A needs to communicate with VCN-B. The VCN CIDR blocks do not overlap. The administrator configures a Local Peering Gateway (LPG) on VCN-A and another on VCN-B, and establishes the peer connection. However, instances in VCN-A still cannot reach instances in VCN-B. What additional step is required?
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
✓
Add route rules in the respective subnet route tables pointing the peer VCN's CIDR block to the LPG target.
Peering gateways require explicit route rules in the subnet route tables pointing traffic destined for the peer VCN CIDR to the local LPG.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Modify the default Security List to allow inbound traffic from the same VCN CIDR.
Why it's wrong here
Security lists control packet inspection, but without route rules, packets will never reach the LPG.
- ✗
Attach an Internet Gateway to both VCNs to route traffic between them.
Why it's wrong here
Internet Gateways route traffic to the public internet, not across private local peering connections.
- ✗
Create a Dynamic Routing Gateway (DRG) and attach both VCNs to it.
Why it's wrong here
Local peering can be done directly via LPGs without a DRG if they are in the same region.
- ✓
Add route rules in the respective subnet route tables pointing the peer VCN's CIDR block to the LPG target.
Why this is correct
Route table rules are mandatory for directing traffic into the Local Peering Gateway.
Visual reference
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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 1Z0-1085-26 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 1Z0-1085-26 exam.