1Z0-1085-26 Core Oci Services Practice Question
You are troubleshooting intermittent packet drops between two subnets in different VCNs connected via a Local Peering Gateway (LPG). Both VCNs have non-overlapping CIDR blocks. What is a common misconfiguration that could cause this issue?
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
✓
Missing route table entries directing traffic to the Local Peering Gateway in both VCNs
VCN route tables must have rules pointing traffic destined for the peer VCN CIDR block to the Local Peering Gateway.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Using security lists instead of Network Security Groups
Why it's wrong here
Both security lists and NSGs can be configured correctly; security mechanism type doesn't prevent routing if properly configured.
- ✓
Missing route table entries directing traffic to the Local Peering Gateway in both VCNs
Why this is correct
Without route table entries pointing to the LPG, traffic cannot find its way across the peering connection.
- ✗
Attaching an Internet Gateway to the peering connection
Why it's wrong here
Internet Gateways are not required for local VCN peering.
- ✗
Enabling Flow Logs on the subnets
Why it's wrong here
Flow logs record traffic metadata and do not drop packets.
Visual reference
About these practice questions
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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.