1Z0-1072-26 Networking Practice Question
You are troubleshooting a web application where users are reporting intermittent connection failures when accessing your OCI Public Load Balancer. You check the load balancer metrics and notice that the `DroppedConnections` metric is spiking. What is the most likely cause?
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
✓
The load balancer has reached its maximum bandwidth or connection rate limit, or backend instances are overwhelmed.
Dropped connections on an OCI Load Balancer typically occur when the load balancer or backend servers reach capacity limits, or security lists/NSGs drop packets due to rate limiting or connection tracking limits.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
The load balancer has reached its maximum bandwidth or connection rate limit, or backend instances are overwhelmed.
Why this is correct
Reaching bandwidth or connection limits causes the load balancer to drop incoming connections.
- ✗
The NAT Gateway is misconfigured.
Why it's wrong here
NAT Gateways do not process incoming load balancer connections.
- ✗
The VCN route table is missing a default route.
Why it's wrong here
A missing route would cause complete connection failure, not spiking dropped connection metrics under load.
- ✗
The DNS record has an incorrect TTL.
Why it's wrong here
DNS TTL affects caching, not active TCP connection drops on the load balancer.
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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 1Z0-1072-26 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 1Z0-1072-26 exam.