1Z0-997-26 Observability Practice Question
You are troubleshooting a networking issue where virtual machines in a private subnet cannot communicate with an external endpoint over the internet. You suspect security lists or network security groups might be dropping the packets. Which OCI observability feature can help verify whether packets are being accepted or rejected at the VNIC level?
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
✓
OCI VCN Flow Logs
OCI VCN Flow Logs record accepted and rejected traffic flowing through VNICs, helping troubleshoot security list and NSG rules.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
OCI Health Checks ping monitors
Why it's wrong here
Incorrect. Health Checks test external endpoint reachability, not internal VNIC packet disposition.
- ✓
OCI VCN Flow Logs
Why this is correct
Correct. VCN Flow Logs capture metadata about traffic flowing to and from VNICs, including whether packets were accepted or rejected.
- ✗
OCI Monitoring service VNIC packet counters
Why it's wrong here
Incorrect. Monitoring provides aggregate throughput metrics for VNICs, not per-packet accept/reject flow log analysis.
- ✗
OCI Network Firewall system logs
Why it's wrong here
Incorrect. Network Firewall logs apply when using the managed firewall service, but standard VCN VNIC traffic visibility is captured by VCN Flow Logs.
Visual reference
About these practice questions
This 1Z0-997-26 question is part of Courseiva's 348-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
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.