EX280 Networking And Network Policies Practice Question
When troubleshooting network policies or container connectivity in an OVN-Kubernetes environment, which THREE tools or logs are useful for diagnosing packet drops and flow issues? (Choose THREE)
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
✓
Querying the OVN southbound database using ovn-sbctl
OVN-Kubernetes logs, node ovn-controller logs, and ovn-sbctl are key diagnostic tools.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Querying the OVN southbound database using ovn-sbctl
Why this is correct
ovn-sbctl inspects logical flows and datapath bindings.
- ✗
Running systemctl restart firewalld on all worker nodes simultaneously
Why it's wrong here
Restarting firewalld disrupts node networking and is not a standard troubleshooting tool for OVN flows.
- ✓
Checking logs of the ovn-controller pods in the openshift-ovn-kubernetes namespace
Why this is correct
ovn-controller logs on nodes show local OpenFlow and flow installation details.
- ✗
Editing the master /etc/hosts file to add custom pod IP mappings
Why it's wrong here
Static /etc/hosts edits do not resolve dynamic pod network routing or policy drops.
- ✓
Reviewing network policy controller logs within the cluster-kube-apiserver or network operator
Why this is correct
Network policy controller logs indicate whether policy objects are successfully parsed and applied.
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 Red Hat exam blueprint
This EX280 practice question is part of Courseiva's free Red Hat 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 EX280 exam.