NetSec-Architect Practice Question: Multi Cloud And Hybrid Network Security Architecture
An architect is troubleshooting a high availability (HA) split-brain scenario in an active/passive VM-Series deployment in a public cloud. Which THREE factors or misconfigurations typically cause split-brain conditions in cloud HA environments? (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
✓
Misconfigured path monitoring that fails to detect upstream routing failures.
Split-brain in cloud HA can be caused by blocking HA communication ports in security groups, intermittent packet loss on HA1/HA2 links, or misconfigured path monitoring failing to trigger state changes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Running different PAN-OS minor patch versions on the HA pair for an extended period.
Why it's wrong here
While version mismatches cause warnings, HA heartbeat mechanisms function independently of minor maintenance patches.
- ✓
Misconfigured path monitoring that fails to detect upstream routing failures.
Why this is correct
Improper path monitoring prevents the active unit from stepping down when isolated.
- ✗
Using identical MAC addresses on all data plane interfaces without cloud hypervisor support.
Why it's wrong here
Cloud hypervisors virtualize MAC addresses and do not cause HA split-brain directly in this manner.
- ✓
Excessive packet loss or high latency on the dedicated HA heartbeat network path.
Why this is correct
High latency or packet loss causes missed heartbeats and false failover triggers.
- ✓
Network Security Groups or firewall rules blocking UDP/TCP ports used for HA1 and HA2 communication.
Why this is correct
Blocked HA ports prevent heartbeat messages, leading to both nodes assuming the active role.
About these practice questions
Courseiva writes every NetSec-Architect question from scratch — 228 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or 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 Palo Alto Networks exam blueprint
This NetSec-Architect practice question is part of Courseiva's free Palo Alto Networks 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 NetSec-Architect exam.