Cybersecurity-Practitioner Endpoint Security Practice Question
An administrator observes that several Cortex XDR agents are showing a 'Disconnected' status in the management console. After verifying network connectivity, the administrator suspects that communication is blocked by an intermediate firewall. Which TCP port must be open outbound from the endpoints to the Cortex XDR server?
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
✓
TCP port 443 exclusively
Cortex XDR agents communicate outbound to the cloud tenant primarily over TCP port 443.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
TCP port 22 and TCP port 23 for remote management
Why it's wrong here
SSH and Telnet are not used by Cortex XDR agents.
- ✗
TCP port 389 and TCP port 636 for directory sync
Why it's wrong here
LDAP ports are used for directory integration, not agent connectivity.
- ✓
TCP port 443 exclusively
Why this is correct
Outbound TCP port 443 is required for agent-to-server communication in Cortex XDR.
- ✗
TCP port 80 and TCP port 443
Why it's wrong here
Port 80 is not required; HTTPS over port 443 is strictly used for secure communication.
About these practice questions
Courseiva writes every Cybersecurity-Practitioner question from scratch — 206 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 Cybersecurity-Practitioner 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 Cybersecurity-Practitioner exam.