NGFW-Engineer PAN OS Device Setting Configuration Practice Question
Which TWO of the following are valid methods for an administrator to authenticate to the Palo Alto Networks firewall management plane?
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
✓
Local Database
Administrators can authenticate using local database accounts or external services like RADIUS or TACACS+.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Local Database
Why this is correct
Local authentication is a standard built-in feature.
- ✗
DNS
Why it's wrong here
DNS is for name resolution, not authentication.
- ✓
RADIUS
Why this is correct
RADIUS is a supported external authentication protocol.
- ✗
DHCP
Why it's wrong here
DHCP is for IP address assignment.
- ✗
NTP
Why it's wrong here
NTP is for time synchronization.
Quick reference
AAA Protocol Comparison
| Protocol | Port(s) | Encryption | Transport | Primary Use |
|---|---|---|---|---|
| RADIUS | 1812 / 1813 | Password only | UDP | Network access control |
| TACACS+ | 49 | Full packet | TCP | Device administration |
| Diameter | 3868 | Full session | TCP / SCTP | Carrier / mobile networks |
| 802.1X | — | EAP-based | Layer 2 | Port-based access control |
TACACS+ encrypts the entire packet; RADIUS only encrypts the password field — a key exam distinction.
About these practice questions
Courseiva writes every NGFW-Engineer question from scratch — 190 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 NGFW-Engineer 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 NGFW-Engineer exam.