NetSec-Pro Infrastructure Management And CDSS Practice Question
What is the primary function of the 'DNS Sinkhole' feature in a DNS Security profile?
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
✓
To redirect requests for malicious domains to a specific IP address to alert the administrator.
DNS Sinkhole redirects a malicious DNS query to a fake IP address to identify compromised hosts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
To encrypt DNS traffic between the firewall and the ISP.
Why it's wrong here
This is the function of DoH (DNS over HTTPS) or DNS over TLS.
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To allow a firewall to act as a DNS server for internal clients.
Why it's wrong here
This is the function of the DNS Proxy feature.
- ✗
To cache DNS queries to improve network performance.
Why it's wrong here
This is the function of a standard DNS cache, not a sinkhole.
- ✓
To redirect requests for malicious domains to a specific IP address to alert the administrator.
Why this is correct
Sinkholing is used to identify and log clients attempting to resolve malicious domains.
Visual reference
About these practice questions
Courseiva writes every NetSec-Pro question from scratch — 191 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-Pro 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-Pro exam.