PCNSE Securing Traffic and App-ID Practice Question
A network administrator wants to ensure that all traffic traversing the firewall is correctly identified by App-ID before any security policies are evaluated. Which step is essential?
⚠ Common exam trap
Many exam-takers confuse enabling App-ID on interfaces (a prerequisite) with the essential step of actually using App-ID in security rules, leading them to select Option A instead of D.
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
✓
Ensure App-ID is enabled in the security policy rules.
App-ID must be enabled within the security policy rule itself to ensure traffic is identified before policy evaluation. While enabling App-ID on interfaces (Option A) is a prerequisite, the essential step is to configure the security rule to use App-ID as a match criterion; otherwise, the firewall will not perform application identification for that rule. This guarantees that App-ID classification occurs prior to any allow/deny decisions.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable App-ID on the firewall interfaces.
Why it's wrong here
App-ID is not enabled on interfaces; it's a policy-level feature.
- ✗
Configure security zones properly.
Why it's wrong here
Zones define trust boundaries but do not affect App-ID functionality.
- ✗
Enable Threat Prevention profiles.
Why it's wrong here
Threat prevention is separate from application identification.
- ✓
Ensure App-ID is enabled in the security policy rules.
Why this is correct
App-ID is applied per rule; enabling it ensures identification occurs.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNSE 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 PCNSE exam.