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PCNSA Practice Question: Which three components are part of the Palo Alto…
Which three components are part of the Palo Alto Networks Next-Generation Firewall architecture? (Choose three.)
⚠ Common exam trap
Candidates often confuse features or management tools (like Policy Optimizer or GlobalProtect VPN) with the core architectural components that define the NGFW's processing model, such as the single-pass engine and decoupled planes.
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
✓
Application ID engine
The Application ID engine is a core component of Palo Alto Networks Next-Generation Firewall architecture because it performs deep packet inspection to identify applications regardless of port, protocol, or encryption. This allows the firewall to apply security policies based on the application identity rather than traditional port-based rules, enabling granular control over traffic.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Application ID engine
Why this is correct
App-ID identifies applications regardless of port.
- ✓
Single-pass software architecture
Why this is correct
Single-pass processing inspects traffic once for multiple functions.
- ✗
Policy optimizer
Why it's wrong here
Policy optimizer is a tool, not a core architecture component.
- ✗
GlobalProtect VPN
Why it's wrong here
GlobalProtect is a feature, not a foundational architecture component.
- ✓
Decoupled control and data plane
Why this is correct
Decoupled planes allow for scalability and resilience.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNSA 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 PCNSA exam.