- A
Virtual wire mode with SSL Forward Proxy
Why wrong: Virtual wire mode is transparent and does not support SSL decryption.
- B
Explicit proxy with SSL Forward Proxy decryption
Explicit proxy mode lets the firewall act as a forward proxy and perform SSL decryption for inspection.
- C
Transparent proxy with a forward trust certificate
Why wrong: Transparent proxy intercepts traffic without explicit configuration but SSL decryption still requires an explicit proxy configuration.
- D
Layer 3 mode with a policy-based forwarding rule
Why wrong: Policy-Based Forwarding can redirect traffic but does not enable SSL decryption automatically.
Question 244 of 529
PCNSA Core Concepts Practice Question
This PCNSA practice question tests your understanding of core concepts. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to ensure that all internet-bound HTTP traffic is decrypted for inspection before being forwarded to the next-generation firewall for policy enforcement. Which deployment method should be used?
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
✓
Explicit proxy with SSL Forward Proxy decryption
B is correct because an explicit proxy deployment requires clients to be configured to send HTTP traffic to the firewall's proxy IP, which allows the firewall to terminate the client connection, perform SSL Forward Proxy decryption using a forward trust certificate, and then re-encrypt the traffic for inspection before forwarding it to the next-generation firewall for policy enforcement. This method ensures that all internet-bound HTTP traffic is decrypted for inspection, as the firewall acts as an intermediary between the client and the destination server.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Virtual wire mode with SSL Forward Proxy
Why it's wrong here
Virtual wire mode is transparent and does not support SSL decryption.
- ✓
Explicit proxy with SSL Forward Proxy decryption
- ✗
Transparent proxy with a forward trust certificate
Why it's wrong here
Transparent proxy intercepts traffic without explicit configuration but SSL decryption still requires an explicit proxy configuration.
- ✗
Layer 3 mode with a policy-based forwarding rule
Why it's wrong here
Policy-Based Forwarding can redirect traffic but does not enable SSL decryption automatically.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Palo Alto Networks often tests the misconception that transparent proxy or virtual wire mode can perform SSL decryption without explicit client configuration, but the trap here is that only explicit proxy with SSL Forward Proxy decryption guarantees the firewall can terminate and decrypt all HTTP traffic as an intermediary, whereas other modes require additional configuration or lack the ability to act as a proxy endpoint.
Detailed technical explanation
How to think about this question
In an explicit proxy deployment, the firewall acts as an HTTP proxy, and clients must be configured to use the firewall's IP address and port (e.g., 8080) for HTTP requests. When SSL Forward Proxy decryption is enabled, the firewall generates a forward trust certificate that is installed on clients, allowing it to intercept HTTPS traffic by performing a man-in-the-middle (MITM) decryption, where it decrypts the client's request, inspects the content, and then re-encrypts the traffic to the destination server. This ensures that all internet-bound HTTP and HTTPS traffic is decrypted for inspection before policy enforcement, which is critical for detecting threats like malware or data exfiltration in encrypted traffic.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the PCNSA exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this PCNSA question test?
Core Concepts — This question tests Core Concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Explicit proxy with SSL Forward Proxy decryption — B is correct because an explicit proxy deployment requires clients to be configured to send HTTP traffic to the firewall's proxy IP, which allows the firewall to terminate the client connection, perform SSL Forward Proxy decryption using a forward trust certificate, and then re-encrypt the traffic for inspection before forwarding it to the next-generation firewall for policy enforcement. This method ensures that all internet-bound HTTP traffic is decrypted for inspection, as the firewall acts as an intermediary between the client and the destination server.
What should I do if I get this PCNSA question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
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.
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