- A
Enable hardware acceleration for packet processing
Hardware acceleration offloads processing to specialized chips, reducing CPU load.
- B
Use reactive policy updates via API
Why wrong: Reactive updates can cause CPU spikes and are not recommended for performance.
- C
Reduce log verbosity for allowed traffic
Logging requires CPU and disk I/O; reducing log volume lowers load.
- D
Disable unused security profiles
Unused profiles still consume resources during policy lookup; disabling them reduces overhead.
- E
Enable SSL decryption for all traffic
Why wrong: SSL decryption is computationally intensive and increases CPU load.
Question 302 of 529
PCNSA Core Concepts Practice Question
This PCNSA practice question tests your understanding of core concepts. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which THREE actions can improve firewall performance by reducing CPU load? (Choose three.)
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
✓
Enable hardware acceleration for packet processing
Options A, C, D are correct. Enabling hardware acceleration offloads packet processing from the CPU, reducing load. Reducing log verbosity for allowed traffic lowers I/O and processing overhead. Disabling unused security profiles frees up resources. Option B is incorrect because reactive policy updates via API can introduce additional processing, not reduce CPU load. Option E is incorrect because enabling SSL decryption for all traffic significantly increases CPU load due to encryption/decryption overhead.
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.
- ✓
Enable hardware acceleration for packet processing
Why this is correct
Hardware acceleration offloads processing to specialized chips, reducing CPU load.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use reactive policy updates via API
Why it's wrong here
Reactive updates can cause CPU spikes and are not recommended for performance.
- ✓
Reduce log verbosity for allowed traffic
Why this is correct
Logging requires CPU and disk I/O; reducing log volume lowers load.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Disable unused security profiles
Why this is correct
Unused profiles still consume resources during policy lookup; disabling them reduces overhead.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable SSL decryption for all traffic
Why it's wrong here
SSL decryption is computationally intensive and increases CPU load.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- 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 PCNSA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Core Concepts — study guide chapter
Learn the concepts, then practise the questions
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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: Enable hardware acceleration for packet processing — Options A, C, D are correct. Enabling hardware acceleration offloads packet processing from the CPU, reducing load. Reducing log verbosity for allowed traffic lowers I/O and processing overhead. Disabling unused security profiles frees up resources. Option B is incorrect because reactive policy updates via API can introduce additional processing, not reduce CPU load. Option E is incorrect because enabling SSL decryption for all traffic significantly increases CPU load due to encryption/decryption overhead.
What should I do if I get this PCNSA question wrong?
Identify which PCNSA exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 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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