PCNSA Securing Traffic Practice Question
Exhibit
Refer to the exhibit. admin@PA-500> show running nat-policy Rules: 1. name: source-nat-1 source: 10.0.0.0/8 destination: any service: any source-translation: interface-ip-address (ethernet1/2) action: dynamic-ip-and-port 2. name: no-nat-for-servers source: 10.0.0.0/8 destination: 192.168.1.0/24 service: any action: no-nat
A workstation at 10.0.0.5 sends traffic to destination 8.8.8.8. Which NAT rule will be applied?
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
✓
Rule 1: source-nat-1
Rule 1 matches first because the source 10.0.0.5 falls within the source range (10.0.0.0/8) and the destination 8.8.8.8 is not excluded by the exception rule (which only excludes 192.168.1.0/24). Therefore, Rule 1 is applied and performs source NAT to the interface IP. Option A is incorrect because Rule 2 is a no-NAT rule that would only apply if the destination matched 192.168.1.0/24, which it does not. Option B is incorrect because only the first matching rule is applied; NAT rules are processed in order. Option C is incorrect because Rule 1 does match.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Rule 2: no-nat-for-servers
Why it's wrong here
Destination 8.8.8.8 is not in 192.168.1.0/24.
- ✗
Both rules are applied.
Why it's wrong here
Only the first matching rule is applied.
- ✗
No NAT rule matches; traffic is not translated.
Why it's wrong here
Rule 1 matches.
- ✓
Rule 1: source-nat-1
Why this is correct
Rule 1 matches the source and destination, and since rule 2's destination does not match, rule 1 is applied.
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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.