The answer is 10.0.0.1. This is correct because the default gateway for a firewall is determined by the default route in the routing table, which is the route with a destination of 0.0.0.0/0; in the exhibit, that route points to next-hop 10.0.0.1, making it the gateway for all non-local traffic. On the Palo Alto Networks Certified Network Security Administrator PCNSA exam, this concept tests your ability to determine default gateway from routing table entries, often presented in a show route output or exhibit where a static default route is configured. A common trap is confusing the firewall’s management interface IP with the default gateway—remember, the gateway is always the next-hop IP of the 0.0.0.0/0 route, not an interface address. Memory tip: “Zero-zero points to the gateway you know.”
PCNSA Device Management and Services Practice Question
This PCNSA practice question tests your understanding of device management and services. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
Exhibit
admin@PA-5000> show routing route
-----------------------------------------
Flags: A: Active, C: Candidate, S: Static, D: Dynamic, R: RIP, O: OSPF
---[Virtual Router default]---
Destination Next Hop Interface Flags
0.0.0.0/0 10.0.0.1 ethernet1/1 A S
10.0.0.0/24 0.0.0.0 ethernet1/1 A C
Refer to the exhibit. What is the default gateway of the firewall?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
10.0.0.1
The default gateway for a firewall is the IP address of the next-hop router that the firewall uses to reach networks not directly connected. In the exhibit, the route with destination 0.0.0.0/0 (the default route) points to next-hop 10.0.0.1, making 10.0.0.1 the default gateway. This is the standard behavior in PAN-OS: the default gateway is defined by the static default route, not by an interface IP.
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.
10.0.0.0/24 is a directly connected network, not a default gateway.
✗
0.0.0.0
Why it's wrong here
0.0.0.0/0 is the destination prefix, not the next hop.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Palo Alto Networks often tests the distinction between the default route's destination (0.0.0.0/0) and the next-hop IP address, causing candidates to mistakenly select 0.0.0.0 as the gateway.
Detailed technical explanation
How to think about this question
In PAN-OS, the default gateway is configured either via a static route with destination 0.0.0.0/0 or via DHCP on a management interface. The firewall uses the routing table to determine the next hop for outbound traffic; if no specific route matches, the default route (0.0.0.0/0) is used. This is consistent with RFC 1812, where the default gateway is the router that handles packets destined for unknown networks.
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 small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
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.
Device Management and Services — This question tests Device Management and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 10.0.0.1 — The default gateway for a firewall is the IP address of the next-hop router that the firewall uses to reach networks not directly connected. In the exhibit, the route with destination 0.0.0.0/0 (the default route) points to next-hop 10.0.0.1, making 10.0.0.1 the default gateway. This is the standard behavior in PAN-OS: the default gateway is defined by the static default route, not by an interface IP.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.