This PCNSA practice question tests your understanding of managing objects. 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.
An administrator needs to create a service group for a custom application that uses TCP ports 1000 and 2000. Which two methods will successfully create a service group that can be used in a single security rule? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a service group with two service objects (one for 1000, one for 2000)
Option C is correct because a service group in Palo Alto Networks firewalls can contain multiple service objects, allowing you to combine TCP ports 1000 and 2000 into a single group that can be referenced in one security rule. This enables the firewall to match traffic to either port within the same rule, simplifying policy management.
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.
✗
Create a service object with port range 1000-2000
Why it's wrong here
This would allow all ports between 1000 and 2000, not just the two specific ports.
✗
Create a service object with port 1000 and use an application override
Why it's wrong here
Application override does not create a service group; it reclassifies traffic.
✓
Create a service group with two service objects (one for 1000, one for 2000)
Why this is correct
This groups the two service objects into a single group for use in a rule.
Related concept
Read the scenario before looking for a memorised answer.
✓
Create a custom application that includes both ports
Why this is correct
A custom application can define multiple ports and be used in a single rule.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a single service object with port 1000 and a separate rule for port 2000
Why it's wrong here
This requires two rules, not a single rule.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse a service group with a port range object, assuming that a range like 1000-2000 is equivalent to specifying only the endpoints, but in reality, it includes every port in between.
Detailed technical explanation
How to think about this question
Service groups in PAN-OS are logical containers that aggregate multiple service objects, each defined by a protocol (TCP/UDP) and a specific port or port range. When a service group is used in a security rule, the firewall evaluates traffic against all member service objects using an OR logic, meaning traffic matching any member port is permitted or denied. This is distinct from using a port range object, which matches all ports within the range, potentially allowing unintended traffic on intermediate ports like 1500.
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.
Managing Objects — This question tests Managing Objects — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a service group with two service objects (one for 1000, one for 2000) — Option C is correct because a service group in Palo Alto Networks firewalls can contain multiple service objects, allowing you to combine TCP ports 1000 and 2000 into a single group that can be referenced in one security rule. This enables the firewall to match traffic to either port within the same rule, simplifying policy management.
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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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
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