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Managing Objects →hardMultiple ChoiceObjective-mapped

PCNSA Managing Objects Practice Question

This PCNSA practice question tests your understanding of managing objects. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 organization has a data center with servers in the 10.10.0.0/16 subnet and remote users who connect via GlobalProtect. The security team wants to ensure that only approved applications (web-browsing, ssl, dns) are allowed from the remote user subnet (172.16.0.0/24) to the data center. They create a security rule with source zone 'GP' (GlobalProtect), destination zone 'DC', source address '172.16.0.0/24', destination address '10.10.0.0/16', application 'web-browsing', 'ssl', 'dns', action 'allow'. After deployment, users complain that they cannot access a custom web application on port 8080, which uses HTTP but the application is identified as 'web-browsing'. The administrator checks the traffic logs and sees that the traffic is being denied by an implicit deny rule. What is the most likely cause?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

A
The application 'web-browsing' does not cover port 8080 traffic.
App-ID identifies traffic based on signatures, not just port. Custom HTTP on 8080 may not match 'web-browsing' signature, so it is not allowed.
B
The rule order is incorrect; a previous rule is denying the traffic.
Why wrong: The logs show implicit deny, which is the default rule at the end, indicating no matching allow rule.
C
The destination address object 10.10.0.0/16 is incorrect.
Why wrong: The subnet appears correct for the data center.
D
The source zone 'GP' should be 'untrust'.
Why wrong: GlobalProtect typically uses a dedicated zone 'GP'.

Full breakdown with real-world context →

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

✓

The application 'web-browsing' does not cover port 8080 traffic.

The custom web application on port 8080 is identified as 'web-browsing' by App-ID, but the security rule uses the application object 'web-browsing', which by default only includes standard HTTP ports (80 and 443). Therefore, traffic on port 8080 does not match the rule's application condition, even though the App-ID identifies it as web-browsing. To allow this traffic, the administrator would need to either use a custom application that includes port 8080 or add a service object to the rule.

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.

✓
The application 'web-browsing' does not cover port 8080 traffic.
Why this is correct
App-ID identifies traffic based on signatures, not just port. Custom HTTP on 8080 may not match 'web-browsing' signature, so it is not allowed.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The rule order is incorrect; a previous rule is denying the traffic.
Why it's wrong here
The logs show implicit deny, which is the default rule at the end, indicating no matching allow rule.
✗
The destination address object 10.10.0.0/16 is incorrect.
Why it's wrong here
The subnet appears correct for the data center.
✗
The source zone 'GP' should be 'untrust'.
Why it's wrong here
GlobalProtect typically uses a dedicated zone 'GP'.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates assume 'web-browsing' covers all HTTP traffic regardless of port, but Palo Alto Networks firewalls enforce application identification based on default port definitions, and non-standard ports require explicit configuration.

Trap categories for this question

Command / output trap
The logs show implicit deny, which is the default rule at the end, indicating no matching allow rule.

Detailed technical explanation

How to think about this question

Palo Alto Networks firewalls use App-ID to identify traffic based on application signatures, not just port numbers. The 'web-browsing' application is a container that includes HTTP and HTTPS traffic on standard ports (80, 443) and may also include other common ports, but port 8080 is not typically included unless explicitly added via custom application or service override. In a real-world scenario, administrators must either create a custom application for the non-standard port or use a service/port-based rule if App-ID cannot identify the application correctly.

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 security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.

Visual reference

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?

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: The application 'web-browsing' does not cover port 8080 traffic. — The custom web application on port 8080 is identified as 'web-browsing' by App-ID, but the security rule uses the application object 'web-browsing', which by default only includes standard HTTP ports (80 and 443). Therefore, traffic on port 8080 does not match the rule's application condition, even though the App-ID identifies it as web-browsing. To allow this traffic, the administrator would need to either use a custom application that includes port 8080 or add a service object to the rule.

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.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

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.