- A
Create an address group and add individual address objects for each server IP.
Why wrong: This is manual and not efficient; it requires creating and managing many objects.
- B
Create a single address object with IP range 192.168.10.1-192.168.10.254.
Why wrong: A range object is less efficient because it requires manual specification of start and end addresses; a subnet object is simpler for a contiguous block.
- C
Create a single address object with IP subnet 192.168.10.0/24.
A subnet address object directly represents the entire subnet and is the most efficient method.
- D
Create a dynamic address group using tags applied to individual address objects.
Tags allow dynamic grouping; adding tags to address objects automatically populates the group, providing flexibility.
- E
Create a predefined address object from the global cache.
Why wrong: There is no 'predefined address object from global cache' concept in Palo Alto firewalls.
Quick Answer
The answer is creating a dynamic address group using tags applied to individual address objects, along with directly using the subnet 192.168.10.0/24 as an address object. These two methods provide efficient address object management for server subnets because the subnet object covers all hosts in a contiguous block with a single entry, while the dynamic group leverages tags to automatically include or exclude servers based on attributes, eliminating manual updates when servers are added or removed. On the PCNSA exam, this question tests your understanding of scalable object design versus static, labor-intensive approaches like creating individual host objects or using ranges, which are less suited for subnet-level grouping. A common trap is overlooking that a dynamic address group requires tags on individual objects, not on the subnet object itself. Memory tip: think “subnet for static coverage, tags for flexible grouping”—the subnet object is your blanket, tags are your sticky notes.
PCNSA Managing Objects Practice Question
This PCNSA practice question tests your understanding of managing objects. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
A security administrator needs to create address objects for a group of servers that share the same subnet 192.168.10.0/24. Which TWO methods can be used to efficiently manage these objects in Palo Alto Networks firewall configuration?
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
Create a single address object with IP subnet 192.168.10.0/24.
Option C directly uses the subnet as an address object, which is efficient for a contiguous subnet. Option D uses a dynamic address group with tags, allowing flexible grouping without manual updates. Option A uses a range, which is less efficient for a subnet. Option B requires creating multiple individual objects. Option E is not a valid concept.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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 an address group and add individual address objects for each server IP.
Why it's wrong here
This is manual and not efficient; it requires creating and managing many objects.
- ✗
Create a single address object with IP range 192.168.10.1-192.168.10.254.
Why it's wrong here
A range object is less efficient because it requires manual specification of start and end addresses; a subnet object is simpler for a contiguous block.
- ✓
Create a single address object with IP subnet 192.168.10.0/24.
Why this is correct
A subnet address object directly represents the entire subnet and is the most efficient method.
Related concept
CIDR notation defines the prefix length.
- ✓
Create a dynamic address group using tags applied to individual address objects.
Why this is correct
Tags allow dynamic grouping; adding tags to address objects automatically populates the group, providing flexibility.
Related concept
CIDR notation defines the prefix length.
- ✗
Create a predefined address object from the global cache.
Why it's wrong here
There is no 'predefined address object from global cache' concept in Palo Alto firewalls.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PCNSA subnetting questions on CIDR, address ranges, and subnet selection.
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Managing Objects — 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?
Managing Objects — This question tests Managing Objects — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Create a single address object with IP subnet 192.168.10.0/24. — Option C directly uses the subnet as an address object, which is efficient for a contiguous subnet. Option D uses a dynamic address group with tags, allowing flexible grouping without manual updates. Option A uses a range, which is less efficient for a subnet. Option B requires creating multiple individual objects. Option E is not a valid concept.
What should I do if I get this PCNSA question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PCNSA subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
About these practice questions
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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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