- A
They can be attached to any GCP resource, including Compute Engine instances.
Why wrong: Cloud Armor policies attach only to load balancers.
- B
They support both allow and deny actions for incoming requests.
Rules can allow or deny traffic based on conditions.
- C
They are evaluated after the firewall rules.
Why wrong: Cloud Armor policies are evaluated at the load balancer, before traffic reaches the VPC firewall.
- D
They cannot be used with internal load balancers.
Why wrong: They can be used with external HTTPS Load Balancers; internal load balancers are not supported.
Question 163 of 1,000
PCNE Implementing VPC Instances Practice Question
This PCNE practice question tests your understanding of implementing vpc instances. 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.
Which statement about Cloud Armor security policies is true?
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
✓
They support both allow and deny actions for incoming requests.
Cloud Armor security policies can be attached to HTTPS Load Balancers. They support rules with conditions like IP addresses, geographic regions, and preconfigured WAF rules. They also support rate limiting.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
They can be attached to any GCP resource, including Compute Engine instances.
Why it's wrong here
Cloud Armor policies attach only to load balancers.
- ✓
They support both allow and deny actions for incoming requests.
Why this is correct
Rules can allow or deny traffic based on conditions.
Related concept
Standard ACLs match source addresses.
- ✗
They are evaluated after the firewall rules.
Why it's wrong here
Cloud Armor policies are evaluated at the load balancer, before traffic reaches the VPC firewall.
- ✗
They cannot be used with internal load balancers.
Why it's wrong here
They can be used with external HTTPS Load Balancers; internal load balancers are not supported.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PCNE ACL questions on filtering logic and placement.
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Implementing VPC Instances — study guide chapter
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FAQ
Questions learners often ask
What does this PCNE question test?
Implementing VPC Instances — This question tests Implementing VPC Instances — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: They support both allow and deny actions for incoming requests. — Cloud Armor security policies can be attached to HTTPS Load Balancers. They support rules with conditions like IP addresses, geographic regions, and preconfigured WAF rules. They also support rate limiting.
What should I do if I get this PCNE question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PCNE ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
About these practice questions
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Last reviewed: Jul 4, 2026
This PCNE practice question is part of Courseiva's free Google Cloud 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 PCNE exam.
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