- A
Deny
Why wrong: The deny rule has lower priority (2000) and is only evaluated if no higher priority rule matches. Since the allow rule matches, deny is not applied.
- B
Error: conflicting rules
Why wrong: There is no conflict; rules are evaluated in priority order.
- C
Allow
The allow rule with higher priority (1000) matches first, so traffic is allowed.
- D
Depends on the default rule
Why wrong: The default rule (allow or deny) applies only if no custom rule matches. Here, a custom rule matches.
Question 296 of 1,000
PCNE Implementing VPC Instances Practice Question
This PCNE practice question tests your understanding of implementing vpc instances. 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.
A company has deployed a Cloud Armor security policy with the following rules: Rule 1: allow from IP range 10.0.0.0/8 (priority 1000); Rule 2: deny from all (priority 2000). What will be the action for traffic from IP 10.1.1.1?
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
✓
Allow
Cloud Armor evaluates rules in priority order (lower number = higher priority). Rule 1 matches and allows the traffic, so Rule 2 is not evaluated.
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.
- ✗
Deny
Why it's wrong here
The deny rule has lower priority (2000) and is only evaluated if no higher priority rule matches. Since the allow rule matches, deny is not applied.
- ✗
Error: conflicting rules
Why it's wrong here
There is no conflict; rules are evaluated in priority order.
- ✓
Allow
Why this is correct
The allow rule with higher priority (1000) matches first, so traffic is allowed.
Related concept
Standard ACLs match source addresses.
- ✗
Depends on the default rule
Why it's wrong here
The default rule (allow or deny) applies only if no custom rule matches. Here, a custom rule matches.
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
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. 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. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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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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: Allow — Cloud Armor evaluates rules in priority order (lower number = higher priority). Rule 1 matches and allows the traffic, so Rule 2 is not evaluated.
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.
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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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