- A
Cloud Armor security policy
Why wrong: Cloud Armor is for load balancer traffic, not VPC SC.
- B
Service perimeter in enforced mode
Why wrong: The perimeter is already configured; this is about allowing specific access.
- C
Ingress rule that permits the access level
Ingress rules allow specified access levels to cross the perimeter.
- D
Access level with IP-based condition
An access level can specify allowed IP ranges.
- E
Egress rule to allow traffic to the on-premises network
Why wrong: Egress rules control outbound traffic from the perimeter; ingress rules control inbound.
Question 300 of 1,000
PCSE Configuring Network Security Practice Question
This PCSE practice question tests your understanding of configuring network security. 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 engineer is configuring a VPC Service Controls perimeter to protect a Cloud Storage bucket. They want to allow a specific on-premises network (IP range 203.0.113.0/24) to access the bucket, while still blocking other external networks. Which TWO components must they configure? (Choose TWO.)
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
✓
Ingress rule that permits the access level
You need an access level (based on IP) to define the allowed IPs, and an ingress rule to allow traffic from that access level into the perimeter.
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.
- ✗
Cloud Armor security policy
Why it's wrong here
Cloud Armor is for load balancer traffic, not VPC SC.
- ✗
Service perimeter in enforced mode
Why it's wrong here
The perimeter is already configured; this is about allowing specific access.
- ✓
Ingress rule that permits the access level
Why this is correct
Ingress rules allow specified access levels to cross the perimeter.
Related concept
Standard ACLs match source addresses.
- ✓
Access level with IP-based condition
Why this is correct
An access level can specify allowed IP ranges.
Related concept
Standard ACLs match source addresses.
- ✗
Egress rule to allow traffic to the on-premises network
Why it's wrong here
Egress rules control outbound traffic from the perimeter; ingress rules control inbound.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 PCSE ACL questions on filtering logic and placement.
- →
Configuring Network Security — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this PCSE question test?
Configuring Network Security — This question tests Configuring Network Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Ingress rule that permits the access level — You need an access level (based on IP) to define the allowed IPs, and an ingress rule to allow traffic from that access level into the perimeter.
What should I do if I get this PCSE 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 PCSE 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
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