The answer is the load balancer’s access control lists (ACLs). When a geographic restriction policy is applied to a cloud-based load balancer, it is typically enforced through ACL rules that permit or deny traffic based on source IP ranges mapped to specific regions. If users from an allowed region cannot access the site, the ACLs are the first place to check, as a misconfigured rule—such as an overlapping deny entry or an incorrect IP range—can inadvertently block legitimate traffic. On the CompTIA Cloud+ CV0-004 exam, this scenario tests your understanding of how load balancer ACLs implement geo-restrictions, a common trap where candidates assume the issue is with server health or DNS. Remember, health checks passing means the web servers are fine, so focus on the access control layer. Memory tip: “ACLs are the gatekeepers—if the gate is closed to the wrong region, no one gets in, even if the servers are healthy.”
CV0-004 Troubleshooting Practice Question
This CV0-004 practice question tests your understanding of troubleshooting. 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.
A company uses a cloud-based load balancer to distribute traffic to web servers. Recently, a new security policy was applied that restricts traffic to certain geographic regions. Users from an allowed region report they cannot access the website. The load balancer status shows health checks are passing. What should the administrator check?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The load balancer's access control lists (ACLs)
Option B is correct because the geographic restriction policy is likely implemented via ACLs on the load balancer. Option A is wrong because health checks passing indicate web servers are fine. Option C is wrong because DNS would affect all users, not just a specific region. Option D is wrong because SSL certificate issues would cause browser warnings, not complete inaccessibility.
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.
✗
The DNS resolution for the website
Why it's wrong here
DNS would affect all users equally, not just a specific region.
✗
The SSL certificate expiration
Why it's wrong here
SSL issues cause certificate errors, not complete blockage.
✗
The web server logs for application errors
Why it's wrong here
Web servers are healthy, so application errors are unlikely.
✓
The load balancer's access control lists (ACLs)
Why this is correct
ACLs enforce geographic restrictions and could be misconfigured, blocking allowed regions.
Related concept
Standard ACLs match source addresses.
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 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.
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 CV0-004 ACL questions on filtering logic and placement.
Troubleshooting — This question tests Troubleshooting — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: The load balancer's access control lists (ACLs) — Option B is correct because the geographic restriction policy is likely implemented via ACLs on the load balancer. Option A is wrong because health checks passing indicate web servers are fine. Option C is wrong because DNS would affect all users, not just a specific region. Option D is wrong because SSL certificate issues would cause browser warnings, not complete inaccessibility.
What should I do if I get this CV0-004 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 CV0-004 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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