- A
IP whitelisting
Why wrong: IP whitelisting allows only specific IPs, which is too restrictive for a global web app.
- B
Rate limiting
Why wrong: Rate limiting controls request frequency but does not block by geography.
- C
OWASP rule set
Why wrong: OWASP rules protect against common web vulnerabilities, not geographic filtering.
- D
Geo-blocking
Geo-blocking blocks or allows traffic based on geographic location.
Question 187 of 997
CV0-004 Security Practice Question
This CV0-004 practice question tests your understanding of security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 is deploying a web application firewall (WAF) to protect a public-facing web application. The application experiences a high volume of traffic from a specific geographic region that is not part of the target customer base. Which WAF feature would best reduce the attack surface without impacting legitimate users?
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
✓
Geo-blocking
Geo-blocking allows the administrator to block traffic from specific regions, reducing the attack surface by eliminating traffic from non-target areas.
Key principle: OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
IP whitelisting
Why it's wrong here
IP whitelisting allows only specific IPs, which is too restrictive for a global web app.
- ✗
Rate limiting
Why it's wrong here
Rate limiting controls request frequency but does not block by geography.
- ✗
OWASP rule set
Why it's wrong here
OWASP rules protect against common web vulnerabilities, not geographic filtering.
- ✓
Geo-blocking
Why this is correct
Geo-blocking blocks or allows traffic based on geographic location.
Related concept
OSPF neighbours must agree on key parameters.
Common exam traps
Common exam trap: OSPF can fail even when IP connectivity looks correct
OSPF neighbour formation depends on matching areas, timers, network type, authentication and passive-interface behaviour. Do not choose an answer only because the devices can ping.
Detailed technical explanation
How to think about this question
OSPF questions usually test the details that control adjacency and route selection. Read the neighbour state, area, router ID and interface configuration before deciding what is wrong.
KKey Concepts to Remember
- OSPF neighbours must agree on key parameters.
- Router ID selection can affect neighbour relationships and LSDB output.
- OSPF cost influences the preferred path.
- A route can appear in OSPF information but not become the installed route.
TExam Day Tips
- Check area mismatch first when OSPF adjacency fails.
- Review passive interfaces when a network is advertised but no neighbour forms.
- Use show ip ospf neighbor and show ip route clues carefully.
Key takeaway
OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough.
Real-world example
How this comes up in practice
A practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. OSPF neighbour adjacency depends on matching area, hello/dead timers, network type, and authentication — IP reachability alone is not enough. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related CV0-004 OSPF questions on adjacency and route selection.
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FAQ
Questions learners often ask
What does this CV0-004 question test?
Security — This question tests Security — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Geo-blocking — Geo-blocking allows the administrator to block traffic from specific regions, reducing the attack surface by eliminating traffic from non-target areas.
What should I do if I get this CV0-004 question wrong?
Review OSPF neighbour requirements — matching area type, hello and dead timers, network type, stub flags, and authentication. Study show ip ospf neighbor states (INIT, 2-WAY, FULL). Then practise related CV0-004 OSPF questions on adjacency and route selection.
What is the key concept behind this question?
OSPF neighbours must agree on key parameters.
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Last reviewed: Jul 4, 2026
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.
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