- A
Security: Protect information, systems, and assets.
Security pillar focuses on data protection, identity management, and threat detection.
- B
Reliability: Recover from failures, meet demand.
Reliability ensures workloads perform correctly and consistently, with disaster recovery.
- C
Cost Optimization: Avoid unnecessary costs.
Cost Optimization focuses on minimizing expenses while maximizing value.
- D
Security: Ability to run and monitor systems.
Why wrong: Incorrect — this describes Operational Excellence, not Security.
- E
Reliability: Ability to optimize costs.
Why wrong: Incorrect — this describes Cost Optimization, not Reliability.
Question 193 of 1,024
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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.
Match each AWS Well-Architected Framework pillar to its description.
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
✓
Security: Protect information, systems, and assets.
The AWS Well-Architected Framework pillars are Operational Excellence, Security, Reliability, Performance Efficiency, and Cost Optimization. Correct matches align each pillar with its core focus area.
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.
- ✓
Security: Protect information, systems, and assets.
Why this is correct
Security pillar focuses on data protection, identity management, and threat detection.
Related concept
OSPF neighbours must agree on key parameters.
- ✓
Reliability: Recover from failures, meet demand.
Why this is correct
Reliability ensures workloads perform correctly and consistently, with disaster recovery.
Related concept
OSPF neighbours must agree on key parameters.
- ✓
Cost Optimization: Avoid unnecessary costs.
Why this is correct
Cost Optimization focuses on minimizing expenses while maximizing value.
Related concept
OSPF neighbours must agree on key parameters.
- ✗
Security: Ability to run and monitor systems.
Why it's wrong here
Incorrect — this describes Operational Excellence, not Security.
- ✗
Reliability: Ability to optimize costs.
Why it's wrong here
Incorrect — this describes Cost Optimization, not Reliability.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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 CLF-C02 OSPF questions on adjacency and route selection.
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Cloud Technology and Services — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Technology and Services — This question tests Cloud Technology and Services — OSPF neighbours must agree on key parameters..
What is the correct answer to this question?
The correct answer is: Security: Protect information, systems, and assets. — The AWS Well-Architected Framework pillars are Operational Excellence, Security, Reliability, Performance Efficiency, and Cost Optimization. Correct matches align each pillar with its core focus area.
What should I do if I get this CLF-C02 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 CLF-C02 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: Jun 11, 2026
This CLF-C02 practice question is part of Courseiva's free Amazon Web Services 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 CLF-C02 exam.
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