Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs a critical e-commerce application in a single AWS Region. The architecture team wants to ensure the application remains available even if an entire data center fails. They plan to deploy the application across multiple physically separate and independent locations within that Region. Which component of the AWS global infrastructure should the team use to achieve this goal?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Availability Zones
Availability Zones are isolated locations within a Region, each with independent power, cooling, and networking. Deploying across multiple AZs provides high availability and fault tolerance against data center failures.
B
Distractor review
Edge Locations
Edge Locations are used by Amazon CloudFront to cache content close to users for low latency. They are not designed for hosting compute or storage resources to achieve fault tolerance within a Region.
C
Distractor review
AWS Local Zones
Local Zones are extensions of a Region that place compute and storage closer to end users for latency-sensitive workloads. They do not provide the same level of fault isolation within a Region as Availability Zones.
D
Distractor review
AWS Regions
An AWS Region is a geographic area containing multiple Availability Zones. While a Region provides isolation from other Regions, deploying across multiple AZs within the same Region is the correct approach to protect against a single data center failure.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related CLF-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
AWS shared responsibility model practice questions
Practise CLF-C02 questions linked to AWS shared responsibility model.
AWS Cloud Practitioner cloud concepts practice questions
Practise CLF-C02 questions linked to AWS Cloud Practitioner cloud concepts.
AWS IAM practice questions
Practise CLF-C02 questions linked to AWS IAM.
AWS pricing practice questions
Practise CLF-C02 questions linked to AWS pricing.
AWS support plans practice questions
Practise CLF-C02 questions linked to AWS support plans.
AWS S3 practice questions
Practise CLF-C02 questions linked to AWS S3.
AWS EC2 practice questions
Practise CLF-C02 questions linked to AWS EC2.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
A solutions architect is planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
OSPF neighbours must agree on key parameters.
What is the correct answer to this question?
The correct answer is: Availability Zones — The correct answer is Availability Zones (AZs). AWS Regions consist of multiple, isolated Availability Zones. Each AZ contains one or more data centers with independent power, cooling, and networking. By distributing application instances across multiple AZs, the application can survive the failure of a single data center or AZ. Edge Locations are used for content caching and delivery, not for hosting infrastructure. AWS Local Zones extend a Region closer to end users but are not designed for fault isolation within a Region. An AWS Region is a geographic area with multiple AZs, but the Region itself is not the unit of isolation—AZs are the components that provide fault tolerance within a Region.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
Discussion
Loading comments…
Sign in to join the discussion.