Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company is designing a highly available application that must remain operational even if a single physical data center fails. The application will be deployed in the us-east-1 Region. The company wants to distribute the application across multiple physical locations within the Region, where each location has independent power, cooling, and networking. Which AWS Global Infrastructure component should the company use to meet this requirement?
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
Distractor review
AWS Region
An AWS Region is a large geographic area that contains multiple, isolated Availability Zones. While deploying across Regions can provide even higher resilience, the requirement is specifically to distribute within the same Region across independent data centers. Using multiple Regions would introduce higher latency and complexity that are not needed for this scenario.
B
Best answer
Availability Zone
Availability Zones are isolated locations within an AWS Region, each with independent power, cooling, and networking. By deploying across multiple Availability Zones, the application can survive a single data center failure, achieving high availability and fault tolerance within the same Region.
C
Distractor review
Edge Location
Edge Locations are used primarily for content delivery and caching through services like Amazon CloudFront. They are not designed to host application compute resources and do not provide the independent infrastructure needed for high availability of the application itself.
D
Distractor review
Local Zone
AWS Local Zones extend Regions closer to end users for ultra-low latency applications. They are not the primary component for achieving high availability across independent data centers within a Region; Availability Zones are the correct building block for that purpose.
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.
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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 Zone — Availability Zones are the correct choice because they are physically separate, isolated locations within an AWS Region. Each Availability Zone has independent power, cooling, and networking, and they are connected through low-latency links. Deploying an application across multiple Availability Zones provides high availability and fault tolerance by ensuring that if one Availability Zone fails, the application can continue operating from another. AWS Regions are broader geographic areas that contain multiple Availability Zones, but deploying across Regions would add latency and complexity not required here. Edge Locations are used for content delivery and caching, not for hosting application compute resources. Local Zones are designed to provide ultra-low latency for specific use cases but are not the standard component for achieving high availability across independent data centers 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.
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