Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A healthcare company needs to store patient medical records that must be retained for 10 years to comply with regulatory requirements. These records are accessed very rarely, only in the event of an audit or legal request. Which Amazon S3 storage class is the MOST cost-effective choice for this data?
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
S3 Standard
S3 Standard is designed for frequently accessed data and provides low latency and high throughput. It is not cost-effective for data that is rarely accessed over a decade, as the storage costs are much higher than archival classes.
B
Distractor review
S3 Intelligent-Tiering
S3 Intelligent-Tiering automatically moves objects between access tiers based on usage patterns. While it can optimize costs for unknown or changing access patterns, it includes a monitoring and automation fee that makes it less economical for data that is known to be rarely accessed for long periods.
C
Distractor review
S3 One Zone-IA
S3 One Zone-IA stores data in a single Availability Zone and is designed for infrequently accessed data. It has lower storage costs than Standard, but it does not provide the high durability (99.999999999%) needed for critical compliance records, and the retrieval costs are higher than Glacier Deep Archive for rare access.
D
Best answer
S3 Glacier Deep Archive
S3 Glacier Deep Archive is the lowest-cost S3 storage class, designed for long-term retention of data that is accessed extremely rarely (e.g., once or twice per year). It provides secure and durable storage with retrieval times of 12-48 hours, making it the most cost-effective choice for regulatory archives with a 10-year retention requirement.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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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?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: S3 Glacier Deep Archive — Amazon S3 Glacier Deep Archive is designed for long-term retention of data that is accessed extremely rarely, with retrieval times of 12 hours or more. It offers the lowest storage cost among S3 storage classes, making it ideal for compliance archives where data must be kept for years and accessed only a few times per year. S3 Standard is for frequently accessed data and would be too expensive. S3 Intelligent-Tiering automatically moves data between tiers but is not as cost-effective for long-term archival with rare access. S3 One Zone-IA is for infrequently accessed data but does not offer the durability across multiple Availability Zones required for critical compliance data.
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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