Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company stores historical sales data in Amazon S3. The data is accessed only once a month for generating quarterly reports. When accessed, the data must be available for retrieval within seconds. The company wants to minimize storage costs while meeting the retrieval latency requirement. Which S3 storage class should the company use?
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. However, it has the highest storage cost among these options, making it unnecessarily expensive for data accessed only once a month.
B
Distractor review
S3 Intelligent-Tiering
S3 Intelligent-Tiering automatically moves objects between access tiers based on changing access patterns. While it can cost-effectively handle unpredictable access, it charges a monthly monitoring fee. For a known, monthly access pattern, S3 Standard-IA would be more cost-effective.
C
Best answer
S3 Standard-IA (Infrequent Access)
S3 Standard-IA is optimized for infrequently accessed data that requires millisecond retrieval. It offers lower storage costs than S3 Standard, with a retrieval fee. This matches the scenario: monthly access with seconds retrieval latency and lowest cost.
D
Distractor review
S3 Glacier Deep Archive
S3 Glacier Deep Archive provides the lowest storage cost but has retrieval times of 12 to 48 hours. This does not meet the requirement that data be available within seconds when accessed.
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 Standard-IA (Infrequent Access) — Amazon S3 offers multiple storage classes optimized for different access patterns and cost profiles. S3 Standard-IA (Infrequent Access) is designed for data that is accessed less frequently but requires rapid access when needed. It has a lower per-GB storage cost than S3 Standard, with a retrieval fee. This makes it ideal for data accessed monthly that still needs sub-second retrieval latency. S3 Standard is more expensive for infrequently accessed data. S3 Intelligent-Tiering automatically moves objects between tiers based on changing access patterns, but it includes a monthly monitoring fee and is not the most cost-effective choice for a predictable, known access pattern. S3 Glacier Deep Archive offers the lowest storage cost but has retrieval times ranging from 12 to 48 hours, which violates the seconds-retrieval requirement. Therefore, S3 Standard-IA is the correct choice.
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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