Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company is migrating its on-premises applications to the AWS Cloud. The Chief Security Officer wants to confirm the division of security responsibilities. According to the AWS Shared Responsibility Model, which of the following tasks is the customer's responsibility?
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
Ensuring the physical security of AWS data centers
Physical security of data centers is the responsibility of AWS. This includes controlled access, surveillance, and environmental controls. Customers do not have physical access to data centers and do not manage physical security.
B
Distractor review
Patching the hypervisor layer that runs Amazon EC2 instances
The hypervisor, which abstracts the underlying hardware for Amazon EC2 instances, is managed and patched by AWS. Customers are responsible only for patching the guest operating system and applications running on their instances.
C
Best answer
Managing network access control lists (ACLs) for the customer's VPC
Network ACLs are stateless firewall rules that control inbound and outbound traffic at the subnet level within a VPC. Configuring and managing these rules is the customer's responsibility as part of managing security in the cloud.
D
Distractor review
Replacing defective hardware components in the AWS global infrastructure
AWS is responsible for the maintenance and replacement of all hardware components in its data centers, including servers, storage devices, and networking equipment. Customers do not perform hardware replacements.
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: Managing network access control lists (ACLs) for the customer's VPC — Under the AWS Shared Responsibility Model, AWS manages the security of the cloud (physical data centers, hypervisor, hardware), while the customer manages security in the cloud (network traffic, guest operating systems, applications, and data). Managing network access control lists (ACLs) is a customer responsibility because it involves configuring network traffic within the customer's virtual private cloud (VPC).
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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