CLF-C02 Amazon Web Services AWS Certified Cloud Practitioner Free Practice Exam Questions (2025 Updated)

AWS WAF is a web application firewall that helps protect your web applications or APIs against common web exploits that may affect availability, compromise security, or consume excessive resources. AWS WAF gives you control over how traffic reaches your applications by enabling you to create security rules that block common attack patterns, such as SQL injection or cross-sitescripting, and rules that filter out specific traffic patterns you define2. You can use AWS WAF to create a custom rule that blocks SQL injection attacks on your website.

A is correct because Amazon Lex is the AWS service that helps users build conversational interfaces into applications using voice and text. B is incorrect because Amazon Transcribe is the AWS service that helps users convert speech to text. C is incorrect because Amazon Comprehend is the AWS service that helps users analyze text using natural language processing. D is incorrect because Amazon Timestream is the AWS service that helps users collect, store, and process time series data.

AWS CloudTrail is a service that enables governance, compliance, operational auditing, and risk auditing of your AWS account. With CloudTrail, you can log, continuously monitor, and retain account activity related to actions across your AWS infrastructure. You can use CloudTrail to identify who accessed an AWS service and what action was performed for a given time period. Amazon CloudWatch, AWS Security Hub, and Amazon Inspector are AWS services that provide different types of monitoring and security capabilities.

S3 Versioning is a feature that allows you to keep multiple versions of an object in the same bucket. You can use S3 Versioning to protect your data from accidental deletion or overwriting by enabling it on a bucket or a specific object. S3 Versioning also allows you to restore previous versions of an object if needed. S3 Lifecycle rules are used to automate the transition of objects between storage classes or to expire objects after a certain period of time. S3 bucket policies are used to control access to the objects in a bucket. S3 server-side encryption is used toencrypt the data at rest in S3. References: S3 Versioning, S3 Lifecycle rules, S3 bucket policies, S3 server-side encryption

AWS Artifact is a service that provides on-demand access to AWS security and compliance documents, such as AWS ISO certifications, Payment Card Industry (PCI) reports, and Service Organization Control (SOC) reports. You can download these documents and submit them as evidence to your auditors or regulators to demonstrate the security and compliance of the AWS infrastructure and services that you use. AWS Artifact also allows you to review, accept, and manage AWS agreements, such as the Business Associate Addendum (BAA) for customers who are subject to the Health Insurance Portability and Accountability Act (HIPAA). References: AWS Artifact, What is AWS Artifact?