Free Practice Questions for Amazon Web Services CLF-C02 Exam

Amazon Route 53 is a scalable Domain Name System (DNS) web service that routes end-user requests to infrastructure running in AWS. It is specifically designed to host domain names and manage DNS records, making it the ideal service for hosting the domain name of a public website. AWS Lambda, CloudFront, and Direct Connect serve different functions and are not DNS hosting services.

Amazon Aurora (with PostgreSQL compatibility) and Amazon EC2 can both host PostgreSQL databases. Aurora is a managed database service that provides a fully compatible PostgreSQL environment with automated management. EC2 can also host PostgreSQL, but it requires more manual setup and maintenance. Amazon S3 and EFS do not host databases, and Amazon OpenSearch Service is intended for search and analytics, not relational databases.

Network ACLs (NACLs) are subnet-level firewalls in AWS, controlling inbound and outbound traffic for VPC subnets. They provide an additional layer of security by allowing or denying traffic based on IP protocol, source and destination IP, and port. Security groups operate at the instance level, while Traffic Mirroring and Internet Gateways do not function as firewalls at the subnet level.

AWS Artifact Overview:

AWS Artifact is a service that provides on-demand access to AWS compliance documentation and agreements.

It includes reports such as PCI DSS, SOC, and ISO certifications.

How AWS Artifact Meets the Requirement:

The PCI DSS compliance documentation can be downloaded directly from the Artifact console.

Artifact helps customers demonstrate compliance to auditors by providing official certifications and attestations.

Why Other Options Are Incorrect:

B. AWS Organizations:Used for managing accounts, not compliance reports.

C. AWS Trusted Advisor:Offers best practice checks but does not provide compliance documentation.

D. AWS Support Center:Provides customer support and ticket management but not compliance documentation.

The AWS Management Console provides a web-based graphical user interface (GUI) that allows users to manage AWS services. It is user-friendly and accessible, enabling users to control and configure resources without needing to interact with AWS through code or command-line interfaces. AWS CLI and SDKs are command-line and programming tools, respectively, and do not offer a graphical interface.

Amazon RDS provides a managed database service that supports MariaDB with minimal operational overhead. It handles routine database tasks such as backups, patching, and scaling, reducing the burden on users. Amazon Neptune and DynamoDB are not compatible with MariaDB, and Amazon S3 is not a relational database service.

The AWS Architecture Center provides examples, best practices, and architectural blueprints for various AWS Cloud solutions. It includes whitepapers, reference architectures, and detailed diagrams to help users design secure, scalable, and reliable applications on AWS. Other services like AWS Marketplace, Service Catalog, and Trusted Advisor do not offer solution design examples.

AWS CloudHSM provides hardware-based key management to manage and protect encryption keys in the AWS Cloud. It allows customers to generate and use their own encryption keys while complying withrigorous security requirements. WhileAWS Certificate Manager (ACM)manages SSL/TLS certificates, it does not handle encryption keys independently, andAWS License ManagerandAWS Directory Serviceare not designed for managing encryption keys. AWS KMS is also relevant for key management but wasn't listed as an option in this question.

For a reporting application that runs only periodically, On-Demand Instances are the most cost-effective choice because they allow the company to pay only for the compute capacity used, without long-term commitments. Reserved Instances are less flexible due to the need for upfront payment or long-term contracts, which would not be cost-effective given the application’s intermittent usage. On-Demand Capacity Reservations would also be more costly, as they hold capacity regardless of usage.

Scaling horizontally, or adding more instances of resources rather than increasing the size of a single instance, is a core principle of the Performance Efficiency pillar of the AWS Well-Architected Framework. It enables applications to handle increasing loads by distributing traffic across multiple resources. Other options, such as serverless architectures, managed services, and cost measurement, align with other pillars of the framework.

The AWS Cloud is cost-effective for dynamic workloads because of its elasticity, allowing resources to scale up or down based on demand, and its pay-as-you-go pricing, which enables companies to pay only for what they use. Reliability, security, and high availability are also benefits of AWS, but they do not specifically relate to cost-effectiveness in the context of dynamic workloads.

AWS Organizations enables consolidated billing across multiple AWS accounts and allows for centralized management of security and compliance policies. It provides account grouping and centralized payment management, making it the optimal choice for a company requiring consolidated billing and centralized governance. AWS Cost and Usage Report only provides billing information, and AWS Config and Security Hub offer monitoring and security insights but do not handle billing consolidation.