Amazon Web Services CLF-C02 - AWS Certified Cloud Practitioner

AWS Storage Gateway provides on-premises applications with low-latency access to data stored in AWS by caching frequently accessed data locally. It seamlessly integrates on-premises environments with cloud storage, enabling hybrid storage solutions. AWS DataSync is for data transfer, CloudFront is a content delivery network, and AWS Backup is for backup management, not low-latency access.

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.

AWS Lambda is a serverless compute service that is ideal for applications with short-running processes and low-frequency invocation, as it only charges for the compute time consumed. Since the application is invoked only a few times a day and runs for less than 5 minutes, Lambda is the most cost-effective option. ECS, EKS, and EC2 are better suited for more persistent workloads and would be more costly in this use case.

AWS Elastic Beanstalk is a managed service that facilitates the deployment and management of applications in the AWS Cloud. It supports multiple programming languages and frameworks, allowing users to deploy web applications without managing the underlying infrastructure. Elastic Beanstalk automatically handles deployment, capacity provisioning, load balancing, and auto-scaling. The other services listed, like CodeGuru, Fargate, and CodeCommit, do not provide full application deployment and management capabilities.

AWS Organizations Overview:

AWS Organizations allows a company to manage multiple AWS accounts under a single organization.

Through the feature of consolidated billing, a company can receive a single bill for all linked accounts.

Key Features of Consolidated Billing in AWS Organizations:

Aggregates usage across accounts to take advantage of volume pricing discounts.

Provides detailed cost reports for individual linked accounts.

Simplifies payment processing by centralizing billing.

Why Other Options Are Incorrect:

A. AWS Billing and Cost Management console:Used for managing budgets and payments but does not set up consolidated billing.

C. AWS Cost and Usage Report:Provides detailed cost and usage reports but does not set up consolidated billing.

D. AWS Systems Manager:Focuses on operational management, not billing.

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.

The AWS Cloud's global infrastructure enables rapid deployment across multiple geographic regions, allowing companies to extend applications to new markets quickly. This capability to "go global in minutes" is especially valuable for businesses looking to reach customers in new countries without building data centers. Other options, like speed and agility, are advantages but do not specifically address global deployment.

AWS Trusted Advisor provides checks and recommendations across various categories, including cost optimization, security, and performance. Access to all Trusted Advisor checks is available with AWS Business Support, ensuring the company can follow AWS best practices comprehensively. The Developer Support plan offers limited Trusted Advisor checks, and AWS Health Dashboard provides insights into service health but not specific best practice recommendations.

AWS Config enables users to assess, audit, and evaluate the configurations of AWS resources. It provides information that can be used by external auditors to ensure compliance with various regulatory requirements by tracking changes and maintaining configuration history. Amazon Cognito, FSx, and Inspector do not provide detailed configuration tracking for audit purposes.

Amazon S3 offers virtually unlimited storage, allowing customers to store and retrieve any amount of data. There are no practical limits to the total volume of data that can be stored in S3, making it suitable for applications that require vast amounts of storage. The options of 10 PB, 50 PB, and 100 PB are incorrect as they do not reflect the actual scale of S3.