Free Amazon Web Services CLF-C02 Practice Exam with Questions & Answers | Set: 12

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.

Under the AWS Shared Responsibility Model, AWS manages the securityofthe cloud, while customers manage securityinthe cloud. For EC2 instances, it is the customer’s responsibility to manage the guestoperating system, including patching and encrypting data stored on attached storage volumes. AWS is responsible for the underlying infrastructure, including physical security and hypervisor maintenance.

AWS Fargate and Amazon S3 are both serverless services. Fargate allows users to run containers without managing the underlying infrastructure, while S3 provides object storage without the need for provisioning or managing servers. Amazon EC2, Amazon Managed Streaming for Apache Kafka, and Amazon EMR involve server management to varying degrees and are not serverless by nature.

AWS IAM Identity Center provides centralized access management across multiple AWS accounts, enabling organizations to manage employee access efficiently. It is specifically designed for this purpose within AWS Organizations. AWS STS provides temporary credentials but does not manage multiple account access centrally, while IAM Access Analyzer and Secrets Manager serve different purposes related to access and secret management.

Amazon Rekognition provides machine learning capabilities to analyze images and videos, enabling the detection of objects, people, text, and scenes. It is designed specifically for image and video analysis, making it suitable for various use cases like facial recognition and content moderation. Other services like Amazon Connect, Lightsail, and Personalize do not offer image or video analysis capabilities.

AWS IAM Identity Center (formerly AWS Single Sign-On) provides centralized management of user access to multiple AWS accounts within an organization in AWS Organizations. It allows users to log in once and gain access to all assigned accounts without managing separate logins for each account. Amazon Cognito is generally used for application-level user management and authentication, not for managing access across AWS accounts.

AWS Marketplace is a digital catalog that offers third-party software, including security solutions like intrusion detection systems, which can be deployed directly within an AWS environment. By using AWS Marketplace, companies can find, purchase, and deploy ISP intrusion detection systems or other security tools that meet their specific requirements. Other services, such as AWS Security Hub and Quick Starts, do not directly provide third-party application deployment.

S3 Intelligent-Tiering is cost-effective for data with unpredictable access patterns. It automatically moves data between two access tiers (frequent and infrequent) based on access patterns, which is suitable for data accessed daily or infrequently. S3 Glacier Deep Archive is for archival data accessed infrequently, and S3 One Zone-IA is for infrequent access data stored in a single availability zone, which may not be ideal for data accessed daily.

AWS Direct Connect provides a dedicated, low-latency, and consistent network connection between on-premises data centers and AWS. This private connection minimizes latency and improves network stability compared to a public internet connection or VPN. AWS Direct Connect is ideal for applications requiring real-time data transfer with minimal latency.

Amazon EventBridge (formerly CloudWatch Events) allows users to respond to changes in the state of AWS resources. It can be configured to invoke an AWS Lambda function when an EC2 instance enters the “stopping” state, providing a serverless way to automate responses to changes in EC2 instance states. AWS Config, SNS, and CloudFormation do not provide direct triggering for specific instance state changes.