Amazon Web Services Updated CLF-C02 Exam Questions and Answers by zian

Amazon EC2 instance store provides temporary block-level storage for your EC2 instance. This storage is located on disks that are physically attached to the host computer. Instance store is ideal for temporary storage of information that changes frequently, such as buffers, caches, scratch data,and other temporary content. It can also be used to store temporary data that you replicate across a fleet of instances, such as a load-balanced pool of web servers. An instance store consists of one or more instance store volumes exposed as block devices. The size of an instance store as well as the number of devices available varies by instance type and instance size. The virtual devices for instance store volumes are ephemeral[0-23] . Instance types that support one instance store volume have ephemeral0. Instance types that support two or more instance store volumes have ephemeral0, ephemeral1, and so on. Instance store pricing Instance store volumes are included as part of the instance’s usage cost. The data on an instance store volume persists even if the instance is rebooted. However, the data does not persist if the instance is stopped, hibernated, or terminated. When the instance is stopped, hibernated, or terminated, every block of the instance store volume is cryptographically erased. Therefore, do not rely on instance store volumes for valuable, long-term data. If you need to retain the data stored on an instance store volume beyond the lifetime of the instance, you need to manually copy that data to more persistent storage, such as an Amazon EBS volume, an Amazon S3 bucket, or an Amazon EFS file system. There are some events that can result in your data not persisting throughout the lifetime of the instance. The following table indicates whether data on instance store volumes is persisted during specific events, for both virtualized and bare metal instances1. References: Amazon EC2 instance store - Amazon Elastic Compute Cloud

Elasticity is a characteristic of the AWS Cloud that helps users eliminate underutilized CPU capacity. Elasticity refers to the ability to dynamically provision and de-provision computing resources as per demand, ensuring that the application or service always has the required resources to operate efficiently. Elasticity helps users optimize performance and costs, as theyonly pay for the resources they use and avoid wasting resources when the demand is low345. References: 3: Which characteristic of the aws cloud helps users eliminate …, 4: AWS Elastic Load Balancing and Application Load Balancer, 5: Which characteristic of the AWS Cloud helps users eliminate …

AWS Storage Gatewayis a hybrid cloud storage service that provides on-premises access to virtually unlimited cloud storage. TheFile Gatewayconfiguration allows for on-premises applications to store data in Amazon S3 using NFS and SMB protocols, while keeping frequently accessed data cached locally. This meets the company ' s requirement for cloud-based storage that is locally cached.

B. AWS Snowcone: Incorrect, as it is a portable edge computing and storage device, not a storage service that provides local caching for cloud storage.

C. AWS Backup: Incorrect, as it is a centralized backup service to automate data protection across AWS services but does not provide local caching.

D. Amazon Elastic File System (Amazon EFS): Incorrect, as it provides scalable file storage for use with Amazon EC2 but does not offer local caching for on-premises storage needs.

AWS Cloud References:

AWS Storage Gateway

AWS Enterprise Support provides customers with a designated technical account manager (TAM) who is a single point of contact for all technical and operational issues. The TAM provides consultative architectural and operational guidance delivered in thecontext of the customer’s applications and use-cases to help them achieve the greatest value from AWS. The TAM also helps customers with proactive services, such as strategic business reviews, security improvement programs, guided Well-Architected reviews, cost optimization workshops, and more1.

A full set of AWS Trusted Advisor checks is not an additional benefit of AWS Enterprise Support, as it is also included in the AWS Business Support plan2. AWS Trusted Advisor is a tool that provides best practice recommendations for cost optimization, performance, security, fault tolerance, and service limits.

Phone, email, and chat access to cloud support engineers 24 hours a day, 7 days a week is not an additional benefit of AWS Enterprise Support, as it is also included in the AWS Business Support plan2. Cloud support engineers can help customers with technical issues, such as troubleshooting, configuration, usage, and service features.

A consultative review and architecture guidance for the company’s applications is not an additional benefit of AWS Enterprise Support, as it is also included in the AWS Business Support plan2. Customers can request a consultative review from a solutions architect who will provide best practices and recommendations based on the customer’s use-cases and goals.