Amazon Amazon Certifications CLF-C02 Questions & Answers

• Question 431:

  What is a characteristic of Convertible Reserved Instances (RIs)?

  A. Users can exchange Convertible RIs for other Convertible RIs from a different instance family.

  B. Users can exchange Convertible RIs for other Convertible RIs in different AWS Regions.

  C. Users can sell and buy Convertible RIs on the AWS Marketplace.

  D. Users can shorten the term of their Convertible RIs by merging them with other Convertible RIs.

  Correct Answer: A

  Convertible Reserved Instances (RIs) are a type of Reserved Instance that allow you to change the attributes of the RI as long as the exchange results in the creation of Reserved Instances of equal or greater value. You can exchange Convertible RIs for other Convertible RIs from a different instance family, size, platform, tenancy, or scope (Region or Availability Zone)3.

• Question 432:

  An application runs on multiple Amazon EC2 instances that access a shared file system simultaneously.

  Which AWS storage service should be used?

  A. Amazon EBS

  B. Amazon EFS

  C. Amazon S3

  D. AWS Artifact

  Correct Answer: B

  Amazon Elastic File System (Amazon EFS) is the AWS storage service that should be used for an application that runs on multiple Amazon EC2 instances that access a shared file system simultaneously. Amazon EFS is a fully managed service that provides a scalable, elastic, and highly available file system for Linux-based workloads. Amazon EFS supports the Network File System version 4 (NFSv4) protocol and allows multiple EC2 instances to read and write data to the same file system concurrently. Amazon EFS also integrates with other AWS services, such as AWS Backup, AWS CloudFormation, and AWS CloudTrail. For more information, see What is Amazon Elastic File System? and [Amazon EFS Use Cases].

• Question 433:

  A company is planning a migration to the AWS Cloud and wants to examine the costs that are associated with different workloads.

  Which AWS tool will meet these requirements?

  A. AWS Budgets

  B. AWS Cost Explorer

  C. AWS Pricing Calculator

  D. AWS Cost and Usage Report

  Correct Answer: C

  The AWS tool that will meet the requirements of the company that is planning a migration to the AWS Cloud and wants to examine the costs that are associated with different workloads is AWS Pricing Calculator. AWS Pricing Calculator is a tool that helps customers estimate the cost of using AWS services based on their requirements and preferences. The company can use AWS Pricing Calculator to compare the costs of different AWS services and configurations, such as Amazon EC2, Amazon S3, Amazon RDS, and more. AWS Pricing Calculator also provides detailed breakdowns of the cost components, such as compute, storage, network, and data transfer. AWS Pricing Calculator helps customers plan and optimize their cloud budget and migration strategy. AWS Budgets, AWS Cost Explorer, and AWS Cost and Usage Report are not the best tools to use for this purpose. AWS Budgets is a tool that helps customers monitor and manage their AWS spending and usage against predefined budget limits and thresholds. AWS Cost Explorer is a tool that helps customers analyze and visualize their AWS spending and usage trends over time. AWS Cost and Usage Report is a tool that helps customers access comprehensive and granular information about their AWS costs and usage in a CSV or Parquet file. These tools are more useful for tracking and optimizing the existing AWS costs and usage, rather than estimating the costs of different workloads34

• Question 434:

  Which AWS service provides the SIMPLEST way for the company to establish a website on AWS?

  A. Amazon Elastic File System (Amazon EFS)

  B. AWS Elastic Beanstalk

  C. AWS Lambda

  D. Amazon Lightsail

  Correct Answer: D

  Amazon Lightsail is an easy-to-use cloud platform that offers you everything needed to build an application or website, plus a cost-effective, monthly plan. Whether you're new to the cloud or looking to get on the cloud quickly with AWS infrastructure you trust, we've got you covered. Lightsail provides the simplest way for the company to establish a website on AWS.

• Question 435:

  A company wants to move its iOS application development and build activities to AWS.

  Which AWS service or resource should the company use for these activities?

  A. AWS CodeCommit

  B. Amazon EC2 M1 Mac instances

  C. AWS Amplify

  D. AWS App Runner

  Correct Answer: B

  Amazon EC2 M1 Mac instances are the AWS service or resource that the company should use for its iOS application development and build activities, as they enable users to run macOS on AWS and access a broad and growing set of AWS services. AWS CodeCommit is a service that provides a fully managed source control service that hosts secure Git-based repositories. AWS Amplify is a set of tools and services that enable developers to build full-stack web and mobile applications using AWS. AWS App Runner is a service that makes it easy for developers to quickly deploy containerized web applications and APIs. These concepts are explained in the AWS Developer Tools page4.

• Question 436:

  A company must store call recordings for 6 years. The storage system should be highly durable and cost-effective.

  Which AWS service meets these requirements?

  A. AWS Snowball

  B. Amazon S3

  C. AWS Storage Gateway

  D. Amazon Kinesis

  Correct Answer: B

  Amazon S3 is a service that provides highly durable and cost-effective object storage for a variety of use cases, including backup and archive, big data analytics, disaster recovery, and cloud applications. Amazon S3 offers 99.999999999% (11 9's) of durability, meaning that data is designed to withstand the loss of two facilities concurrently. Amazon S3 also offers several storage classes with different price and performance characteristics, such as S3 Glacier and S3 Glacier Deep Archive, which are ideal for long- term archival of data that is rarely accessed. AWS Snowball, AWS Storage Gateway, and Amazon Kinesis are not designed to provide the same level of durability and cost- effectiveness as Amazon S3 for storing call recordings for 6 years. Source: Amazon S3

• Question 437:

  A company needs to launch an Amazon EC2 instance.

  Which of the following can the company use during the launch process to configure the root volume of the EC2 instance?

  A. Amazon EC2 Auto Scaling

  B. Amazon Data Lifecycle Manager (Amazon DLM)

  C. Amazon Machine Image (AMI)

  D. Amazon Elastic Block Store (Amazon EBS) volume

  Correct Answer: C

  Amazon Machine Image (AMI) is the option that the company can use during the launch process to configure the root volume of the EC2 instance. An AMI is a template that contains the software configuration, such as the operating system, applications, and settings, required to launch an EC2 instance. An AMI also specifies the volume size and type of the root device for the instance. The company can choose an AMI provided by AWS, the AWS Marketplace, or the AWS community, or create a custom AMI. For more information, see [Amazon Machine Images (AMI)] and [Launching an Instance Using the Launch Instance Wizard].

• Question 438:

  Which option is a pillar of the AWS Well-Architected Framework?

  A. Patch management

  B. Cost optimization

  C. Business technology strategy

  D. Physical and environmental controls

  Correct Answer: B

  The AWS Well-Architected Framework helps you understand the pros and cons of decisions you make while building systems on AWS. By using the Framework, you will learn architectural best practices for designing and operating reliable, secure, efficient, and cost-effective systems in the cloud. The Framework consists of five pillars: operational excellence, security, reliability, performance efficiency, and cost optimization2.

• Question 439:

  A company needs to host a highly available application in the AWS Cloud. The application runs infrequently for short periods of time.

  Which AWS service will meet these requirements with the LEAST amount of operational overhead?

  A. Amazon EC2

  B. AWS Fargate

  C. AWS Lambda

  D. Amazon Aurora

  Correct Answer: C

  The AWS service that will meet the requirements of the company that needs to host a highly available application in the AWS Cloud that runs infrequently for short periods of time with the least amount of operational overhead is AWS Lambda. AWS Lambda is a serverless compute service that allows customers to run code without provisioning or managing servers. The company can use AWS Lambda to create and deploy their application as functions that are triggered by events, such as API calls, messages, or schedules. AWS Lambda automatically scales the compute resources based on the demand, and customers only pay for the compute time they consume. AWS Lambda also simplifies the management and maintenance of the application, as customers do not need to worry about the underlying infrastructure, security, or availability. Amazon EC2, AWS Fargate, and Amazon Aurora are not the best services to use for this purpose. Amazon EC2 is a service that provides scalable compute capacity in the cloud, and allows customers to launch and run virtual servers, called instances, with a variety of operating systems, configurations, and specifications. Amazon EC2 requires customers to provision and manage the instances, and pay for the instance hours they use, regardless of the application usage. AWS Fargate is a serverless compute engine for containers that allows customers to run containerized applications without managing servers or clusters. AWS Fargate requires customers to specify the amount of CPU and memory resources for each container, and pay for the resources they allocate, regardless of the application usage. Amazon Aurora is a fully managed relational database service that provides high performance, availability, and compatibility. Amazon Aurora is not a compute service, and it is not suitable for hosting an application that runs infrequently for short periods of time12

• Question 440:

  A company has an application workload that is stateless by design and can sustain occasional downtime. The application performs massively parallel computations.

  Which Amazon EC2 pricing model should the company choose for its application to reduce cost?

  A. On-Demand Instances

  B. Spot Instances

  C. Reserved Instances

  D. Dedicated Instances

  Correct Answer: B

  Amazon EC2 Spot Instances let you take advantage of unused EC2 capacity in the AWS cloud. Spot Instances are available at up to a 90% discount compared to On- Demand prices. You can use Spot Instances for various stateless, fault-tolerant, or flexible applications such as big data, containerized workloads, CI/CD, web servers, high- performance computing (HPC), and other test and development workloads. Spot Instances are well-suited for massively parallel computations, as they can provide large amounts of compute capacity at a low cost, and can be interrupted with a two-minute notice3