Amazon Amazon Certifications CLF-C02 Questions & Answers

• Question 321:

  An ecommerce company wants to provide relevant product recommendations to its customers. The recommendations will include products that are frequently purchased with other products that the customer already purchased. The recommendations also will include products of a specific color and products from the customer's favorite brand.

  Which AWS service or feature should the company use to meet these requirements with the LEAST development effort?

  A. Amazon Comprehend

  B. Amazon Forecast

  C. Amazon Personalize

  D. Amazon SageMaker Studio

  Correct Answer: C

  Amazon Personalize is a service that provides real-time personalized recommendations based on the user's behavior, preferences, and context. It can also incorporate metadata such as product color and brand to generate more relevant recommendations. Amazon Comprehend is a natural language processing (NLP) service that can analyze text for entities, sentiments, topics, and more. Amazon Forecast is a service that provides accurate time-series forecasting based on machine learning. Amazon SageMaker Studio is a web-based integrated development environment (IDE) for machine learning.

• Question 322:

  A company simulates workflows to review and validate that all processes are effective and that staff are familiar with the processes.

  Which design principle of the AWS Well-Architected Framework is the company following with this practice?

  A. Perform operations as code.

  B. Refine operation procedures frequently.

  C. Make frequent, small, reversible changes.

  D. Structure the company to support business outcomes.

  Correct Answer: B

  Refining operation procedures frequently is one of the design principles of the operational excellence pillar of the AWS Well-Architected Framework. It means that you should review and validate your processes regularly to ensure they are effective and that staff are familiar with them. Performing operations as code, making frequent, small, reversible changes, and structuring the company to support business outcomes are design principles of other pillars of the AWS Well-Architected Framework.

• Question 323:

  A company seeks cost savings in exchange for a commitment to use a specific amount of an AWS service or category ofAWS services for 1 year or 3 years.

  Which AWS pricing model or offering will meet these requirements?

  A. Pay-as-you-go pricing

  B. Savings Plans

  C. AWS Free Tier

  D. Volume discounts

  Correct Answer: B

  Savings Plans are an AWS pricing model or offering that can meet the requirements of seeking cost savings in exchange for a commitment to use a specific amount of an AWS service or category of AWS services for 1 year or 3 years. Savings Plans are flexible plans that offer significant discounts on AWS compute usage, such as EC2, Lambda, and Fargate. The company can choose from two types of Savings Plans: Compute Savings Plans and EC2 Instance Savings Plans. Compute Savings Plans provide the most flexibility and apply to any eligible compute usage, regardless of instance family, size, region, operating system, or tenancy. EC2 Instance Savings Plans provide more savings and apply to a specific instance family within a region. The company can select the amount of compute usage per hour (e.g., $10/hour) that they want to commit to for the duration of the plan (1 year or 3 years). The company will pay the discounted Savings Plan rate for the amount of usage that matches their commitment, and the regular on-demand rate for any usage beyond that

• Question 324:

  Which database engines does Amazon Aurora support? (Select TWO.)

  A. Oracle

  B. Microsoft SQL Server

  C. MySQL

  D. PostgreSQL

  E. MongoDB

  Correct Answer: CD

  Amazon Aurora is a relational database service that is compatible with MySQL and PostgreSQL engines. It delivers up to five times the performance of MySQL and up to three times the performance of PostgreSQL. It also provides high availability, scalability, security, and durability1

• Question 325:

  Which of the following are general AWS Cloud design principles described in the AWS Well-Architected Framework? (Select TWO.)

  A. Consolidate key components into monolithic architectures.

  B. Test systems at production scale.

  C. Provision more capacity than a workload is expected to need.

  D. Drive architecture design based on data collected about the workload behavior and requirements.

  E. Make AWS Cloud architectural decisions static, one-time events.

  Correct Answer: BD

  These are two of the general AWS Cloud design principles described in the AWS Well-Architected Framework. Testing systems at production scale means using tools such as AWS CloudFormation, AWS CodeDeploy, and AWS X-Ray to simulate real-world scenarios and measure the performance, scalability, and availability of the system. Driving architecture design based on data means using tools such as Amazon CloudWatch, AWS CloudTrail, and AWS Config to collect and analyze metrics, logs, and events about the system and use the insights to optimize the system's design and operation. You can learn more about the AWS Well-Architected Framework from this whitepaper or [this digital course].

• Question 326:

  Which AWS service is deployed to VPCs and provides protection from common network threats?

  A. AWSShield

  B. AWSWAF

  C. AWS Network Firewall

  D. AWS FirewallManager

  Correct Answer: C

  AWS Network Firewall is a managed service that makes it easy to deploy essential network protections for all of your Amazon Virtual Private Clouds (VPCs). The service can be set up with just a few clicks from the AWS console or using APIs. AWS Network Firewall automatically scales with your network traffic, so you don't have to worry about deploying and managing any infrastructure. AWS Network Firewall provides protection from common network threats such as SQL injection, cross-site scripting, and DDoS attacks1.

• Question 327:

  A company's application has high customer usage during certain times of the day. The company wants to reduce the number of Amazon EC2 instances that run when application usage is low.

  Which AWS service or instance purchasing option should the company use to meet this requirement?

  A. EC2 Instance Savings Plans

  B. Spot Instances

  C. Reserved Instances

  D. Amazon EC2 Auto Scaling

  Correct Answer: D

  Amazon EC2 Auto Scaling is an AWS service that can help users reduce the number of Amazon EC2 instances that run when application usage is low. Amazon EC2 Auto Scaling allows users to create scaling policies that automatically adjust the number of EC2 instances based on the demand or a schedule. EC2 Instance Savings Plans, Spot Instances, and Reserved Instances are instance purchasing options that can help users save money on EC2 usage, but they do not automatically scale the number of instances according to the application usage .

• Question 328:

  A company simulates workflows to review and validate that all processes are effective and that staff are familiar with the processes.

  Which design principle of the AWS Well-Architected Framework is the company following with this practice?

  A. Perform operations as code.

  B. Refine operation procedures frequently.

  C. Make frequent, small, reversible changes.

  D. Structure the company to support business outcomes.

  Correct Answer: B

  Refine operation procedures frequently is one of the design principles of the operational excellence pillar of the AWS Well-Architected Framework. It means that users should continuously review and validate their operational processes to ensure that they are effective and that staff are familiar with them. It also means that users should identify and address any gaps or issues in their processes, and incorporate feedback and lessons learned from operational events5. Perform operations as code is another design principle of the operational excellence pillar, which means that users should automate and script their operational tasks to reduce human error and enable consistent and repeatable execution. Make frequent, small, reversible changes is a design principle of the reliability pillar, which means that users should deploy changes in small increments that can be easily tested and rolled back if necessary. Structure the company to support business outcomes is a design principle of the performance efficiency pillar, which means that users should align their organizational structure and culture with their business goals and cloud strategy.

• Question 329:

  Which of the following is a benefit that AWS Professional Services provides?

  A. Management of the ongoing security of user data

  B. Advisory solutions for AWS adoption

  C. Technical support 24 hours a day, 7 days a week

  D. Monitoring of monthly billing costs in AWS accounts

  Correct Answer: B

  AWS Professional Services is a team of experts that help customers achieve their desired outcomes using the AWS Cloud. One of the benefits that AWS Professional Services provides is advisory solutions for AWS adoption, which include guidance on cloud strategy, architecture, migration, and innovation2. Management of the ongoing security of user data, technical support 24 hours a day, 7 days a week, and monitoring of monthly billing costs in AWS accounts are not benefits that AWS Professional Services provides, as they are either the responsibility of the customer or the features of other AWS services or support plans3

• Question 330:

  Which AWS services can limit manual errors by consistently provisioning AWS resources in multiple envirom? (Select TWO.)

  A. AWS Config

  B. AWS CodeStar

  C. AWS CloudFormation

  D. AWS Cloud Development Kit (AWS CDK)

  E. AWS CodeBuild

  Correct Answer: CD

  AWS CloudFormation and AWS Cloud Development Kit (AWS CDK) are AWS services that can limit manual errors by consistently provisioning AWS resources in multiple environments. AWS CloudFormation is a service that enables you to model and provision AWS resources using templates. You can use AWS CloudFormation to define the AWS resources and their dependencies that you need for your applications, and to automate the creation and update of those resources across multiple environments, such as development, testing, and production. AWS CloudFormation helps you ensure that your AWS resources are configured consistently and correctly, and that you can easily replicate or modify them as needed. AWS Cloud Development Kit (AWS CDK) is a service that enables you to use familiar programming languages, such as Python, TypeScript, Java, and C#, to define and provision AWS resources. You can use AWS CDK to write code that synthesizes into AWS CloudFormation templates, and to leverage the existing libraries and tools of your preferred language. AWS CDK helps you reduce the complexity and errors of writing and maintaining AWS CloudFormation templates, and to apply the best practices and standards of software development to your AWS infrastructure.