Amazon CLF-C02 Online Practice Questions and Exam Preparation

Amazon CLF-C02 Online Questions & Answers

• Question 121:

  A company uses Amazon EC2 infrastructure to host steady-stale workloads and needs to achieve significant cost savings. Which EC2 instance pricing model should the company select?

  A. Reserved instances
  B. On-Demand instances
  C. Spot Instances
  D. Dedicated Hosts
  A. Reserved instances

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  Explanation

  Instances that must be online all the time and have steady or predictable traffic Any baseline usage, while using On-Demand or Spot Instances for bursts Applications that might require reserved capacity Customers who can commit to using EC2 over a one-year or 3-year term https://aws.amazon.com/blogs/startups/optimizing-your-costs-for-aws-services-part-1/

• Question 122:

  An ecommerce company has migrated its IT infrastructure from an on-premises data center to the AWS Cloud.

  Which cost is the company's direct responsibility?

  A. Cost of application software licenses
  B. Cost of the hardware infrastructure on AWS
  C. Cost of power for the AWS servers
  D. Cost of physical security for the AWS data center
  A. Cost of application software licenses

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  Explanation

  The cost of application software licenses is the company's direct responsibility when it migrates its IT infrastructure from an on-premises data center to the AWS Cloud. Application software licenses are the agreements that grant users the right to use specific software products, such as operating systems, databases, or applications. Depending on the type and terms of the license, users may need to pay a fee to the software vendor or provider to use the software legally and access its features and updates. When users migrate their IT infrastructure to the AWS Cloud, they can choose to buy new licenses from AWS, bring their own licenses (BYOL), or use a combination of both. However, regardless of the option they choose, they are still responsible for complying with the license terms and paying the license fees to the software vendor or provider. AWS does not charge users for the application software licenses they bring or buy, but only for the AWS resources they use to run their applications. Therefore, the cost of application software licenses is the only cost among the options that is the company's direct responsibility. The other costs are either included in the AWS service fees or covered by AWS.

  References: AWS License Manager Pricing, Software licensing: The blind spot in public cloud costs, Cost Optimization tips for SQL Server Licenses on AWS, Microsoft Licensing on AWS

• Question 123:

  A company runs a MySQL database in its on-premises data center. The company wants to run a copy of this database in the AWS Cloud.

  Which AWS service would support this workload?

  A. Amazon RDS
  B. Amazon Neptune
  C. Amazon ElastiCache for Redis
  D. Amazon Quantum Ledger Database (Amazon QLDB)
  A. Amazon RDS

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  Explanation

  Amazon Relational Database Service (Amazon RDS) is a web service that makes it easier to set up, operate, and scale a relational database in the cloud. It provides cost-efficient and resizable capacity, while automating time-consuming administration tasks such as hardware provisioning, database setup, patching, and backups. Amazon RDS supports six popular database engines: Amazon Aurora, PostgreSQL, MySQL, MariaDB, Oracle Database, and SQL Server. Amazon RDS can support running a copy of a MySQL database in the AWS Cloud, as it offers compatibility, scalability, and availability features.

• Question 124:

  Which benefits does a company gain when the company moves from on-premises IT architecture to the AWS Cloud? (Choose two.)

  A. Reduced or eliminated tasks for hardware troubleshooting, capacity planning, and procurement
  B. Elimination of the need for trained IT staff
  C. Automatic security configuration of all applications that are migrated to the cloud
  D. Elimination of the need for disaster recovery planning
  E. Faster deployment of new features and applications
  A. Reduced or eliminated tasks for hardware troubleshooting, capacity planning, and procurement
  E. Faster deployment of new features and applications

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  Explanation

  When a company moves from on-premises IT architecture to the AWS Cloud, it gains several benefits:

  Option A: Reduced or eliminated tasks for hardware troubleshooting, capacity planning, and procurement:

  In an on-premises environment, companies must maintain their own hardware, which involves procuring servers, configuring them, managing capacity, and troubleshooting hardware failures. Moving to the AWS Cloud eliminates or greatly

  reduces these tasks since AWS is responsible for the underlying infrastructure.

  Option E: Faster deployment of new features and applications:

  AWS provides scalable resources and automation tools that allow companies to deploy applications faster. Services like AWS Elastic Beanstalk, AWS CloudFormation, and AWS Lambda help streamline the deployment process, enabling

  quicker time-to-market for new features and applications.

  Why Other Options Are Not Suitable:

  Option B: Elimination of the need for trained IT staff:

  While the cloud reduces certain operational burdens, it does not eliminate the need for skilled IT professionals to manage cloud services, ensure proper configurations, handle security, and manage applications.

  Option C: Automatic security configuration of all applications that are migrated to the cloud:

  AWS provides security tools and services, but security configurations and management still require input from the customer to tailor them to specific application requirements.

  Option D: Elimination of the need for disaster recovery planning:

  While AWS offers robust disaster recovery options, companies must still plan and implement disaster recovery strategies, such as backups and multi-region deployments.

• Question 125:

  Which service is an AWS in-memory data store service?

  A. Amazon Aurora
  B. Amazon RDS
  C. Amazon DynamoDB
  D. Amazon ElastiCache
  D. Amazon ElastiCache

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  Explanation

  Amazon ElastiCache is a service that offers fully managed in-memory data store and cache services that deliver sub-millisecond response times to applications. You can use Amazon ElastiCache to improve the performance of your applications by retrieving data from fast, managed, in-memory data stores, instead of relying entirely on slower disk- based databases. Amazon Aurora is a relational database service that combines the performance and availability of high-end commercial databases with the simplicity and cost-effectiveness of open source databases. Amazon RDS is a service that makes it easy to set up, operate, and scale a relational database in the cloud. Amazon DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. None of these services are in-memory data store services.

• Question 126:

  Which feature of the AWS Cloud gives users the ability to pay based on current needs rather than forecasted needs?

  A. AWS Budgets
  B. Pay-as-you-go pricing
  C. Volume discounts
  D. Savings Plans
  B. Pay-as-you-go pricing

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  Explanation

  Pay-as-you-go pricing is the feature of the AWS Cloud that gives users the ability to pay based on current needs rather than forecasted needs. Pay-as-you-go pricing means that users only pay for the AWS services and resources they use, without any upfront or long-term commitments. This allows users to scale up or down their usage depending on their changing business requirements, and avoid paying for idle or unused capacity. Pay-as-you-go pricing also enables users to benefit from the economies of scale and lower costs of AWS as they grow their business5

• Question 127:

  A company deploys its application to multiple AWS Regions and configures automatic failover between those Regions.

  Which cloud concept does this architecture represent?

  A. Security
  B. Reliability
  C. Scalability
  D. Cost optimization
  B. Reliability

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  Explanation

  Reliability is the cloud concept that this architecture represents. Reliability is the ability of a system to recover from infrastructure or service disruptions, dynamically acquire computing resources to meet demand, and mitigate disruptions such as misconfigurations or transient network issues. Deploying an application to multiple AWS Regions and configuring automatic failover between those Regions enhances the reliability of the application by reducing the impact of regional failures and increasing the availability of the application4

• Question 128:

  A company wants to build an application that uses AWS Lambda to run Python code.

  Under the AWS shared responsibility model, which tasks will be the company's responsibility? (Choose two.)

  A. Management of the underlying infrastructure.
  B. Management of the operating system.
  C. Writing the business logic code.
  D. Installation of the computer language runtime.
  E. Providing AWS Identity and Access Management (IAM) access to the Lambda service.
  C. Writing the business logic code.
  E. Providing AWS Identity and Access Management (IAM) access to the Lambda service.

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  Explanation

• Question 129:

  A company's headquarters is located on a different continent from where the majority of the company's customers live. The company wants an AWS Cloud environment setup that will provide the lowest latency to the customers.

  A company wants to automate the creation of new AWS accounts and automatically prevent all users from creating Amazon EC2 instances.

  Which AWS service provides this functionally?

  A. AWS Service Catalog
  B. AWS Organizations
  C. EC2 Image Builder
  D. AWS Systems Manager
  B. AWS Organizations

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  Explanation

  AWS Organizations is a service that enables you to create and manage multiple AWS accounts centrally. You can use AWS Organizations to automate account creation, apply policies to control access and permissions, and consolidate billing across your accounts. You can also use AWS Organizations to prevent users from creating Amazon EC2 instances in certain regions or with certain configurations

• Question 130:

  Which pillar of the AWS Well-Architected Framework focuses on the return on investment of moving into the AWS Cloud?

  A. Sustainability
  B. Cost optimization
  C. Operational excellence
  D. Reliability
  B. Cost optimization

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  Explanation

  Cost optimization is the pillar of the AWS Well-Architected Framework that focuses on the return on investment of moving into the AWS Cloud. Cost optimization means that users can achieve the desired business outcomes at the lowest possible price point, while maintaining high performance and reliability. Cost optimization can be achieved by using various AWS features and best practices, such as pay-as-you-go pricing, right- sizing, elasticity, reserved instances, spot instances, cost allocation tags, cost and usage reports, and AWS Trusted Advisor. [AWS Well-Architected Framework] AWS Certified Cloud Practitioner - aws.amazon.com