Amazon Amazon Certifications CLF-C01 Questions & Answers

• Question 311:

  A company wants to use Amazon EC2 instances to run a stateless and restartable process after business hours. Which instance purchasing option will meet these requirements MOST cost-effectively?

  A. Spot Instances

  B. Reserved Instances

  C. Dedicated Hosts

  D. On-Demand Instances

  Correct Answer: A

  Spot instances are recommended for:

  1.) Applications that have flexible start and end times 2.) Applications that are feasible only at very low compute prices 3.) Users with urgent computing needs for large amounts of additional capacity Ref link: https://aws.amazon.com/ec2/pricing/#:~:text=Spot%20instances%20are%20recommended% 20for,flexible%20start%20and%20end%20times

• Question 312:

  Which AWS service should a cloud engineer use to view API calls to AWS services?

  A. Amazon CloudWatch

  B. AWS CloudTrail

  C. AWS config

  D. AWS Artifact

  Correct Answer: B

  You can use AWS CloudTrail data to view and track API calls made to your account using the following:

  CloudTrail Event history CloudTrail Lake Amazon CloudWatch Logs Amazon Athena queries Amazon Simple Storage Service (Amazon S3) archived log files

  CloudTrail is a web service that records AWS API calls for your AWS account and delivers log files to an Amazon S3 bucket. The recorded information includes the identity of the user, the start time of the AWS API call, the source IP address, the request parameters, and the response elements returned by the service.

  Ref link: https://aws.amazon.com/premiumsupport/knowledge-center/cloudtrail-track-api/#:~:text=You% 20can%20use%20AWS%20CloudTrail,CloudTrail%20Event%20history

• Question 313:

  Which of the following is a design principle of the reliability pillar of the AWS Well-Architected Framework?

  A. Scale globally in minutes.

  B. Adopt a consumption model.

  C. Automatically recover from failure.

  D. Make frequent, small, reversible changes.

  Correct Answer: C

  Automatically recover from failure: By monitoring a workload for key performance indicators (KPIs), you can trigger automation when a threshold is breached. These KPIs should be a measure of business value, not of the technical aspects of the operation of the service. This allows for automatic notification and tracking of failures, and for automated recovery processes that work around or repair the failure. With more sophisticated automation, it's possible to anticipate and remediate failures before they occur.

  Ref link: https://docs.aws.amazon.com/wellarchitected/latest/reliability-pillar/design-principles.html

• Question 314:

  An ecommerce application uses Java Message Service (JMS) messaging to communicate between its ful llment center and the application after an order has been placed. The company wants to migrate its messaging application to AWS. The company also wants to minimize the effort used to rewrite the messaging code.

  Which AWS service will meet these requirements?

  A. Amazon Simple notification Service (Amazon SNS)

  B. Amazon Simple Email Service (Amazon SES)

  C. Amazon Pinpoint

  D. Amazon MQ

  Correct Answer: D

  Amazon MQ makes it easy to setup and operate message brokers in the cloud. With Amazon MQ, you can use the AWS Management Console, CLI, or API calls to launch a production-ready message broker in minutes. In most cases, you can simply update the endpoints of your Amazon MQ broker to connect to your existing applications and start sending messages.

  Amazon MQ is suitable for enterprise IT pros, developers, and architects who are managing a message broker themselveshether on-premises or in the cloudnd want to move to a fully managed cloud service without rewriting the messaging code in their applications. Ref link: https://aws.amazon.com/amazon-mq/faqs/#:~:text=Amazon%20MQ%20makes%20it% 20easy,ready%20message%20broker%20in%20minutes.

  Ref link: https://aws.amazon.com/amazon-mq/faqs/

• Question 315:

  A company wants to use Amazon EC2 instances to provide a static website to users all over the world. The company needs to minimize latency for the users. Which solution meets these requirements?

  A. Use EC2 instances in a single Availability Zone.

  B. Use EC2 instances across multiple Availability Zones in the same AWS Region.

  C. Use Amazon CloudFront with the EC2 instances configured as the source.

  D. Use EC2 instances in the same edge location and the same AWS Region.

  Correct Answer: C

  Amazon CloudFront works seamlessly with Amazon EC2 to accelerate the delivery of your dynamic content. In addition, if you use AWS origins such as Amazon S3, Amazon EC2 or Elastic Load Balancing, you don't pay for any data transferred between these services and CloudFront.

  Ref link: https://aws.amazon.com/cloudfront/getting-started/EC2/

• Question 316:

  Which component of the AWS global infrastructure does Amazon CloudFront use to speed up the delivery of content to users across the world?

  A. Amazon VPC

  B. Edge location

  C. Local Zone

  D. AWS Outposts connection

  Correct Answer: B

  You create a CloudFront distribution to tell CloudFront where you want content to be delivered from, and the details about how to track and manage content delivery. Then CloudFront uses computers--edge servers--that are close to your viewers to deliver that content quickly when someone wants to see it or use it.

  CloudFront speeds up content delivery by leveraging its global network of data centers, known as edge locations, to reduce delivery time by caching your content close to your end users.

  Ref link: https://docs.aws.amazon.com/AmazonCloudFront/latest/DeveloperGuide/Introduction.html and https://aws.amazon.com/getting-started/hands-on/deliver-content-faster/#:~:text=CloudFront%20speeds% 20up%20content% 20delivery,close%20to%20your%20end%20users.

• Question 317:

  A company is building a new application on AWS. The company needs the application to remain available if an individual application component fails. Which design principle should the company use to meet this requirement?

  A. Disposable resources

  B. Automation

  C. Rightsizing

  D. Loose coupling

  Correct Answer: D

  D. Loose coupling is the design principle that should be used to meet the requirement of the application remaining available if an individual application component fails.

• Question 318:

  Which of the following are pillars of the AWS Well-Architected Framework? (Choose two.)

  A. High availability

  B. Performance efficiency

  C. Cost optimization

  D. Going global in minutes

  E. Continuous development

  Correct Answer: BC

  Ref link: https://aws.amazon.com/architecture/well-architected/?wa-lens-whitepapers.sort- by=item.additionalFields.sortDateandwa-lens-whitepapers.sort-order=descandwa-guidance-whitepapers.sort- by=item.additionalFields.sortDateandwaguidance-whitepapers.sort-order=desc

• Question 319:

  Which encryption types can be used to protect objects at rest in Amazon S3? (Choose two.)

  A. Server-side encryption with Amazon S3 managed encryption keys (SSE-S3)

  B. Server-side encryption with AWS KMS managed keys (SSE-KMS)

  C. TLS

  D. SSL

  E. Transparent Data Encryption (TDE)

  Correct Answer: AB

  A. Server-side encryption with Amazon S3 managed encryption keys (SSE-S3) and B. Server-side encryption with AWS KMS managed keys (SSE-KMS) are two encryption types that can be used to protect objects at rest in Amazon S3.

• Question 320:

  Which tasks are the responsibility of AWS, according to the AWS shared responsibility model? (Choose two.)

  A. Patch AWS network devices.

  B. Set user password rules.

  C. Provide physical security for compute resources.

  D. configure security groups.

  E. Patch the operating system of an Amazon EC2 instance.

  Correct Answer: AC