Amazon Amazon Certifications CLF-C01 Questions & Answers

• Question 2081:

  Which AWS service should be used for long-term, low-cost storage of data backups?

  A. Amazon RDS

  B. Amazon Glacier

  C. AWS Snowball

  D. AWS EBS

  Correct Answer: B

  Amazon S3 Glacier is a secure, durable, and low-cost storage class of S3 for data archiving and long-term backup. Customers can store large or small amounts of data for as little as $0.004 per gigabyte per month. The S3 Glacier storage class is ideal for archives where data is regularly retrieved and some of the data may be needed in minutes.

  Amazon RDS is a relational database service that hosts databases. It helps you create and manage databases. Amazon Snowball is a petabyte-scale data transfer service that provides cost efficient data transfer to AWS from tamper proof physical devices. Similarly, Elastic block storage offers persistent block storage volumes for EC2 instances.

  Reference: https://aws.amazon.com/backup-restore/services/

• Question 2082:

  When architecting cloud applications, which of the following are a key design principle?

  A. Use the largest instance possible

  B. Provision capacity for peak load

  C. Use the Scrum development process

  D. Implement elasticity

  Correct Answer: B

  Cloud services main proposition is to provide elasticity through horizontal scaling. It's already there. As for using largest instance possible, it is not a design principle that helps cloud applications in anyway. Scrum development process is not related to architecting. Therefore, a key principle is to provision your application for on-demand capacity. Peak loads is something that cloud applications experience everyday. Peak load management should be a necessary part of cloud application design principle.

  Reference: https://d1.awsstatic.com/whitepapers/AWS_Cloud_Best_Practices.pdf

• Question 2083:

  Which AWS service provides a simple and scalable shared file storage solution for use with Linux-based AWS and on-premises servers?

  A. Amazon S3

  B. Amazon Glacier

  C. Amazon EBS

  D. Amazon EFS

  Correct Answer: D

  Amazon Elastic File System (Amazon EFS) provides a simple, scalable, fully managed elastic NFS file system for use with AWS Cloud services and on-premises resources. It is built to scale on demand to petabytes without disrupting applications, growing and shrinking automatically as you add and remove files, eliminating the need to provision and manage capacity to accommodate growth.

  Amazon EFS is designed to provide the throughput, IOPS, and low latency needed for Linux workloads. Throughput and IOPS scale as a file system grows and can burst to higher throughput levels for short periods of time to support the unpredictable performance needs of file workloads. For the most demanding workloads, Amazon EFS can support performance over 10 GB/sec and up to 500,000 IOPS.

• Question 2084:

  Which AWS managed service is used to host databases?

  A. AWS Batch

  B. AWS Artifact

  C. AWS Data Pipeline

  D. Amazon RDS

  Correct Answer: D

  Amazon Relational Database Service (Amazon RDS) makes it easy 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. It frees you to focus on your applications so you can give them the fast performance, high availability, security and compatibility they need.

  Reference: https://aws.amazon.com/rds/?c=dbandsec=srv

• Question 2085:

  Which of the following security-related services does AWS offer? (Choose two.)

  A. Multi-factor authentication physical tokens

  B. AWS Trusted Advisor security checks

  C. Data encryption

  D. Automated penetration testing

  E. Amazon S3 copyrighted content detection

  Correct Answer: BC

  AWS encrypts data in transit and AWS Trusted Advisor is an application that draws upon best practices learned from AWS' aggregated operational history of serving hundreds of thousands of AWS customers. Trusted Advisor inspects your AWS environment and makes recommendations for saving money, improving system performance, or closing security gaps.

  Reference: https://aws.amazon.com/security/

• Question 2086:

  Which service provides a virtually unlimited amount of online highly durable object storage?

  A. Amazon Redshift

  B. Amazon Elastic File System (Amazon EFS)

  C. Amazon Elastic Container Service (Amazon ECS)

  D. Amazon S3

  Correct Answer: D

  Reference: https://aws.amazon.com/what-is-cloud-object-storage/

• Question 2087:

  Which of the following Identity and Access Management (IAM) entities is associated with an access key ID and secret access key when using AWS Command Line Interface (AWS CLI)?

  A. IAM group

  B. IAM user

  C. IAM role

  D. IAM policy

  Correct Answer: D

  Reference: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_access-keys.html

• Question 2088:

  Web servers running on Amazon EC2 access a legacy application running in a corporate data center. What term would describe this model?

  A. Cloud-native

  B. Partner network

  C. Hybrid architecture

  D. Infrastructure as a service

  Correct Answer: C

  Reference: https://aws.amazon.com/enterprise/hybrid/

• Question 2089:

  What is the benefit of using AWS managed services, such as Amazon ElastiCache and Amazon Relational Database Service (Amazon RDS)?

  A. They require the customer to monitor and replace failing instances.

  B. They have better performance than customer-managed services.

  C. They simplify patching and updating underlying OSs.

  D. They do not require the customer to optimize instance type or size selections.

  Correct Answer: B

• Question 2090:

  The AWS Cloud's multiple Regions are an example of:

  A. agility.

  B. global infrastructure.

  C. elasticity.

  D. pay-as-you-go pricing.

  Correct Answer: B