Amazon CLF-C01 Online Practice Questions and Exam Preparation

Amazon CLF-C01 Online Questions & Answers

• Question 841:

  A user has limited knowledge o( AWS services, but wants to quickly deploy a scalable Node.js application in the AWS Cloud. Which service should be used to deploy the application?

  A. AWS CloudFormation
  B. AWS Elastic Beanstalk
  C. Amazon EC2
  D. AWS OpsWorks
  B. AWS Elastic Beanstalk

• Question 842:

  A company wants to offer direct phone and chat channels for customer service. The company needs a pay-as-you-go solution that remote customer service agents can use to create and manage voice and chat contact flows. Which AWS service will meet these requirements?

  A. Amazon EventBridge (Amazon CloudWatch Events)
  B. Amazon Connect
  C. Amazon Cognito
  D. AWS Direct Connect
  B. Amazon Connect

• Question 843:

  Which database engines does Amazon Aurora support? (Choose two.)

  A. Oracle
  B. Microsoft SQL Server
  C. MySQL
  D. PostgreSQL
  E. MongoDB
  C. MySQL
  D. PostgreSQL

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  Explanation/Reference:

  Amazon Aurora supports MySQL and PostgreSQL database engines. Therefore, options C and D are correct.

  Amazon Aurora is a relational database service provided by Amazon Web Services (AWS) that is compatible with MySQL and PostgreSQL databases. It is designed to be highly scalable and available with automatic data replication and failover capabilities.

• Question 844:

  A company is using Amazon RDS as the backend database for its application After a recent marketing campaign, a surge of read requests to the database increased the latency of data retrieval from the database.

  The company has decided to implement a caching layer in front of the database. The cached content must be encrypted and must be highly available.

  Which solution will meet these requirements?

  A. Amazon CloudFront
  B. Amazon ElastiCache for Memcached
  C. Amazon ElastiCache for Redis in cluster mode
  D. Amazon DynamoDB Accelerator (DAX)
  C. Amazon ElastiCache for Redis in cluster mode

• Question 845:

  A company needs to migrate an existing on-premises database to the AWS Cloud. The company must be able to install custom software on the database instance. Which AWS service can the company use to meet these requirements?

  A. Amazon DynamoDB
  B. Amazon RDS
  C. Amazon EC2
  D. Amazon Redshift
  B. Amazon RDS

• Question 846:

  Which AWS service can run a managed PostgreSQL database that provides online transaction processing (OLTP)?

  A. Amazon DynamoDB
  B. Amazon Athena
  C. Amazon RDS
  D. Amazon EMR
  C. Amazon RDS

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  Explanation/Reference:

  https://aws.amazon.com/blogs/big-data/join-amazon-redshift-and-amazon-rds-postgresql-with- dblink/

• Question 847:

  Which AWS service could an administrator use to provide desktop environments for several employees?

  A. AWS Organizations
  B. AWS Fargate
  C. AWS WAF
  D. AWS Workspaces
  D. AWS Workspaces

• Question 848:

  Which of the following describes a security best practice that can be implemented using AWS IAM?

  A. Disable AWS Management Console access for all users
  B. Generate secret keys for every IAM user
  C. Grant permissions to users who are required to perform a given task only
  D. Store AWS credentials within Amazon EC2 instances
  C. Grant permissions to users who are required to perform a given task only

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  Explanation/Reference:

  Reference: https://cloudcheckr.com/cloud-security/top-5-iam-best-practices/

• Question 849:

  A company is reviewing the current costs of running its own infrastructure on premises. The company wants to compare these on-premises costs to the costs of running infrastructure in the AWS Cloud. How should the company make this comparison?

  A. Review the AWS shared responsibility model.
  B. Audit existing software and hardware licensing costs.
  C. Analyze the AWS Well-Architected Framework.
  D. Use Migration Evaluator.
  D. Use Migration Evaluator.

• Question 850:

  When is it beneficial for a company to use a Spot Instance?

  A. When there is flexibility in when an application needs to run.
  B. When there are mission-critical workloads.
  C. When dedicated capacity is needed.
  D. When an instance should not be stopped.
  A. When there is flexibility in when an application needs to run.

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  Explanation/Reference:

  The key to understanding spot instances is to look at the way that cloud service providers such as Amazon Web Services (AWS) operate. Cloud service providers invest in hardware resources and then release those resources (often on a per-hour basis) to subscribers. One of the problems with this business model, however, is that at any given time, there are likely to be compute resources that are not being utilized. These resources represent hardware capacity that AWS has paid for but are sitting idle, and not making AWS any money at the moment.

  Rather than allowing these computing resources to go to waste, AWS offers them at a substantially discounted rate, with the understanding that if someone needs those resources for running a normal EC2 instance, that instance will take priority over spot instances that are using the hardware resources at a discounted rate. In fact, spot instances will be stopped if the resources are needed elsewhere.

  Reference: https://awsinsider.net/articles/2017/09/25/aws-spot-instances-primer.aspx