Amazon CLF-C01 Online Practice Questions and Exam Preparation

Amazon CLF-C01 Online Questions & Answers

• Question 751:

  A company wants to migrate an existing on-premises web application to AWS. The existing technology stacks consist of configuration files, application code that connects to a MySQL database by using a language-specific MySQL API, and a source code repository that holds configuration files and program code A developer uses an Amazon RDS for MySQL DB instance as the target database The developer uses a container as the compute engine for the web application program code. The developer wants to configure the database connection from the web application code to the new RDS for MySQL DB instance without refactoring the existing code The developer also must maximize security for the storage of the database user name and password pair that the application code uses.

  Which combination of steps should the developer take to meet these requirements? (Select TWO )

  A. Use the RDS software development kit (SDK) to construct a database client.
  B. Keep the existing database connectivity API code unchanged Change the database connection string URL to the endpoint of the RDS for MySQL DB instance
  C. Store the database's user name and password pair in the configuration files
  D. Use AWS Secrets Manager to store the database's user name and password pair Use the GetSecretValue API operation to retrieve the user name and password pair when the application makes MySQL DB API calls
  E. Use the environment variables of the container definition to pass the database's user name and password pair to the application code
  B. Keep the existing database connectivity API code unchanged Change the database connection string URL to the endpoint of the RDS for MySQL DB instance
  D. Use AWS Secrets Manager to store the database's user name and password pair Use the GetSecretValue API operation to retrieve the user name and password pair when the application makes MySQL DB API calls

• Question 752:

  A company wants to reconfigure its ecommerce application to automatically scale to meet customer demands. The company wants the operating system that the application runs on to be automatically updated. Which AWS service will meet these requirements?

  A. Amazon Lightsail
  B. Amazon EC2
  C. AWS Lambda
  D. Amazon EC2 Auto Scaling
  D. Amazon EC2 Auto Scaling

• Question 753:

  A company is considering implementing a new workload m the AWS Cloud However, the company first wants to forecast the potential cost.

  Which tool should the company use to estimate the cost of the workload?

  A. Cost Explorer
  B. AWS Pricing Calculator
  C. AWS Billing and Cost Management dashboard
  D. AWS Cost and Usage Report
  B. AWS Pricing Calculator

• Question 754:

  Which of the following are features of network ACLs as they are used in the AWS Cloud? (Select TWO.)

  A. They are stateless.
  B. They are stateful.
  C. They evaluate all rules before allowing traffic.
  D. They process rules in order, starting with the lowest numbered rule, when deciding whether to allow traffic.
  E. They operate at the instance level.
  A. They are stateless.
  D. They process rules in order, starting with the lowest numbered rule, when deciding whether to allow traffic.

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  Explanation/Reference:

  https://docs.aws.amazon.com/vpc/latest/userguide/vpc-network-acls.html

  Network ACLs are stateless, which means that responses to allowed inbound traffic are subject to the rules for outbound traffic (and vice versa).

  Rules are evaluated starting with the lowest numbered rule. As soon as a rule matches traffic, it's applied regardless of any higher-numbered rule that might contradict it.

• Question 755:

  A company is moving multiple applications to a single AWS account. The company wants to monitor the AWS Cloud costs incurred by each application.

  What can the company do to meet this requirement?

  A. Set up invoiced billing.
  B. Use AWS Artifact.
  C. Set budgets in Cost Explorer.
  D. Create cost allocation tags.
  D. Create cost allocation tags.

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  Explanation/Reference:

  Reference: https://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/cost-alloc-tags.html

• Question 756:

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

  A. Resource scalability
  B. Performance efficiency
  C. System elasticity
  D. Agile development
  E. Operational excellence
  B. Performance efficiency
  E. Operational excellence

• Question 757:

  A company runs a database on Amazon Aurora in the us-east-1 Region. The company has a disaster recovery requirement that the database be available in another Region.

  Which solution meets this requirement with minimal disruption to the database operations?

  A. Perform an Aurora Multi-AZ deployment.
  B. Deploy Aurora cross-Region read replicas.
  C. Create Amazon Elastic Block Store (Amazon EBS) volume snapshots for Aurora and copy them to another Region.
  D. Deploy Aurora Replicas.
  D. Deploy Aurora Replicas.

• Question 758:

  A company needs to receive notification when a deployed workload is using more than a certain percentage of a service quota. Which AWS service should the company use to meet this requirement?

  A. AWS config
  B. AWS CloudTrail
  C. AWS Trusted Advisor
  D. AWS Lambda
  C. AWS Trusted Advisor

• Question 759:

  How can users protect against distributed denial of service (DDoS) attacks in the AWS Cloud?

  A. Use Amazon CloudWatch monitoring.
  B. Configure a firewall.
  C. Use Amazon Redshift
  D. Monitor AWS CloudTrail logging
  B. Configure a firewall.

• Question 760:

  How does AWS Cloud computing help businesses reduce costs? (Select TWO.)

  A. AWS charges the same prices for services in every AWS Region.
  B. AWS enables capacity to be adjusted on demand.
  C. AWS offers discounts for Amazon EC2 instances that remain idle for more than 1 week.
  D. AWS does not charge for data sent from the AWS Cloud to the internet.
  E. AWS eliminates many of the costs of building and maintaining on-premises data centers.
  B. AWS enables capacity to be adjusted on demand.
  E. AWS eliminates many of the costs of building and maintaining on-premises data centers.

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  Explanation/Reference:

  B. AWS enables capacity to be adjusted on demand, which means that businesses can quickly scale their resources up or down to meet demand, paying only for what they use. This reduces the need for businesses to invest in expensive hardware that may not be fully utilized.

  E. AWS eliminates many of the costs of building and maintaining on-premises data centers. With AWS, businesses can avoid the upfront costs of purchasing hardware, as well as ongoing costs such as electricity, cooling, and maintenance.