# Practice Exam 3

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1. Where can you store files in AWS? (Choose TWO)
    - A. Amazon EFS.
    - B. Amazon SNS.
    - C. Amazon EBS.
    - D. Amazon ECS.
    - E. Amazon EMR.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, C
    </details>

2. Which AWS service can be used to store and reliably deliver messages across distributed systems?
    - A. Amazon Simple Queue Service.
    - B. AWS Storage Gateway.
    - C. Amazon Simple Email Service.
    - D. Amazon Simple Storage Service.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

3. Which of the following describes the payment model that AWS makes available for customers that can commit to using Amazon EC2 over a one or 3-year term to reduce their total computing costs?
    - A. Pay less as AWS grows.
    - B. Pay as you go.
    - C. Pay less by using more.
    - D. Save when you reserve.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

4. A company is migrating its on-premises database to Amazon RDS. What should the company do to ensure Amazon RDS costs are kept to a minimum?
    - A. Right-size before and after migration.
    - B. Use a Multi-Region Active-Passive architecture.
    - C. Combine On-demand Capacity Reservations with Saving Plans.
    - D. Use a Multi-Region Active-Active architecture.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

5. What is the primary storage service used by Amazon RDS database instances?
    - A. Amazon Glacier.
    - B. Amazon EBS.
    - C. Amazon EFS.
    - D. Amazon S3.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

6. A company is developing a new application using a microservices framework. The new application is having performance and latency issues. Which AWS Service should be used to troubleshoot these issues?
    - A. AWS CodePipeline.
    - B. AWS X-Ray.
    - C. Amazon Inspector.
    - D. AWS CloudTrail.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

7. Which of the following AWS services is designed with native Multi-AZ fault tolerance in mind? (Choose TWO)
    - A. Amazon Redshift.
    - B. AWS Snowball.
    - C. Amazon Simple Storage Service.
    - D. Amazon EBS.
    - E. Amazon DynamoDB.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: C, E
    </details>

8. What are the Amazon RDS features that can be used to improve the availability of your database? (Choose TWO)
    - A. AWS Regions.
    - B. Multi-AZ Deployment.
    - C. Automatic patching.
    - D. Read Replicas.
    - E. Edge Locations.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B, D
    </details>

9. Sarah has deployed an application in the Northern California (us-west-1) region. After examining the application’s traffic, she notices that about 30% of the traffic is coming from Asia. What can she do to reduce latency for the users in Asia?
    - A. Replicate the current resources across multiple Availability Zones within the same region.
    - B. Migrate the application to a hosting provider in Asia.
    - C. Recreate the website content.
    - D. Create a CDN using CloudFront, so that content is cached at Edge Locations close to and in Asia.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

10. An organization runs many systems and uses many AWS products. Which of the following services enables them to control how each developer interacts with these products?
    - A. AWS Identity and Access Management.
    - B. Amazon RDS.
    - C. Network Access Control Lists.
    - D. Amazon EMR.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

11. Using Amazon EC2 falls under which of the following cloud computing models?
    - A. Iaas & SaaS.
    - B. IaaS.
    - C. SaaS.
    - D. PaaS.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

12. Which of the below is a best-practice when building applications on AWS?
    - A. Strengthen physical security by applying the principle of least privilege.
    - B. Ensure that the application runs on hardware from trusted vendors.
    - C. Use IAM policies to maintain performance.
    - D. Decouple the components of the application so that they run independently.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

13. Your company is designing a new application that will store and retrieve photos and videos. Which of the following services should you recommend as the underlying storage mechanism?
    - A. Amazon EBS.
    - B. Amazon SQS.
    - C. Amazon Instance store.
    - D. Amazon S3.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

14. Amazon Glacier is an Amazon S3 storage class that is suitable for storing [...] & [...]. (Choose TWO)
    - A. Active archives.
    - B. Dynamic websites’ assets.
    - C. Long-term analytic data.
    - D. Active databases.
    - E. Cached data.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, C
    </details>

15. What does Amazon Elastic Beanstalk provide?
    - A. A PaaS solution to automate application deployment.
    - B. A compute engine for Amazon ECS.
    - C. A scalable file storage solution for use with AWS and on-premises servers.
    - D. A NoSQL database service.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

16. What is the AWS service that performs automated network assessments of Amazon EC2 instances to check for vulnerabilities?
    - A. Amazon Kinesis.
    - B. Security groups.
    - C. Amazon Inspector.
    - D. AWS Network Access Control Lists.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: C
    </details>

17. Under the Shared Responsibility Model, which of the following controls do customers fully inherit from AWS? (Choose TWO)
    - A. Patch management controls.
    - B. Database controls.
    - C. Awareness & Training.
    - D. Environmental controls.
    - E. Physical controls.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D, E
    </details>

18. A company needs to host a database in Amazon RDS for at least three years. Which of the following options would be the most cost-effective solution?
    - A. Reserved instances     - No Upfront.
    - B. Reserved instances     - Partial Upfront.
    - C. On-Demand instances.
    - D. Spot Instances.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

19. Your application has recently experienced significant global growth, and international users are complaining of high latency. What is the AWS characteristic that can help improve your international users’ experience?
    - A. Elasticity.
    - B. Global reach.
    - C. Data durability.
    - D. High availability.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

20. Savings Plans are available for which of the following AWS compute services? (Choose TWO)
    - A. AWS Batch.
    - B. AWS Outposts.
    - C. Amazon Lightsail.
    - D. Amazon EC2.
    - E. AWS Lambda.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D, E
    </details>

21. A company has business critical workloads hosted on AWS and they are unwilling to accept any downtime. Which of the following is a recommended best practice to protect their workloads in the event of an unexpected natural disaster?
    - A. Replicate data across multiple Edge Locations worldwide and use Amazon CloudFront to perform automatic failover in the event of an outage.
    - B. Deploy AWS resources across multiple Availability Zones within the same AWS Region.
    - C. Create point-in-time backups in another subnet and recover this data when a disaster occurs.
    - D. Deploy AWS resources to another AWS Region and implement an Active-Active disaster recovery strategy.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

22. Which statement is correct with regards to AWS service limits? (Choose TWO)
    - A. You can contact AWS support to increase the service limits.
    - B. Each IAM user has the same service limit.
    - C. There are no service limits on AWS.
    - D. You can use the AWS Trusted Advisor to monitor your service limits.
    - E. The Amazon Simple Email Service is responsible for sending email notifications when usage approaches a service limit.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, D
    </details>

23. What is the AWS tool that enables you to use scripts to manage all AWS services and resources?
    - A. AWS Console.
    - B. AWS Service Catalog.
    - C. AWS OpsWorks.
    - D. AWS CLI.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

24. What are the connectivity options that can be used to build hybrid cloud architectures? (Choose TWO)
    - A. AWS Artifact.
    - B. AWS Cloud9.
    - C. AWS Direct Connect.
    - D. AWS CloudTrail.
    - E. AWS VPN.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: C, E
    </details>

25. A company has deployed a new web application on multiple Amazon EC2 instances. Which of the following should they use to ensure that the incoming HTTP traffic is distributed evenly across the instances?
    - A. AWS EC2 Auto Recovery.
    - B. AWS Auto Scaling.
    - C. AWS Network Load Balancer.
    - D. AWS Application Load Balancer.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

26. Which of the following AWS offerings is a MySQL-compatible relational database service that can scale capacity automatically based on demand?
    - A. Amazon Neptune.
    - B. Amazon Aurora.
    - C. Amazon RDS for SQL Server.
    - D. Amazon RDS for PostgreSQL.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

27. Which of the following can help protect your EC2 instances from DDoS attacks? (Choose TWO)
    - A. AWS CloudHSM.
    - B. Security Groups.
    - C. AWS Batch.
    - D. AWS IAM.
    - E. Network Access Control Lists (Network ACLs).

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B, E
    </details>

28. What is the AWS data warehouse service that supports a high level of query performance on large amounts of datasets?
    - A. Amazon Redshift.
    - B. Amazon Kinesis.
    - C. Amazon DynamoDB.
    - D.  Amazon RDS.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

29. Which of the following should be considered when performing a TCO analysis to compare the costs of running an application on AWS instead of on-premises?
    - A. Application development.
    - B. Market research.
    - C. Business analysis.
    - D. Physical hardware.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

30. How are AWS customers billed for Linux-based Amazon EC2 usage?
    - A. EC2 instances will be billed on one second increments, with a minimum of one minute.
    - B. EC2 instances will be billed on one hour increments, with a minimum of one day.
    - C. EC2 instances will be billed on one minute increments, with a minimum of one hour.
    - D. EC2 instances will be billed on one day increments, with a minimum of one month.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

31. Which of the following will impact the price paid for an EC2 instance? (Choose TWO)
    - A. Instance type.
    - B. The Availability Zone where the instance is provisioned.
    - C. Load balancing.
    - D. Number of buckets.
    - E. Number of private IPs.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, C
    </details>

32. A customer spent a lot of time configuring a newly deployed Amazon EC2 instance. After the workload increases, the customer decides to provision another EC2 instance with an identical configuration. How can the customer achieve this?
    - A. By creating an AWS Config template from the old instance and launching a new instance from it.
    - B. By creating an EBS Snapshot of the old instance.
    - C. By installing Aurora on EC2 and launching a new instance from it.
    - D. By creating an AMI from the old instance and launching a new instance from it.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

33. A company uses AWS Organizations to manage all of its AWS accounts. Which of the following allows the company to restrict what services and actions are allowed in each individual account?
    - A. IAM Principals.
    - B. AWS Service Control Policies (SCPs).
    - C. IAM policies.
    - D. AWS Fargate.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

34. Which of the following statements describes the AWS Cloud’s agility?
    - A. AWS allows you to host your applications in multiple regions around the world.
    - B. AWS provides customizable hardware at the lowest possible cost.
    - C. AWS allows you to provision resources in minutes.
    - D. AWS allows you to pay upfront to reduce costs.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: C
    </details>

35. What are the benefits of using the Amazon Relational Database Service? (Choose TWO)
    - A. Lower administrative burden.
    - B. Complete control over the underlying host.
    - C. Resizable compute capacity.
    - D. Scales automatically to larger or smaller instance types.
    - E. Supports the document and key-value data structure.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, C
    </details>

36. What is the connectivity option that uses Internet Protocol Security (IPSec) to establish encrypted connectivity between an on-premises network and the AWS Cloud?
    - A. Internet Gateway.
    - B. AWS IQ.
    - C. AWS Direct Connect.
    - D. AWS Site-to-Site VPN.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

37. What is the minimum level of AWS support that provides 24x7 access to technical support engineers via phone and chat?
    - A. Enterprise Support.
    - B. Developer Support.
    - C. Basic Support.
    - D. Business Support.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

38. Which of the following is used to control network traffic in AWS? (Choose TWO)
    - A. Network Access Control Lists (NACLs).
    - B. Key Pairs.
    - C. Access Keys.
    - D. IAM Policies.
    - E. Security Groups.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, E
    </details>

39. A company has developed a media transcoding application in AWS. The application is designed to recover quickly from hardware failures. Which one of the following types of instance would be the most cost-effective choice to use?
    - A. Reserved instances.
    - B. Spot Instances.
    - C. On-Demand instances.
    - D. Dedicated instances.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

40. Which AWS Service provides the current status of all AWS Services in all AWS Regions?
    - A. AWS Service Health Dashboard.
    - B. AWS Management Console.
    - C. Amazon CloudWatch.
    - D. AWS Personal Health Dashboard.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

41. Which AWS service or feature can be used to call AWS Services from different programming languages?
    - A. AWS Software Development Kit.
    - B. AWS Command Line Interface.
    - C. AWS CodeDeploy.
    - D. AWS Management Console.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

42. Which AWS Service can be used to register a new domain name?
    - A. Amazon Personalize.
    - B. Amazon Route 53.
    - C. AWS KMS.
    - D. AWS Config.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

43. App development companies move their business to AWS to reduce time-to-market and improve customer satisfaction, what are the AWS automation tools that help them deploy their applications faster? (Choose TWO)
    - A. AWS CloudFormation.
    - B. AWS Migration Hub.
    - C. AWS IAM.
    - D. AWS Elastic Beanstalk.
    - E. Amazon Macie.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A, D
    </details>

44. Which AWS service provides cost-optimization recommendations?
    - A. AWS Trusted Advisor.
    - B. AWS Pricing Calculator.
    - C. Amazon QuickSight.
    - D. AWS X-Ray.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

45. A company has hundreds of VPCs in multiple AWS Regions worldwide. What service does AWS offer to simplify the connection management among the VPCs?
    - A. VPC Peering.
    - B. AWS Transit Gateway.
    - C. Amazon Connect.
    - D. Security Groups.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

46. What is one benefit and one drawback of buying a reserved EC2 instance? (Select TWO)
    - A. Instances can be shut down by AWS at any time with no notification.
    - B. Reserved instances require at least a one-year pricing commitment.
    - C. There is no additional charge for using dedicated instances.
    - D. Reserved instances provide a significant discount compared to on-demand instances.
    - E.Reserved instances are best suited for periodic workloads.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B, D
    </details>

47. Why does every AWS Region contain multiple Availability Zones?
    - A. Multiple Availability Zones allows you to build resilient and highly available architectures.
    - B. Multiple Availability Zones results in lower total cost compared to deploying in a single Availability Zone.
    - C. Multiple Availability Zones allows for data replication and global reach.
    - D. Multiple Availability Zones within a region increases the storage capacity available in that region.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

48. What is the most cost-effective purchasing option for running a set of EC2 instances that must always be available for a period of two months?
    - A. On-Demand Instances.
    - B. Spot Instances.
    - C. Reserved Instances     - All Upfront.
    - D. Reserved Instances     - No Upfront.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: A
    </details>

49. Which of the following is a benefit of running an application in multiple Availability Zones?
    - A. Allows you to exceed AWS service limits.
    - B. Reduces application response time between servers and global users.
    - C. Increases available compute capacity.
    - D. Increases the availability of your application.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: D
    </details>

50. Data security is one of the top priorities of AWS. How does AWS deal with old storage devices that have reached the end of their useful life?
    - A. AWS sells the old devices to other hosting providers.
    - B. AWS destroys the old devices in accordance with industry-standard practices.
    - C. AWS sends the old devices for remanufacturing.
    - D. AWS stores the old devices in a secure place.

    <details markdown=1><summary markdown='span'>Answer</summary>
      Correct answer: B
    </details>

Please feel free to comment below if any information is inaccurate or if any answers need correction.

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