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Question 1:
A company is developing an application that the company will host on Amazon EC2 instances. The application must be available 24 hours a day, 7 days a week. The company needs a scalable, highly available cloud architecture to support the application.
Which guidelines should the company apply in its design to meet these requirements? (Choose two.)
A. Use EC2 Spot Instances
B. Use Multi-AZ deployments.
C. Use Auto Scaling groups
D. Use AWS Backup.
E. Use EC2 Reserved Instances.
Correct Answer: BD
B. Use Multi-AZ deployments.
C. Use Auto Scaling groups
B. Use Multi-AZ deployments: Multi-AZ deployments allow the company to run the application across multiple availability zones within a region. This provides high availability and automatic failover in the event of a failure in one availability zone.
C. Use Auto Scaling groups: Auto Scaling groups allow the company to automatically add or remove Amazon EC2 instances based on the demand for the application, which is important for ensuring high availability and scalability.
A. Use EC2 Spot Instances: EC2 Spot Instances can be used for cost optimization, but it is not recommended for highly available workloads since it can be interrupted by the provider based on the current market price.
D. Use AWS Backup: AWS Backup is a good practice for data protection and disaster recovery, but it is not related to high availability and scalability.
E. Use EC2 Reserved Instances: EC2 Reserved Instances are a cost-saving option, but they are not related to high availability and scalability.
Question 2:
A company wants optimized pricing for its Amazon EC2 instances. The applications running on these instances cannot tolerate interruptions, and the workloads must remain in operation for at least 1 year.
Which purchasing options should the company use to meet these requirements? (Select TWO.)
A. Reserved Instances
B. Spot Instances
C. AWS Marketplace subscriptions
D. Savings Plans
E. Dedicated Hosts
Correct Answer: AC
Question 3:
A company is developing a report implemented using AWS Step Functions. Amazon CloudWatch shows errors in the Step Functions task state machine. To troubleshoot each task the state input needs to be included along with the error message in the state output.
Which coding practice can preserve both the original input and the error for the state?
A. Use ResultPath in a Catch statement to include the error with the original input
B. Use InputPath in a Catch statement and set the value to null.
C. Use ErrorEquals in a Retry statement to include the error with the original input
D. Use OutputPath in a Retry statement and set the value to $.
Correct Answer: A
Question 4:
A company wants to migrate a small website and database quickly from on-premises infrastructure to the AWS Cloud. The company has limited operational knowledge to perform the migration. Which AWS service supports this use case?
A. Amazon EC2
B. Amazon Lightsail
C. Amazon S3
D. AWS Lambda
Correct Answer: B
Reference: https://docs.aws.amazon.com/prescriptive-guidance/latest/patterns/migrate-small-sets-of-data-from-on-premises-to-amazon-s3-using-aws-sftp.html
Question 5:
Which AWS service can be used to manually launch instances based on resource requirements?
A. Amazon EBS
B. Amazon S3
C. Amazon EC2
D. Amazon ECS
Correct Answer: C
Question 6:
A bank needs to store recordings of calls made to its contact center tor 6 years. The recordings must be accessible within 48 hours from the time they are requested. Which AWS service will provide a secure and cost-effective solution for retaining these files?
A. Amazon DynamoDB
B. Amazon S3 Glacier
C. Amazon Connect
D. Amazon ElastiCache
Correct Answer: B
Reference: https://docs.aws.amazon.com/connect/latest/adminguide/set-up-recordings.html
Question 7:
How can a user achieve high availability for a web application hosted on AWS?
A. Use a Classic Load Balancer across multiple AWS Regions
B. Use an Application Load Balancer across multiple Availability Zones in one AWS Region
C. Set up automatic scaling and load balancing with another application instance running on premises
D. Use the AWS Region with the highest number of Availability Zones
Correct Answer: B
Question 8:
A company wants to centrally manage security policies and billing services within a multi-account AWS environment.
Which AWS service should the company use to meet these requirements?
A. AWS Identity and Access Management (IAM)
B. AWS Organizations
C. AWS Resource Access Manager (AWS RAM)
D. AWS Config
Correct Answer: B
Question 9:
A company wants its AWS usage to be more sustainable. The company wants to track, measure, review, and forecast polluting emissions that result from its AWS applications. Which AWS service or tool can the company use to meet these requirements?
A. AWS Health Dashboard
B. AWS customer carbon footprint tool
C. AWS Support Center
D. Amazon QuickSight
Correct Answer: B
B. AWS customer carbon footprint tool is the correct choice for the company to track, measure, review, and forecast polluting emissions that result from its AWS applications. The AWS customer carbon footprint tool provides an estimate of the carbon emissions associated with the use of AWS services. It allows customers to measure their carbon footprint, track key metrics, and monitor progress towards reduction goals. This tool can also help customers to understand the environmental impact of their use of AWS services and identify areas for improvement.
Question 10:
A company is building an application for stock trading. The application needs sub- millisecond latency for processing trade requests. The company uses Amazon DynamoDB to store all the trading data that is used to process each trading
request.
A development team performs load testing on the application and finds that the data retrieval time is higher than expected. The development team needs a solution that reduces the data retrieval time with the least possible effort.
Which solution meets these requirements?
A. Add local secondary indexes (LSIs) for the trading data
B. Store the trading data in Amazon S3 and use S3 Transfer Acceleration
C. Add retries with exponential backoff for DynamoDB queries
D. Use DynamoDB Accelerator (DAX) to cache the trading data
Correct Answer: D
Question 11:
An ecommerce company anticipates a huge increase in web traffic for two very popular upcoming shopping holidays. Which AWS service or feature can be configured to dynamically adjust resources to meet this change in demand?
A. AWS CloudTrail
B. Amazon EC2 Auto Scaling
C. Amazon Forecast
D. AWS Config
Correct Answer: B
Reference: https://aws.amazon.com/autoscaling/
Question 12:
Which of the following is the customer\’s responsibility when using Amazon RDS?
A. Patching the operating system of underlying hardware
B. Controlling traffic to and from the database through security groups
C. Running backups that enable point-in-time recovery of a DB instance
D. Replacing failed DB instances
Correct Answer: D
Reference: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.html
Question 13:
A company hosts an application on an Amazon EC2 instance. The EC2 instance needs to access several AWS resources, including Amazon S3 and Amazon DynamoDB.
What is the MOST operationally efficient solution to delegate permissions?
A. Create an IAM role with the required permissions. Attach the role to the EC2 instance
B. Create an IAM user and use its access key and secret access key in the application.
C. Create an IAM user and use its access key and secret access key lo create a CLI profile in the EC2 instance.
D. Create an IAM role with the required permissions. Attach the role to the administrative IAM user.
Correct Answer: A
Reference: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2.html
Question 14:
A company is planning to host a large ecommerce application in the AWS Cloud. The company must create an architecture that provides protection against network-based security issues, such as DDoS attacks.
Which AWS services should the company use to meet this requirement? (Choose two.)
A. Amazon Inspector
B. Amazon GuardDuty
C. Amazon CloudFront
D. AWS Shield
E. AWS Identity and Access Management (IAM)
Correct Answer: CD
Question 15:
Which AWS service or feature provides users with recommendations for common billing questions?
A. AWS Marketplace
B. AWS Knowledge Center
C. Amazon Pinpoint
D. Amazon Connect
Correct Answer: B