1. A Developer must build an application that uses Amazon DynamoDB. The requirements state that items being stored in the DynamoDB table will be 7KB in size and that reads must be strongly consistent. The maximum read rate is 3 items per second, and the maximum write rate is 10 items per second. How should the Developer size the DynamoDB table to meet these requirements?

A) Read: 3 read capacity units Write: 10 write capacity units
B) Read: 3 read capacity units Write: 70 write capacity units
C) Read: 6 read capacity units Write: 10 write capacity units
D) Read: 6 read capacity units Write: 70 write capacity units



2. A Developer is creating a mobile application with a limited budget. The solution requires a scalable service that will enable customers to sign up and authenticate into the mobile application while using the organization's current SAML 2.0 identity provider. Which AWS service should be used to meet these requirements?

A) Amazon EC2
B) AWS Lambda
C) AWS IAM
D) Amazon Cognito



3. An application uses Amazon Kinesis Data Streams to ingest and process large streams of data records in real time. Amazon EC2 instances consume and process the data from the shards of the Kinesis data stream by using Amazon Kinesis Client Library (KCL). The application handles the failure scenarios and does not require standby workers. The application reports that a specific shard is receiving more data than expected. To adapt to the changes in the rate of data flow, the 'hot shard is resharded. Assuming that the initial number of shards in the Kinesis data stream is 4, and after resharding the number of shards increased to 6, what is the maximum number of EC2 instances that can be deployed to process data from all the shards?

A) 4
B) 6
C) 1
D) 12



4. A company needs to distribute firmware updates to its customers around the world. Which service will allow easy and secure control of the access to the downloads at the lowest cost?

A) Create a dedicated Amazon CloudFront Distribution for each customer
B) Use Amazon API Gateway and AWS Lambda to control access to an S3 bucket
C) Use Amazon CloudFront with AWS Lambda@Edge
D) Use Amazon CloudFront with signed URLs for Amazon S3



5. A company is migrating its on-premises database to Amazon RDS for MySQL. The company has read-heavy workloads, and wants to make sure it re-factors its code to achieve optimum read performance for its queries. How can this objective be met?

A) Add a connection string to use an RDS read replica for read queries
B) Use RDS with multi-AZ deployment
C) Add a connection string to use a read replica on an EC2 instance.
D) Add database retries to effectively use RDS with vertical scaling