Question #1
An online gaming company is planning to launch a new game with Amazon DynamoDB as its data store. The database should be designated to support the following use cases:
Update scores in real time whenever a player is playing the game.
Retrieve a player’s score details for a specific game session.
A Database Specialist decides to implement a DynamoDB table. Each player has a unique user_id and each game has a unique game_id. Which choice of keys is recommended for the DynamoDB table?
A. Create a global secondary index with game_id as the partition key
B. Create a global secondary index with user_id as the partition key
C. Create a composite primary key with game_id as the partition key and user_id as the sort key
D. Create a composite primary key with user_id as the partition key and game_id as the sort key
Answer: B
Question #2
A Database Specialist is creating Amazon DynamoDB tables, Amazon CloudWatch alarms, and associated infrastructure for an Application team using a development AWS account. The team wants a deployment method that will standardize the core solution components while managing environment-specific settings separately, and wants to minimize rework due to configuration errors. Which process should the Database Specialist recommend to meet these requirements?
A. Organize common and environmental-specific parameters hierarchically in the AWS Systems ManagerParameter Store, then reference the parameters dynamically from an AWS CloudFormation template.Deploy the CloudFormation stack using the environment name as a parameter.
B. Create a parameterized AWS CloudFormation template that builds the required objects. Keep separateenvironment parameter files in separate Amazon S3 buckets. Provide an AWS CLI command that deploysthe CloudFormation stack directly referencing the appropriate parameter bucket.
C. Create a parameterized AWS CloudFormation template that builds the required objects. Import thetemplate into the CloudFormation interface in the AWS Management Console. Make the required changesto the parameters and deploy the CloudFormation stack.
D. Create an AWS Lambda function that builds the required objects using an AWS SDK. Set the requiredparameter values in a test event in the Lambda console for each environment that the Application team canmodify, as needed. Deploy the infrastructure by triggering the test event in the console.
Answer: C
Question #3
A company is using Amazon with Aurora Replicas for read-only workload scaling. A Database Specialist needs to split up two read-only applications so each application always connects to a dedicated replica. The Database Specialist wants to implement load balancing and high availability for the read-only applications. Which solution meets these requirements?
A. Use a specific instance endpoint for each replica and add the instance endpoint to each read-onlyapplication connection string.
B. Use reader endpoints for both the read-only workload applications.
C. Use a reader endpoint for one read-only application and use an instance endpoint for the other read-onlyapplication.
D. Use custom endpoints for the two read-only applications.
Answer: B
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