A company maintains a REST service using Amazon API Gateway and the API Gateway native API key validation. The company recently launched a new registration page, which allows users to sign up for the service. The registration page creates a new API key using CreateApiKey and sends the new key to the user.
When the user attempts to call the API using this key, the user receives a 403 Forbidden error. Existing users are unaffected and can still call the API.
What code updates will grant these new users access to the API?

• A.The createDeployment method must be called so the API can be redeployed to include the newly created API key.
• B.The updateAuthorizer method must be called to update the API's authorizer to include the newly created API key.
• C.The importApiKeys method must be called to import all newly created API keys into the current stage of the API.
• D.The createUsagePlanKey method must be called to associate the newly created API key with the correct usage plan.

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A root account owner is trying to setup an additional level of security for all his IAM users. Which of the below mentioned options is a recommended solution for the account owner?

• A.Enable access key and secret access key for all the IAM users
• B.Enable MFA for all IAM users
• C.Enable the password for all the IAM users
• D.Enable MFA for the root account

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A Database Specialist is setting up a new Amazon Aurora DB cluster with one primary instance and three Aurora Replicas for a highly intensive, business-critical application. The Aurora DB cluster has one medium- sized primary instance, one large-sized replica, and two medium sized replicas. The Database Specialist did not assign a promotion tier to the replicas.
In the event of a primary failure, what will occur?

• A.Aurora will promote an Aurora Replica that is of the same size as the primary instance
• B.Aurora will promote an arbitrary Aurora Replica
• C.Aurora will promote the largest-sized Aurora Replica
• D.Aurora will not promote an Aurora Replica

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A developer is writing an AWS Lambda function. The developer wants to log key events that occur during the Lambda function and include a unique identifier to associate the events with a specific function invocation.
Which of the following will help the developer accomplish this objective?

• A.Obtain the request identifier from the Lambda event object. Architect the application to write logs to the console.
• B.Obtain the request identifier from the Lambda context object. Architect the application to write logs to the console.
• C.Obtain the request identifier from the Lambda context object. Architect the application to write logs to a file.
• D.Obtain the request identifier from the Lambda event object. Architect the application to write logs to a file.

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An application has hundreds of users. Each user may use multiple devices to access the application. The Developer wants to assign unique identifiers to these users regardless of the device they use.
Which of the following methods should be used to obtain unique identifiers?

• A.Create a user table in Amazon DynamoDB as key-value pairs of users and their devices. Use these keys as unique identifiers.
• B.Use IAM-generated access key IDs for the users as the unique identifier, but do not store secret keys.
• C.Implement developer-authenticated identities by using Amazon Cognito, and get credentials for these identities.
• D.Assign IAM users and roles to the users. Use the unique IAM resource ID as the unique identifier.

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