Practice Question Walkthrough for the AWS Certified Developer Associate (1/5)

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This is the first part of a series of short videos where I walk you through a couple of practice exam questions for the AWS Developer Associate and share my thought process on how to work out which answer is correct or incorrect.

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📌 Timestamps
0:00 - Introduction
0:41 - Question 1: Securing RDS Connection Strings
3:59 - Question 2: User Authentication for Web App

Question No. 1:
An Application will use AWS Lambda and an Amazon RDS database. The Developer needs to secure the database connection string and enable automatic rotation every 30 days. What is the SIMPLEST way to achieve this requirement?

1. Store a SecureString in Systems Manager Parameter Store and enable automatic rotation every 30 days
2. Store the connection string as an encrypted environment variable in Lambda and create a separate function that rotates the connection string every 30 days
3. Store a secret in AWS Secrets Manager and enable automatic rotation every 30 days
4. Store the connection string in an encrypted Amazon S3 bucket and use a scheduled CloudWatch Event to update the connection string every 30 days

Question No 2:
A developer is designing a web application that will be used by thousands of users. The users will sign up using their email addresses and the application will store attributes for each user.
Which service should the developer use to enable users to sign-up for the web application?
1. Amazon Cognito Sync
2. Amazon Cognito user pool
3. AWS Inspector
4. AWS AppSync

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