You are looking to invoke an AWS Lambda function every hour (similar to a cron job) in a serverless way.
Which event source should you use for your AWS Lambda function? CloudWatch Events Amazon S3 SQS Kinesis.
A company has recently launched a new gaming application that the users are adopting rapidly.
The company uses RDS MySQL as the database.
The development team wants an urgent solution to this issue where the rapidly increasing workload might exceed the available database storage.
As a developer associate, which of the following solutions would you recommend so that it requires minimum development effort to address this requirement? Enable storage auto-scaling for RDS MySQL Migrate RDS MySQL to Aurora which offers storage auto-scaling Migrate RDS MySQL database to DynamoDB which automatically allocates storage space when required Create read replica for RDS MySQL.
You have created a test environment in Elastic Beanstalk and as part of that environment, you have created an RDS database.
How can you make sure the database can be explored after the environment is destroyed? Make a snapshot of the database before it gets deleted Make a selective delete in Elastic Beanstalk Change the Elastic Beanstalk environment variables Convert the Elastic Beanstalk environment to a worker environment.
You are working for a small organization that does not have a database administrator and the organization needs to install a database on the cloud quickly to support an accounting application used by thousands of users.
The application will act as a backend and will perform (CRUD) operations such as create, read, update and delete as well as inner joins.
Which database is best suited for this scenario? RDS Dynamodb ElastiCache redshift.
The development team at an e-commerce company is preparing for the upcoming Thanksgiving sale.
The product manager wants the development team to implement appropriate caching strategy on Amazon ElastiCache to withstand traffic spikes on the website during the sale.
A key requirement is to facilitate consistent updates to the product prices and product description, so that the cache never goes out of sync with the backend.
As a Developer Associate, which of the following solutions would you recommend for the given use-case? Use a caching strategy to write to the backend first and then invalidate the cache Use a caching strategy to update the cache and the backend at the same time Use a caching strategy to write to the backend first and wait for the cache to expire via TTL Use a caching strategy to write to the cache directly and sync the backend at a later time.
One of your Kinesis Stream is experiencing increased traffic due to a sale day.
Therefore your Kinesis Administrator has split shards and thus you went from having 6 shards to having 10 shards in your Kinesis Stream.
Your consuming application is running a KCL-based application on EC2 instances.
What is the maximum number of EC2 instances that can be deployed to process the shards? 10 20 1 6.
You are a cloud security engineer working for a popular cyber-forensics company that offers vulnerability scanning solutions to government contractors.
The scanning solutions are integrated with AWS resources to monitor EC2 and S3 API calls which then display results to users on an analytical dashboard.
Which of the following AWS services makes this possible? CloudTrail S3 Access Logs VPC Flow Logs IAM.
A media analytics company has built a streaming application on Lambda using Serverless Application Model (SAM).
As a Developer Associate, which of the following would you identify as the correct order of execution to successfully deploy the application? Develop the SAM template locally => upload the template to S3 => deploy your application to the cloud Develop the SAM template locally => upload the template to Lambda => deploy your application to the cloud Develop the SAM template locally => upload the template to CodeCommit => deploy your application to CodeDeploy Develop the SAM template locally => deploy the template to S3 => use your application in the cloud.
You would like to retrieve a subset of your dataset stored in S3 with the CSV format.
You would like to retrieve a month of data and only 3 columns out of the 10.
You need to minimize compute and network costs for this, what should you use? S3 Select S3 Inventory S3 Analytics S3 Access Logs.
A company ingests real-time data into its on-premises data center and subsequently a daily data feed is compressed into a single file and uploaded on Amazon S3 for backup.
The typical compressed file size is around 2 GB.
Which of the following is the fastest way to upload the daily compressed file into S3? Upload the compressed file using multipart upload with S3 transfer acceleration Upload the compressed file in a single operation Upload the compressed file using multipart upload FTP the compressed file into an EC2 instance that runs in the same region as the S3 bucket. Then transfer the file from the EC2 instance into the S3 bucket.
An EC2 instance has an IAM instance role attached to it, providing it read and write access to the S3 bucket 'my_bucket'.
You have tested the IAM instance role and both reads and writes are working.
You then remove the IAM role from the EC2 instance and test both read and write again.
Writes stopped working but reads are still working.
What is the likely cause of this behavior? The S3 bucket policy authorizes reads The EC2 instance is using cached temporary IAM credentials Removing an instance role from an EC2 instance can take a few minutes before being active When a read is done on a bucket, there's a grace period of 5 minutes to do the same read again.
Your Lambda function must use the Node.js drivers to connect to your RDS PostgreSQL database in your VPC.
How do you bundle your Lambda function to add the dependencies? Put the function and the dependencies in one folder and zip them together Zip the function as-is with a package.json file so that AWS Lambda can resolve the dependencies for you Upload the code through the AWS console and upload the dependencies as a zip Zip the function and the dependencies separately and upload them in AWS Lambda as two parts.
You are running a public DNS service on an EC2 instance where the DNS name is pointing to the IP address of the instance. You wish to upgrade your DNS service but would like to do it without any downtime.
Which of the following options will help you accomplish this? Elastic IP Create a Load Balancer and an auto-scaling group Provide a static private IP Use Route 53.
Your organization has a single Amazon Simple Storage Service (S3) bucket that contains folders labeled with customer names.
Several administrators have IAM access to the S3 bucket and versioning is enabled to easily recover from unintended user actions.
Which of the following statements about versioning is NOT true based on this scenario? Versioning can be enabled only for a specific folder Overwriting a file increases its versions Deleting a file is a recoverable operation Any file that was unversioned before enabling versioning will have the 'null' version.
You've just deployed an AWS Lambda function. The lambda function will be invoked via the API Gateway. The API Gateway will need to control access to it.
Which of the following mechanisms is not supported for API Gateway? STS IAM permissions with sigv4 Lambda Authorizer Cognito User Pools .
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