SAA-C02 Online Practice Questions and Answers
A company has an ecommerce checkout workflow that writes an order to a database and calls a service to process the payment. Users are experiencing timeouts during the checkout process. When users resubmit the checkout form, multiple unique orders are created for the same desired transaction.
How should a solutions architect refactor this workflow to prevent the creation of multiple orders?
A. Configure the web application to send an order message to Amazon Kinesis Data Firehose. Set the payment service to retrieve the message from Kinesis Data Firehose and process the order.
B. Create a rule in AWS CloudTrail to invoke an AWS Lambda function based on the logged application path request Use Lambda to query the database, call the payment service, and pass in the order information.
C. Store the order in the database. Send a message that includes the order number to Amazon Simple Notification Service (Amazon SNS). Set the payment service to poll Amazon SNS. retrieve the message, and process the order.
D. Store the order in the database. Send a message that includes the order number to an Amazon Simple Queue Service (Amazon SQS) FIFO queue. Set the payment service to retrieve the message and process the order. Delete the message from the queue.
A company is running a mission-critical application on Amazon EC2 instances henna an Application Load Balancer The instances run in an Auto Scaling group in a single AWS Region The application is using a database in Ama2on Aurora as the data tier. A recent audit revealed that the current deployment of Aurora is not highly available.
What should a solutions architect do to improve the availability of the database?
A. Configure an Aurora Replica
B. Configure storage replication.
C. Configure storage auto scaling.
D. Configure cross-Region replication
A company has deployed a business-critical application in the AWS Good The application uses Amazon EC2 instances that run in the us-east-1 Region The application uses Amazon S3 for storage of all critical data
To meet compliance requirements the company must create a disaster recovery (DR) plan that provides the capability of a full failover to another AWS Region
What should a solutions architect recommend for this DR plan?
A. Deploy the application to multiple Availability Zones in us-east-1 Create a resource group in AWS Resource Groups Turn on automatic failover for the application to use a predefined recovery Region
B. Perform a virtual machine (VM) export by using AWS Import/Export on the existing EC2 instances Copy the exported instances to the destination Region in the event of a disaster provision new EC2 instances from the exported EC2 instances
C. Create snapshots of all Amazon Elastic Block Store (Amazon EBS) volumes that are attached to the EC2 instances in us-east-t Copy the snapshots to the destination Region In the event of a disaster provision new EC2 instances from the EBS snapshots
D. Use S3 Cross-Region Replication for the data that is stored in Amazon S3 Create an AWS CloudFormation template for the application with an S3 bucket parameter In the event of a disaster deploy the template to the destination Region and specify the local S3 bucket as the parameter
A group requires permissions to list an Amazon S3 bucket and delete objects from that bucket. An administrator has created the following IAM policy to provide access to the bucket and applied that policy to the group. The group is not able to delete objects in the bucket. The company follows least-privilege access rules.
Which statement should a solutions architect add to the policy to correct bucket access?
A. Option A
B. Option B
C. Option C
D. Option D
A company is developing a video conversion application hosted on AWS. The application will be available in two tiers: a free tier and a paid tier. Users in the paid tier will have their videos converted first and then the tree tier users will have their videos converted.
Which solution meets these requirements and is MOST cost-effective?
A. One FIFO queue for the paid tier and one standard queue for the free tier
B. A single FIFO Amazon Simple Queue Service (Amazon SQS) queue for all file types
C. A single standard Amazon Simple Queue Service (Amazon SQS) queue for all file types
D. Two standard Amazon Simple Queue Service (Amazon SQS) queues with one for the paid tier and one for the free tier
A company's website hosted on Amazon EC2 instances processes classified data stored in Amazon S3 Due to security concerns, the company requires a private and secure connection between its EC2 resources and Amazon S3 Which solution meets these requirements?
A. Set up S3 bucket policies to allow access from a VPC endpoint.
B. Set up an IAM policy to grant read-write access to the S3 bucket.
C. Set up a NAT gateway to access resources outside the private subnet.
D. Set up an access key ID and a secret access key to access the S3 bucket
A company maintains about 300 TB m Amazon S3 Standard storage month after month. The S3 objects are each typically around 50 GB m size and are frequently replaced with multipart uploads by their global application. The number and size of S3 objects remain constant but the company's S3 storage costs are increasing each month.
How should a solutions architect reduce costs in this situation?
A. Switch from multipart uploads to Amazon S3 Transfer Acceleration
B. Enable an S3 Lifecycle policy that deletes incomplete multipart uploads
C. Configure S3 inventory to prevent objects from being archived too quickly
D. Configure Amazon CloudFront to reduce the number of objects stored in Amazon S3
A company is building a media-sharing application and decides to use Amazon S3 for storage. When a media file is uploaded the company starts a multi-step process to create thumbnails, identify objects in the images, transcode videos into standard formats and resolutions and extract and store the metadata to an Amazon DynamoDB table. The metadata is used for searching and navigation.
The amount of traffic is variable The solution must be able to scale to handle spikes in load without unnecessary expenses.
What should a solutions architect recommend to support this workload?
A. Build the processing into the website or mobile app used to upload the content to Amazon S3 Save the required data to the DynamoDB table when the objects are uploaded
B. Trigger AWS Step Functions when an object is stored in the S3 bucket Have the Step Functions perform the steps needed to process the object and then write the metadata to the DynamoDB table
C. Trigger an AWS Lambda function when an object is stored in the S3 bucket Have the Lambda function start AWS Batch to perform the steps to process the object Place the object data in the DynamoDB table when complete
D. Trigger an AWS Lambda function to store an initial entry in the DynamoDB table when an object is uploaded to Amazon S3. Use a program running on an Amazon EC2 instance in an Auto Scaling group to poll the index for unprocess use the program to perform the processing
A media company stores video content in an Amazon Elastic Block Store (Amazon EBS) volume. A certain video file has become popular and a large number of users across the world are accessing this content. This has resulted in a cost
increase.
Which action will DECREASE cost without compromising user accessibility?
A. Change the EBS volume to Provisioned IOPS (PIOPS).
B. Store the video in an Amazon S3 bucket and create an Amazon CloudFront distribution.
C. Split the video into multiple, smaller segments so users are routed to the requested video segments only.
D. Clear an Amazon S3 bucket in each Region and upload the videos so users are routed to the nearest S3 bucket.
A company's website is using an Amazon RDS MySQL Multi-AZ DB instance for its transactional data storage.
There are other internal systems that query this DB instance to fetch data for internal batch processing. The RDS DB instance slows down significantly the internal systems fetch data
This impacts the website's read and write performance, and the users experience slow response times.
Which solution will improve the website's performance?
A. Use an RDS PostgreSQL DB instance instead of a MySQL database.
B. Use Amazon ElastiCache to cache the query responses for the website.
C. Add an additional Availability Zone to the current RDS MySQL Multi.AZ DB instance.
D. Add a read replica to the RDS DB instance and configure the internal systems to query the read replica.