Free AWS-CERTIFIED-SOLUTIONS-ARCHITECT-ASSOCIATE-SAA-C03 – Amazon AWS-CERTIFIED-SOLUTIONS-ARCHITECT-ASSOCIATE-SAA-C03 Practice Test Question

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Showing 28–30 of 102 questions

Question 28 (Topic 1)

A company uses an Amazon EC2 instance to run a script to poll for and process messages in an Amazon Simple Queue Service (Amazon SQS) queue. The company wants to reduce operational costs while maintaining its ability to process a growing number of messages that are added to the queue. What should a solutions architect recommend to meet these requirements?

Select an option, then click Submit answer.

○ Increase the size of the EC2 instance to process messages faster.
○ Use Amazon EventBridge to turn off the EC2 instance when the instance is underutilized.
○ Migrate the script on the EC2 instance to an AWS Lambda function with the appropriate runtime.
○ Use AWS Systems Manager Run Command to run the script on demand.

Reference / correct answer:

Migrate the script on the EC2 instance to an AWS Lambda function with the appropriate runtime.

Most accepted answer: C. Migrate the script on the EC2 instance to an AWS Lambda function with the appropriate runtime.

Community votes: C=6, D=1

Selected Answer: C By migrating the script to AWS Lambda, the company can take advantage of the auto-scaling feature of the service. AWS Lambda will automatically scale resources to match the size of the workload. This means that the company will not have to worry about provisioning or managing instances as the number of messages increases, resulting in lower operational costs upvoted 13 times

Selected Answer: C The key points are: Currently using an EC2 instance to poll SQS and process messages Want to reduce costs while handling growing message volume By migrating the polling script to a Lambda function, the company can avoid the cost of running a dedicated EC2 instance. Lambda functions scale automatically to handle message spikes. And Lambda billing is based on actual usage, resulting in cost savings versus provisioned EC2 capacity. upvoted 8 times

Selected Answer: C reduce operational costs = serverless = Lambda functions upvoted 2 times

Selected Answer: C Lambda costs money only when it's processing, not when idle upvoted 3 times

Agree with C upvoted 1 times

Question 29 (Topic 1)

A company’s facility has badge readers at every entrance throughout the building. When badges are scanned, the readers send a message over HTTPS to indicate who attempted to access that particular entrance. A solutions architect must design a system to process these messages from the sensors. The solution must be highly available, and the results must be made available for the company’s security team to analyze. Which system architecture should the solutions architect recommend?

Select an option, then click Submit answer.

○ Launch an Amazon EC2 instance to serve as the HTTPS endpoint and to process the messages. Configure the EC2 instance to save the results to an Amazon S3 bucket.
○ Create an HTTPS endpoint in Amazon API Gateway. Configure the API Gateway endpoint to invoke an AWS Lambda function to process the messages and save the results to an Amazon DynamoDB table.
○ Use Amazon Route 53 to direct incoming sensor messages to an AWS Lambda function. Configure the Lambda function to process the messages and save the results to an Amazon DynamoDB table.
○ Create a gateway VPC endpoint for Amazon S3. Configure a Site-to-Site VPN connection from the facility network to the VPC so that sensor data can be written directly to an S3 bucket by way of the VPC endpoint.

Reference / correct answer:

Create an HTTPS endpoint in Amazon API Gateway. Configure the API Gateway endpoint to invoke an AWS Lambda function to process the messages and save the results to an Amazon DynamoDB table.

Most accepted answer: B. Create an HTTPS endpoint in Amazon API Gateway. Configure the API Gateway endpoint to invoke an AWS Lambda function to process the messages and save the results to an Amazon DynamoDB table.

Community votes: B=6

Selected Answer: B - Option A would not provide high availability. A single EC2 instance is a single point of failure. - Option B provides a scalable, highly available solution using serverless services. API Gateway and Lambda can scale automatically, and DynamoDB provides a durable data store. - Option C would expose the Lambda function directly to the public Internet, which is not a recommended architecture. API Gateway provides an abstraction layer and additional features like access control. - Option D requires configuring a VPN to AWS which adds complexity. It also saves the raw sensor data to S3, rather than processing it and storing the results. upvoted 22 times

Selected Answer: B Highly available = Serverless The readers send a message over HTTPS = HTTPS endpoint in Amazon API Gateway Process these messages from the sensors = AWS Lambda function upvoted 8 times

Selected Answer: B The correct answer is B. Create an HTTPS endpoint in Amazon API Gateway. Configure the API Gateway endpoint to invoke an AWS Lambda function to process the messages and save the results to an Amazon DynamoDB table. Here are the reasons why: API Gateway is a highly scalable and available service that can be used to create and expose RESTful APIs. Lambda is a serverless compute service that can be used to process events and data. DynamoDB is a NoSQL database that can be used to store data in a scalable and highly available way. upvoted 4 times

Selected Answer: B I vote B upvoted 2 times

It is option "B" Option "B" can provide a system with highly scalable, fault-tolerant, and easy to manage. upvoted 2 times

Question 30 (Topic 1)

A company wants to implement a disaster recovery plan for its primary on-premises file storage volume. The file storage volume is mounted from an Internet Small Computer Systems Interface (iSCSI) device on a local storage server. The file storage volume holds hundreds of terabytes (TB) of data. The company wants to ensure that end users retain immediate access to all file types from the on-premises systems without experiencing latency. Which solution will meet these requirements with the LEAST amount of change to the company's existing infrastructure?

Select an option, then click Submit answer.

○ Provision an Amazon S3 File Gateway as a virtual machine (VM) that is hosted on premises. Set the local cache to 10 TB. Modify existing applications to access the files through the NFS protocol. To recover from a disaster, provision an Amazon EC2 instance and mount the S3 bucket that contains the files.
○ Provision an AWS Storage Gateway tape gateway. Use a data backup solution to back up all existing data to a virtual tape library. Configure the data backup solution to run nightly after the initial backup is complete. To recover from a disaster, provision an Amazon EC2 instance and restore the data to an Amazon Elastic Block Store (Amazon EBS) volume from the volumes in the virtual tape library.
○ Provision an AWS Storage Gateway Volume Gateway cached volume. Set the local cache to 10 TB. Mount the Volume Gateway cached volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume. To recover from a disaster, restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance.
○ Provision an AWS Storage Gateway Volume Gateway stored volume with the same amount of disk space as the existing file storage volume. Mount the Volume Gateway stored volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume. To recover from a disaster, restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance.

Reference / correct answer:

Provision an AWS Storage Gateway Volume Gateway stored volume with the same amount of disk space as the existing file storage volume. Mount the Volume Gateway stored volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume. To recover from a disaster, restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance.

Most accepted answer: D. Provision an AWS Storage Gateway Volume Gateway stored volume with the same amount of disk space as the existing file storage volume. Mount the Volume Gateway stored volume to the existing file server by using iSCSI, and copy all files to the storage volume. Configure scheduled snapshots of the storage volume. To recover from a disaster, restore a snapshot to an Amazon Elastic Block Store (Amazon EBS) volume and attach the EBS volume to an Amazon EC2 instance.

Community votes: C=2, D=11

D is the correct answer Volume Gateway CACHED Vs STORED Cached = stores a subset of frequently accessed data locally Stored = Retains the ENTIRE ("all file types") in on prem data centre upvoted 30 times

Selected Answer: D "users retain immediate access to all file types" immediate cannot be cached -> D upvoted 6 times

Bad question. No RTO/RPO, so impossible to properly answer. They probably want to hear option D. Depending on RPO, option B is also an adequate solution (data remains immediately accessible without experiencing latency via existing infrastructure, backup to cloud for DR). Also, this option requires LESS changes to existing infra than A. Only argument against B is that VTLs are usually used for legacy DR solutions, not for new ones, where object storage such as S3 is usually supported natively. upvoted 2 times

Answer is C go argue somewhere. upvoted 2 times

Selected Answer: D A,B are wrong types of gateways for hundreds of TB of data that needs immediate access on-prem. C limits to 10TB. D provides access to all the files. upvoted 2 times

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