Amazon SAA-C01 Online Practice Questions and Exam Preparation

Amazon SAA-C01 Online Questions & Answers

• Question 241:

  A Solutions Architect is designing the architecture for a new three-tier web-based e-commerce site that must be available 24/7. Requests are expected to range from 100 to 10,000 each minute. Usage can vary depending on time of day, holidays, and promotions. The design should be able to handle these volumes, with the ability to handle higher volumes if necessary. How should the Architect design the architecture to ensure the web tier is cost-optimized and can handle the expected traffic? (Select two.)

  A. Launch Amazon EC2 instances in an Auto Scaling group behind an ELB.
  B. Store all static files in a multi-AZ Amazon Aurora database.
  C. Create an CloudFront distribution pointing to static content in Amazon S3.
  D. Use Amazon Route 53 to route traffic to the correct region.
  E. Use Amazon S3 multi-part uploads to improve upload times.
  A. Launch Amazon EC2 instances in an Auto Scaling group behind an ELB.
  C. Create an CloudFront distribution pointing to static content in Amazon S3.

• Question 242:

  What does a "Domain" refer to in Amazon SWF?

  A. A security group in which only tasks inside can communicate with each other
  B. A special type of worker
  C. A collection of related Workflows
  D. The DNS record for the Amazon SWF service
  C. A collection of related Workflows

• Question 243:

  An e-commerce application places orders in an Amazon SQS queue. When a message is received, Amazon EC2 worker instances process the request. The EC2 instances are in an Auto Scaling group. How should the architecture be designed to scale up and down with the LEAST amount of operational overhead?

  A. Use an Amazon CloudWatch alarm on the EC2 CPU to scale the Auto Scaling group up and down.
  B. Use an EC2 Auto Scaling health check for messages processed on the EC2 instances to scale up and down.
  C. Use an Amazon CloudWatch alarm based on the number of visible messages to scale the Auto Scaling group up or down.
  D. Use an Amazon CloudWatch alarm based on the CPU to scale the Auto Scaling group up or down.
  B. Use an EC2 Auto Scaling health check for messages processed on the EC2 instances to scale up and down.

• Question 244:

  You require the ability to analyze a large amount of data, which is stored on Amazon S3 using Amazon Elastic Map Reduce. You are using the cc2 8x large Instance type, whose CPUs are mostly idle during processing. Which of the below would be the most cost efficient way to reduce the runtime of the job?

  A. Create smaller files on Amazon S3.
  B. Add additional cc2 8x large instances by introducing a task group.
  C. Use smaller instances that have higher aggregate I/O performance.
  D. Create fewer, larger files on Amazon S3.
  C. Use smaller instances that have higher aggregate I/O performance.

• Question 245:

  A Solutions Architect is building an online shopping application where users will be able to browse items, add items to a cart, and purchase the items. Images of items will be stored in Amazon S3 buckets organized by item category. When an

  item is no longer available for purchase, the item image will be deleted from the S3 bucket.

  Occasionally, during testing, item images deleted from the S3 bucket are still visible to some users.

  What is a flaw in this design approach?

  A. Defining S3 buckets by item may cause partition distribution errors, which will impact performance.
  B. Amazon S3 DELETE requests are eventually consistent, which may cause other users to view items that have already been purchased
  C. Amazon S3 DELETE requests apply a lock to the S3 bucket during the operation, causing other users to be blocked
  D. Using Amazon S3 for persistence exposes the application to a single point of failure
  B. Amazon S3 DELETE requests are eventually consistent, which may cause other users to view items that have already been purchased

• Question 246:

  You would like to create a mirror image of your production environment in another region for disaster recovery purposes. Which of the following AWS resources do not need to be recreated in the second region? (Choose two.)

  A. Route 53 Record Sets
  B. IM1 Roles
  C. Elastic IP Addresses (EIP)
  D. EC2 Key Pairs
  E. Launch configurations
  F. Security Groups
  A. Route 53 Record Sets
  B. IM1 Roles

• Question 247:

  A retail company has sensors placed in its physical retail stores. The sensors send messages over HTTP when customers interact with in-store product displays. A Solutions Architect needs to implement a system for processing those sensor messages; the results must be available for the Data Analysis team.

  Which architecture should be used to meet these requirements?

  A. Implement an Amazon API Gateway to server as the HTTP endpoint. Have the API Gateway trigger an AWS Lambda function to process the messages, and save the results to an Amazon DynamoDB table.
  B. Create an Amazon EC2 instance to server as the HTTP endpoint and to process the messages. Save the results to Amazon S3 for the Data Analysis team to download.
  C. Use Amazon Route 53 to direct incoming sensor messages to a Lambda function to process the message and save the results to a Amazon DynamoDB table.
  D. Use AWS Direct Connect to connect sensors to DynamoDB so that data can be written directly to a DynamoDB table where it can be accessed by the Data Analysis team.
  A. Implement an Amazon API Gateway to server as the HTTP endpoint. Have the API Gateway trigger an AWS Lambda function to process the messages, and save the results to an Amazon DynamoDB table.

• Question 248:

  A Solutions Architect is architecting a workload that requires a performant object-based storage system that must be shared with multiple Amazon EC2 instances. Which AWS service meets this requirement?

  A. Amazon EFS
  B. Amazon S3
  C. Amazon EBS
  D. Amazon ElastiCache
  B. Amazon S3

• Question 249:

  An application provides a feature that allows users to securely download private and personal files. The web server is currently overwhelmed with serving files for download. A Solutions Architect must find a more effective solution to reduce web server load and costs, and must allow users to download only their own files.

  Which solution meets all requirements?

  A. Store the files securely on Amazon S3 and have the application generate an Amazon S3 pre-signed URL for the user to download.
  B. Store the files in an encrypted Amazon EBS volume, and use a separate set of servers to serve the downloads.
  C. Have the application encrypt the files and store them in the local Amazon EC2 Instance Store prior to serving them up for download.
  D. Create an Amazon CloudFront distribution to distribute and cache the files.
  A. Store the files securely on Amazon S3 and have the application generate an Amazon S3 pre-signed URL for the user to download.

• Question 250:

  Amazon EC2 provides virtual computing environments known as _____.

  A. instances
  B. volumes
  C. microsystems
  D. servers
  A. instances