Amazon AWS Certified Solutions Architect - Associate - SAA-C01 Exam Practice Test

A company uses AWS Elastic Beanstalk to deploy a web application running on c4.large instances. Users are reporting high latency and failed requests. Further investigation reveals that the EC2 instances are running at or near 100% CPU utilization.
What should a Solutions Architect do to address the performance issues?

A company has an Amazon RDS database backing its production website. The Sales team needs to run queries against the database to track training program effectiveness.
Queries against the production database cannot impact performance, and the solution must be easy to maintain.
How can these requirements be met?

A web application has an increase in traffic during certain times of the day, and a Solutions Architect notices that CPU usage reaches 100%, which results in poor application performance.
How should the solutions Architect ensure that adequate compute resources are provisioned at all times?

A company is using Amazon S3 as its local repository for weekly analysis reports. One of the company-wide requirements is to secure data at rest using encryption. The company chose Amazon S3 server-side encryption. The company wants to know how the object is decrypted when a GET request is issued.
Which of the following answers this question?

A Solutions Architect is developing a new web application on AWS. The services must scale to support an increasing load. The Architect wants to focus on software development and deploying new features rather than provisioning or managing servers.
Which AWS service is appropriate?

During performance testing of an application, the Amazon RDS database caused a performance bottleneck.
What steps can be taken to improve the database performance? (Choose two.)

A hotel management application generates logs whenever an electronic room key is used on a door lock, indicating whether the entry request was granted or rejected. After a number of rejected entries exceeds an average of one per minute. The notification should be received within a few minutes of the rate being exceeded.
How should a solutions Architect design a solution to meet this requirement without making any code changes?

A Solutions Architect is designing a ride-sharing application. The application needs consistent and single-digit millisecond latency. In addition, the application must integrate with a highly scalable and fully managed database service to track GPS coordinates and user data for all rides.
Which database service should the Solutions Architect use to meet these performance requirements?

An application runs on EC2 instances behind an Elastic Load Balancing Application Load Balancer. The instances run in an EC2 Auto Scaling group across multiple Availability Zones. The application provides a RESTful interface with both synchronous and asynchronous operations. The asynchronous operations require up to 5 minutes to complete. Although the application must remain available at all times, after business hours, the traffic going to the application is greatly reduced and often results in the Auto Scaling group running the minimum number of On-Demand Instances.
What should the Solutions Architect recommend to optimize the cost of the environment after business hours?

An organization runs an online voting system for a television program. During broadcasts, hundreds of thousands of votes are submitted within minutes and sent to a front-end fleet of auto-scaled Amazon EC2 instances. The EC2 instances push the votes to an RDBMS database. The database is unable to keep up with the front-end connection requests.
What is the MOST efficient and cost-effective way of ensuring that votes are processed in a timely manner?

A company is creating a web application that allows customers to view photos in their web browsers. The website is hosted in us-east-1 on Amazon EC2 instances behind an Application Load Balancer. Users will be located in many places around the world.
Which solution should provide all users with the fastest photo viewing experience?

A legacy build management application stores artifacts in an NFS shared filesystem accessed by 400 servers.
The company is migrating its infrastructure to AWS.
Which storage service should be used for build management?

A Solutions Architect is designing a microservice to process records from Amazon Kinesis Streams. The metadata must be stored in Amazon DynamoDB. The microservice must be capable of concurrently processing 10,000 records daily as they arrive in the Kinesis stream.
The MOST scalable way to design the microservice is: