Solutions Architect Professional (Page 116)

Auto Scaling requests are signed with a _________ signature calculated from the request and the user’s private key.Read More →

You are designing the network infrastructure for an application server in Amazon VPC.Users will access all application instances from the Internet, as well as from an on-premises network.The on-premises network is connected to your VPC over an AWS Direct Connect link.How would you design routing to meet the above requirements?Read More →

Your application is using an ELB in front of an Auto Scaling group of web/application servers deployed across two AZs and a Multi-AZ RDS Instance for data persistence.The database CPU is often above 80% usage and 90% of I/O operations on the database are reads.To improve performance you recently added a single-nodeMemcached ElastiCache Cluster to cache frequent DB query results.In the next weeks the overall workload is expected to grow by 30%.Do you need to change anything in the architecture to maintain the high availability or the application with the anticipated additional load? Why?Read More →

You are implementing AWS Direct Connect.You intend to use AWS public service end points such as Amazon S3, across the AWS Direct Connect link.You want other Internet traffic to use your existing link to an Internet Service Provider.What is the correct way to configure AWS Direct connect for access to services such as Amazon S3?Read More →

A web company is looking to implement an external payment service into their highly available application deployed in a VPC Their application EC2 instances are behind a public facing ELB.Auto scaling is used to add additional instances as traffic increases under normal load the application runs 2 instances in the AutoScaling group but at peak it can scale 3x in size.The application instances need to communicate with the payment service over the Internet which requires whitelisting of all public IP addresses used to communicate with it.A maximum of 4 whitelisting IP addresses are allowed at a time and can be added through anAPI.How should they architect their solution?Read More →

An International company has deployed a multi-tier web application that relies on DynamoDB in a single region.For regulatory reasons they need disaster recovery capability in a separate region with a Recovery Time Objective of 2 hours and a Recovery Point Objective of 24 hours.They should synchronize their data on a regular basis and be able to provision me web application rapidly using CloudFormation.The objective is to minimize changes to the existing web application, control the throughput of DynamoDB used for the synchronization of data and synchronize only the modified elements.Which design would you choose to meet these requirements?Read More →

You are designing an intrusion detection prevention (IDS/IPS) solution for a customer web application in a single VPC.You are considering the options for implementing IOS IPS protection for traffic coming from the Internet.Which of the following options would you consider? (Choose two.)Read More →

Your company is getting ready to do a major public announcement of a social media site on AWS.The website is running on EC2 instances deployed across multiple Availability Zones with a Multi-AZ RDS MySQL Extra Large DB Instance.The site performs a high number of small reads and writes per second and relies on an eventual consistency model.After comprehensive tests you discover that there is read contention on RDS MySQL.Which are the best approaches to meet these requirements? (Choose two.)Read More →

Company B is launching a new game app for mobile devices. Users will log into the game using their existing social media account to streamline data capture.Company B would like to directly save player data and scoring information from the mobile app to a DynamoDS table named Score Data When a user saves their game the progress data will be stored to the Game state S3 bucket.What is the best approach for storing data to DynamoDB and S3?Read More →

An AWS customer runs a public blogging website.The site users upload two million blog entries a month.The average blog entry size is 200 KB.The access rate to blog entries drops to negligible 6 months after publication and users rarely access a blog entry 1 year after publication.Additionally, blog entries have a high update rate during the first 3 months following publication, this drops to no updates after 6 months.The customer wants to use CloudFront to improve his user’s load times.Which of the following recommendations would you make to the customer?Read More →