Amazon SAP-C01 Practice Test - Questions Answers, Page 79
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You are implementing a URL whitelisting system for a company that wants to restrict outbound HTTP'S connections tospecific domains from their EC2-hosted applications. You deploy a single EC2 instance running proxy software andconfigure It to accept traffic from all subnets and EC2 instances in the VPC. You configure the proxy to only pass throughtraffic to domains that you define in its whitelist configuration. You have a nightly maintenance window or 10 minutes whereall instances fetch new software updates. Each update Is about 200MB In size and there are 500 instances In the VPC thatroutinely fetch updates. After a few days you notice that some machines are failing to successfully download some, but notall of their updates within the maintenance window. The download URLs used for these updates are correctly listed in theproxy's whitelist configuration and you are able to access them manually using a web browser on the instances.
What might be happening? (Choose two.)
A large company with hundreds of AWS accounts has a newly established centralized internal process for purchasing new or modifying existing Reserved Instances. This process requires all business units that want to purchase or modify Reserved Instances to submit requests to a dedicated team for procurement or execution. Previously, business units would directly purchase or modify Reserved Instances in their own respective AWS accounts autonomously. Which combination of steps should be taken to proactively enforce the new process in the MOST secure way possible? (Choose two.)
A company wants to replace its call center system with a solution built using AWS managed services. The company call center would like the solution to receive calls, create contact flows, and scale to handle growth projections. The call center would also like the solution to use deep learning capabilities to recognize the intent of the callers and handle basic tasks, reducing the need to speak to an agent. The solution should also be able to query business applications and provide relevant information back to callers as requested. Which services should the Solutions Architect use to build this solution? (Choose three.)
How many cg1.4xlarge on-demand instances can a user run in one region without taking any limit increase approval from AWS?
A company plans to refactor a monolithic application into a modern application design deployed on AWS. The CI/CD pipeline needs to be upgraded to support the modern design for the application with the following requirements:
It should allow changes to be released several times every hour. It should be able to roll back the changes as quickly as possible. Which design will meet these requirements?
A company is running a custom database in the AWS Cloud. The database uses Amazon EC2 for compute and uses Amazon Elastic Block Store (Amazon EBS) for storage. The database runs on the latest generation of EC2 instances and uses a General Purpose SSD (gp2) EBS volume for data.
The current data volume has the following characteristics:
The volume is 512 GB in size.
The volume never goes above 256 GB utilization.
The volume consistently uses around 1,500 IOPS.
A solutions architect needs to conduct an analysis of the current database storage layer and make a recommendation about ways to reduce cost. Which solution will provide the MOST cost savings without impacting the performance of the database?
A company has a web application that uses Amazon API Gateway, AWS Lambda, and Amazon DynamoDB. A recent marketing campaign has increased demand. Monitoring software reports that many requests have significantly longer response times than before the marketing campaign.
A solutions architect enabled Amazon CloudWatch Logs for API Gateway and noticed that errors are occurring on 20% of the requests. In CloudWatch, the Lambda function Throttles metric represents 1% of the requests and the Errors metric represents 10% of the requests. Application logs indicate that, when errors occur, there is a call to DynamoDB. What change should the solutions architect make to improve the current response times as the web application becomes more popular?
You have a website which requires international presence and consequently you have set it up as follows. It is hosted on 30 EC2 instances.
It is on in 15 regions around the globe. Each region has 2 instances. All the instances are a public hosted zone. Which of the following is the best way to configure your site to maintain availability with minimum downtime if one of the 15 regions was to lose network connectivity for an extended period? (Choose two.)
A company that is new to AWS reports it has exhausted its service limits across several accounts that are on the Basic Support plan. The company would like to prevent this from happening in the future. What is the MOST efficient way of monitoring and managing all service limits in the company’s accounts?
A company is building a software-as-a-service (SaaS) solution on AWS. The company has deployed an Amazon API Gateway REST API with AWS Lambda integration in multiple AWS Regions and in the same production account. The company offers tiered pricing that gives customers the ability to pay for the capacity to make a certain number of API calls per second. The premium tier offers up to 3,000 calls per second, and customers are identified by a unique API key.
Several premium tier customers in various Regions report that they receive error responses of 429 Too Many Requests from multiple API methods during peak usage hours. Logs indicate that the Lambda function is never invoked. What could be the cause of the error messages for these customers?
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