Instant Access Amazon.SAA-C02.v2024-03-18.q580 Actual Practice Test Engine for Free (Page 6)

Question 21

A company is developing a data lake solution in Amazon S3 to analyze large scale datasets. The solution makes infrequent SOL queries only in addition, the company wants to minimize infrastructure costs Which AWS service should be used to meet these requirements?

A.Amazon Athena
B.Amazon Redshift Spectrum
C.Amazon RDS for PostgreSQL
D.Amazon Aurora

Question 22

A company runs an online media site, hosted on-premises. An employee posted a product review that contained videos and pictures. The review went viral and the company needs to handle the resulting spike in website traffic.
What action would provide an immediate solution? 252

A.Redesign the website to use Amazon API Gateway, and use AWS Lambda to deliver content
B.Add server instances using Amazon EC2 and use Amazon Route 53 with a failover routing policy
C.Serve the images and videos using an Amazon CloudFront distribution created using the news site as the origin
D.Use Amazon ElasbCache for Redis for caching and reducing the load requests from the origin

Question 23

An ecommerce application places orders in an Amazon Simple Queue Service (Amazon SQS) queue When a message is received, the Amazon EC2 worker instances process the request The EC2 instancesare in an Auto Scaling group 236 How should the architecture be designed to scale the auto scaling group with the LEAST amount of operational overhead?

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

Question 24

A company observes an increase in Amazon EC2 costs in its most recent bill The billing team notices unwanted vertical scaling of instance types for a couple of EC2 instances A solutions architect needs to create a graph comparing the last 2 months of EC2 costs and perform an in-depth analysis to identify the root cause of the vertical scaling How should the solutions architect generate the information with the LEAST operational overhead?

A.Use Cost Explorer's granular filtering feature to perform an in-depth analysis of EC2 costs based on instance types
B.Use AWS Budgets to create a budget report and compare EC2 costs based on instance types
C.Use graphs from the AWS Billing and Cost Management dashboard to compare EC2 costs based on instance types for the last 2 months
D.Use AWS Cost and Usage Reports to create a report and send it to an Amazon S3 bucket Use Amazon QuickSight with Amazon S3 as a source to generate an interactive graph based on instance types.

Question 25

A solutions architect is designing a solution where users will De directed to a backup static error page it the primary website is unavailable The primary website's DNS records are hosted in Amazon Route 53 where their domain is pointing to an Application Load Balancer (ALB) Which configuration should the solutions architect use to meet the company's needs while minimizing changes and infrastructure overhead?

A.Point a Route 53 alias record to an Amazon CloudFront distribution with the ALB as one of its origins Then, create custom error pages for the distribution
B.Set up a Route 53 active-passive failover configuration Direct traffic to a static error page hosted within an Amazon S3 bucket when Route 53 health checks determine that the ALB endpoint is unhealthy
C.Update the Route 53 record to use a latency-based routing policy Add the backup static error page hosted within an Amazon S3 bucket to the record so the traffic is sent to the most responsive endpoints
D.Set up a Route 53 active-active configuration with the ALB and an Amazon EC2 instance hosting a static error page as endpoints Route 53 will only send requests to the instance if the health checks fail for the ALB

Correct Answer: A

Active-passive failover
Use an active-passive failover configuration when you want a primary resource or group of resources to be available the majority of the time and you want a secondary resource or group of resources to be on standby in case all the primary resources become unavailable. When responding to queries, Route 53 includes only the healthy primary resources. If all the primary resources are unhealthy, Route 53 begins to include only the healthy secondary resources in response to DNS queries.
To create an active-passive failover configuration with one primary record and one secondary record, you just create the records and specify Failover for the routing policy. When the primary resource is healthy, Route 53 responds to DNS queries using the primary record. When the primary resource is unhealthy, Route 53 responds to DNS queries using the secondary record.
How Amazon Route 53 averts cascading failures
As a first defense against cascading failures, each request routing algorithm (such as weighted and failover) has a mode of last resort. In this special mode, when all records are considered unhealthy, the Route 53 algorithm reverts to considering all records healthy.
For example, if all instances of an application, on several hosts, are rejecting health check requests, Route 53 DNS servers will choose an answer anyway and return it rather than returning no DNS answer or returning an NXDOMAIN (non-existent domain) response. An application can respond to users but still fail health checks, so this provides some protection against misconfiguration.
Similarly, if an application is overloaded, and one out of three endpoints fails its health checks, so that it's excluded from Route 53 DNS responses, Route 53 distributes responses between the two remaining endpoints. If the remaining endpoints are unable to handle the additional load and they fail, Route 53 reverts to distributing requests to all three endpoints.
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-types.html
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-problems.html

Question 21

Question 22

Question 23

Question 24

Question 25

Download PDF File