You Have a Large Number of Web Servers in an Auto

question 116

Multiple Choice

You have a large number of web servers in an Auto Scaling group behind a load balancer. On an hourly basis, you want to filter and process the logs to collect data on unique visitors, and then put that data in a durable data store in order to run reports. Web servers in the Auto Scaling group are constantly launching and terminating based on your scaling policies, but you do not want to lose any of the log data from these servers during a stop/termination initiated by a user or by Auto Scaling. What two approaches will meet these requirements? (Choose two.)

• A) Install an Amazon Cloudwatch Logs Agent on every web server during the bootstrap process. Create a CloudWatch log group and define Metric Filters to create custom metrics that track unique visitors from the streaming web server logs. Create a scheduled task on an Amazon EC2 instance that runs every hour to generate a new report based on the Cloudwatch custom metrics.
• B) On the web servers, create a scheduled task that executes a script to rotate and transmit the logs to Amazon Glacier. Ensure that the operating system shutdown procedure triggers a logs transmission when the Amazon EC2 instance is stopped/terminated. Use Amazon Data Pipeline to process the data in Amazon Glacier and run reports every hour.
• C) On the web servers, create a scheduled task that executes a script to rotate and transmit the logs to an Amazon S3 bucket. Ensure that the operating system shutdown procedure triggers a logs transmission when the Amazon EC2 instance is stopped/terminated. Use AWS Data Pipeline to move log data from the Amazon S3 bucket to Amazon Redshift In order to process and run reports every hour.
• D) Install an AWS Data Pipeline Logs Agent on every web server during the bootstrap process. Create a log group object in AWS Data Pipeline, and define Metric Filters to move processed log data directly from the web servers to Amazon Redshift and run reports every hour.

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Definitions:

Asset Impairment Test

A procedure carried out to determine if an asset's carrying amount is not recoverable and exceeds its fair value, necessitating a write-down to its fair value.

Deferred Tax Asset

A tax benefit stemming from temporary differences between accounting and tax calculations, which will result in deductible amounts in future tax payments.

Intraperiod Tax Allocation

The apportionment of tax expense or benefit among the different parts of an entity’s financial statements, such as continuing operations and discontinued operations, within the same fiscal period.

Accelerated Depreciation

A method of depreciation in which an asset loses value at a faster rate in the initial years of its life, often used to reflect higher usage or obsolescence.