A Company Caches Session Information for a Web Application in an Amazon

question 293

Multiple Choice

A company caches session information for a web application in an Amazon DynamoDB table. The company wants an automated way to delete old items from the table. What is the simplest way to do this?

• A) Write a script that deletes old records; schedule the scripts as a cron job on an Amazon EC2 instance.
• B) Add an attribute with the expiration time; enable the Time To Live feature based on that attribute.
• C) Each day, create a new table to hold session data; delete the previous day's table.
• D) Add an attribute with the expiration time; name the attribute ItemExpiration . Add an attribute with the expiration time; name the attribute ItemExpiration .

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Definitions:

Inventory Balance

The value of all the goods available for sale or use by a business at the end of an accounting period.

Accounts Receivable

Financial obligations of customers to a business for services or goods delivered but not remunerated.

Accounts Receivable

Amounts due from clients to a business for goods or services already delivered but yet to be paid for.

Income Tax Payable

A liability account on a company's balance sheet representing the amount of income taxes owed to various governmental entities but not yet paid.