A Developer Added a New Feature to an Application Running

question 302

Multiple Choice

A developer added a new feature to an application running on an Amazon EC2 instance that uses Amazon SQS. After deployment, the developer noticed a significant increase in Amazon SQS costs. When monitoring the Amazon SQS metrics on Amazon CloudWatch, the developer found that on average one message per minute is posted on this queue. What can be done to reduce Amazon SQS costs for this application?

• A) Increase the Amazon SQS queue polling timeout.
• B) Scale down the Amazon SQS queue to the appropriate size for low traffic demand.
• C) Configure push delivery via Amazon SNS instead of polling the Amazon SQS queue.
• D) Use an Amazon SQS first-in, first-out (FIFO) queue instead of a standard queue.

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Definitions:

Financial Analyst

A person who studies the financial results of businesses and makes recommendations on their values as investments.

Capital Budgeting

The process by which investors and managers evaluate the profitability and financial viability of long-term investments and projects.

NPV

Net Present Value; a financial metric used to assess the profitability of an investment, calculated by subtracting the present value of cash outflows from the present value of cash inflows.

IRR

Internal Rate of Return; the discount rate that makes the net present value (NPV) of all cash flows from a particular project equal to zero, used in capital budgeting to measure the profitability of an investment.