A Web Application's Performance Has Been Degrading

question 440

Multiple Choice

A web application's performance has been degrading. Historically, the application has had highly-variable workloads, but lately, there has been a steady growth in traffic as the result of a new product launch. After reviewing several Amazon CloudWatch metrics, it is discovered that over the last two weeks the balance of CPU credits has dropped to zero several times. Which solutions will improve performance? (Choose two.)

• A) Begin using the T2 instance type
• B) Purchase more CPU credits for the existing instance
• C) Increase the size of the current instance type
• D) Configure a CloudWatch alarm on the CPU credits metric

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Definitions:

Straight Line Method

A method of calculating depreciation or amortization by evenly spreading the cost of an asset over its useful life.

Net Income

The total profit of a company after all expenses and taxes have been subtracted from total revenue.

Crossover Rate

The crossover rate refers to the point at which two different projects have the same net present value (NPV), used in capital budgeting to compare the desirability of investments or projects.

Mutually Exclusive

Situations, events, or decisions that cannot occur or be undertaken simultaneously—if one happens, the other cannot.