An Application Performs Read-Heavy Operations on an Amazon Aurora DB

question 646

Multiple Choice

An Application performs read-heavy operations on an Amazon Aurora DB instance. The SysOps Administrator monitors the CPUUtilization CloudWatch metric and has recently seen it increase to 90%. The Administrator would like to understand what is driving the CPU surge. Which of the following should be Administrator additionally monitor to understand the CPU surge?

• A) FreeableMemory and DatabaseConnections to understand the amount of available RAM and number of connections to DB instance.
• B) FreeableMemory and EngineUptime to understand the amount of available RAM and the amount of time the instance has been up and running.
• C) DatabaseConnections and AuroraReplicaLag for the number of connections to the DB instance and the amount of lag when replicating updates from the primary instance.
• D) DatabaseConnections and InsertLatency for the number of connections to the DB instance and latency for insert queries.

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Definitions:

Pure Competition

A market structure characterized by a large number of small firms, a homogeneous product, and free entry and exit from the market.

Pure Monopoly

A market structure characterized by a single seller controlling the entire market supply of a unique product, with no close substitutes.

Economic Profits

Profits exceeding the opportunity costs of all resources used by the firm, indicating an above-normal return.

Monopoly Rights

The exclusive power granted to a company or individual to produce, sell, or conduct business in a specific market without competition.