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

question 655

Multiple Choice

An Application performs read-heavy operations on an Amazon Aurora DB instance. A 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 the 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:

AC Time

A measure of the time that alternating current (AC) takes to complete one cycle, often referenced in electrical and electronic contexts.

Efficiency-Wage Theory

The theory suggesting firms pay wages above the equilibrium to increase worker productivity and reduce turnover.

High-Wage Policy

An economic strategy aimed at maintaining high wage levels for employees, often through minimum wage laws or collective bargaining agreements.