An Application Is Running on Amazon EC2 Instances Behind a Classic

question 368

Multiple Choice

An application is running on Amazon EC2 instances behind a Classic Load Balancer. The instances run in an Auto Scaling group across multiple Availability Zones. Occasionally multiple incoming requests will receive a 5xx HTTP response when making a request to the Classic Load Balancer. From the Amazon CloudWatch metrics, a SysOps Administrator observes the Elastic Load Balancing (ELB) SpillOverCount metric to be greater than zero during these occasions. These errors can be avoided by triggering scaling actions on which ELB metric?

• A) HealthyHostCount
• B) BackendConnectionErrors
• C) SurgeQueueLength
• D) UnHealthyHostCount

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Definitions:

Federal Insurance Company

An insurance provider that is regulated at the federal level, offering various types of insurance policies to protect against specific risks.

Timely

Refers to something done or occurring at a favorable or useful time; prompt.

Assent

Agreement or approval, typically given formally or officially, to a proposition or contract terms.

Offeree

The person or party to whom an offer is made, especially in contract law.