You Have Been Tasked with Deploying a Scalable Distributed System

question 9

Multiple Choice

You have been tasked with deploying a scalable distributed system using AWS OpsWorks. Your distributed system is required to scale on demand. As it is distributed, each node must hold a configuration file that includes the hostnames of the other instances within the layer. How should you configure AWS OpsWorks to manage scaling this application dynamically?

• A) Create a Chef Recipe to update this configuration file, configure your AWS OpsWorks stack to use custom cookbooks, and assign this recipe to the Configure LifeCycle Event of the specific layer.
• B) Update this configuration file by writing a script to poll the AWS OpsWorks service API for new instances. Configure your base AMI to execute this script on Operating System startup.
• C) Create a Chef Recipe to update this configuration file, configure your AWS OpsWorks stack to use custom cookbooks, and assign this recipe to execute when instances are launched.
• D) Configure your AWS OpsWorks layer to use the AWS-provided recipe for distributed host configuration, and configure the instance hostname and file path parameters in your recipes settings.

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Definitions:

Course of Performance

The conduct between parties under a contract that indicates what they consider to be the agreement's requirement, used to interpret the contract's terms.

Course of Dealing

The conduct between parties in previous transactions that establishes a common basis for their understanding.

Conforming Goods

Products or materials that meet the specifications and standards outlined in a contract or agreement between buyer and seller.

Course of Performance

A term referring to the conduct between parties that is used to interpret their agreement within their ongoing business relationship.