An Organization Has Two Amazon EC2 Instances: the First Is

question 423

Multiple Choice

An organization has two Amazon EC2 instances: The first is running an ordering application and an inventory application. The second is running a queuing system. During certain times of the year, several thousand orders are placed per second. Some orders were lost when the queuing system was down. Also, the organization's inventory application has the incorrect quantity of products because some orders were processed twice. What should be done to ensure that the applications can handle the increasing number of orders?

• A) Put the ordering and inventory applications into their own AWS Lambda functions. Have the ordering application write the messages into an Amazon SQS FIFO queue.
• B) Put the ordering and inventory applications into their own Amazon ECS containers and create an Auto Scaling group for each application. Then, deploy the message queuing server in multiple Availability Zones.
• C) Put the ordering and inventory applications into their own Amazon EC2 instances, and create an Auto Scaling group for each application. Use Amazon SQS standard queues for the incoming orders, and implement idempotency in the inventory application.
• D) Put the ordering and inventory applications into their own Amazon EC2 instances. Write the incoming orders to an Amazon Kinesis data stream Configure AWS Lambda to poll the stream and update the inventory application.

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Definitions:

Second Intention

A method of wound healing where the wound is left open and allowed to close naturally without surgical closure.

Heavy Exudate

A condition characterized by the release of large amounts of fluid and proteins from blood vessels into surrounding tissues, commonly seen in wounds.

Sacral Region

The area of the lower back that is near the base of the spine, consisting of five fused vertebrae.

Saline-Soaked

Describes material, often gauze or another fabric, that is saturated with a saline solution, commonly used in medical settings to clean wounds or provide moisture.