A Company Is Migrating a Single-Server, On-Premises Web Application to AWS

question 202

Multiple Choice

A company is migrating a single-server, on-premises web application to AWS. The company intends to use multiple servers behind an Elastic Load Balancer (ELB) to balance the load, and will also store session data in memory on the web server. The company does not want to lose that session data if a server fails or goes offline, and it wants to minimize user's downtime. Where should the company move session data to MOST effectively reduce downtime and make users' session data more fault tolerant?

• A) An Amazon ElastiCache for Redis cluster
• B) A second Amazon EBS volume
• C) The web server's primary disk
• D) An Amazon EC2 instance dedicated to session data

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Definitions:

Labor Costs

The total sum of all wages, benefits, and taxes that businesses must pay for employing workers.

Rental Rate

The cost of renting a property, piece of equipment, or other asset, typically expressed per unit of time.

Short-Run Average Cost

The average cost of production per unit in the short term, where some inputs are fixed and others are variable.

U-Shaped

A graphical representation showing a particular relationship where initial and end values are higher than those in the middle, resembling a "U" shape.