An Online Learning Company Is Migrating to the AWS Cloud

question 100

Multiple Choice

An online learning company is migrating to the AWS Cloud. The company maintains its student records in a PostgreSQL database. The company needs a solution in which its data is available and online across multiple AWS Regions at all times. Which solution will meet these requirements with the LEAST amount of operational overhead?

• A) Migrate the PostgreSQL database to a PostgreSQL cluster on Amazon EC2 instances.
• B) Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance with the Multi-AZ feature turned on.
• C) Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance. Create a read replica in another Region.
• D) Migrate the PostgreSQL database to an Amazon RDS for PostgreSQL DB instance. Set up DB snapshots to be copied to another Region.

---

Definitions:

Security Market Line

A graphical representation that shows the relationship between the risk of an investment and its expected return, based on the capital asset pricing model.

Expected Return-Beta Relationship

The concept that the expected return of an investment is dependent on its beta, which measures its systemic risk relative to the overall market.

Efficient Frontier

Graph representing a set of portfolios that maximize expected return at each level of portfolio risk.

Market Portfolio

The portfolio encompassing all assets in which each asset is held in proportion to its market value.