A Retail Company Has a Custom

question 568

Multiple Choice

A retail company has a custom .NET web application running on AWS that uses Microsoft SQL Server for the database. The application servers maintain a user's session locally. Which combination of architecture changes are needed to ensure all tiers of the solution are highly available? (Choose three.)

• A) Refactor the application to store the user's session in Amazon ElastiCache. Use Application Load Balancers to distribute the load between application instances.
• B) Set up the database to generate hourly snapshots using Amazon EBS. Configure an Amazon CloudWatch Events rule to launch a new database instance if the primary one fails.
• C) Migrate the database to Amazon RDS for SQL Server. Configure the RDS instance to use a Multi-AZ deployment.
• D) Move the .NET content to an Amazon S3 bucket. Configure the bucket for static website hosting.
• E) Put the application instances in an Auto Scaling group. Configure the Auto Scaling group to create new instances if an instance becomes unhealthy.
• F) Deploy Amazon CloudFront in front of the application tier. Configure CloudFront to serve content from healthy application instances only.

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Definitions:

Cadherins

Transmembrane proteins that are components of adhering junctions between animal cells.

Adhering Junctions

Cell-to-cell junctions that mechanically attach the cytoskeleton of a cell to that of another, playing a key role in maintaining tissue integrity.

Desmosomes

Cell structures specialized for cell-to-cell adhesion, found particularly in epithelial and cardiac tissues, helping to resist shearing forces.

Tight Junction

Tight junctions are specialized connections between adjacent cells in animal tissue that create a barrier to prevent the leakage of substances through the space between cells.