A Company Is Running a Three-Tier Web Application to Process

question 137

Multiple Choice

A company is running a three-tier web application to process credit card payments. The front-end user interface consists of static webpages. The application tier can have long-running processes. The database tier uses MySQL. The application is currently running on a single, general purpose large Amazon EC2 instance. A solutions architect needs to decouple the services to make the web application highly available. Which solution would provide the HIGHEST availability?

• A) Move static assets to Amazon CloudFront. Leave the application in EC2 in an Auto Scaling group. Move the database to Amazon RDS to deploy Multi-AZ.
• B) Move static assets and the application into a medium EC2 instance. Leave the database on the large instance. Place both instances in an Auto Scaling group.
• C) Move static assets to Amazon S3. Move the application to AWS Lambda with the concurrency limit set. Move the database to Amazon DynamoDB with on-demand enabled.
• D) Move static assets to Amazon S3. Move the application to Amazon Elastic Container Service (Amazon ECS) containers with Auto Scaling enabled. Move the database to Amazon RDS to deploy Multi-AZ.

Describe the synthesis processes of different types of neurotransmitters, particularly amine neurotransmitters.

Discuss the characteristics and functions of electrical and chemical synapses.

Explain how neurotransmitters can be classified, deactivated, and how their action affects neural communication.

Understand how neural plasticity (e.g., in learning and habituation) is reflected in synaptic structure and function.

---

Definitions:

Capital Gains Tax

A tax levied on the profit received from selling a capital asset such as stocks, bonds, or real estate.

Earned Income Tax Credit

A refundable tax credit for low to moderate-income working individuals and families, primarily to benefit those with children.

Anti-Poverty Programs

Initiatives designed to reduce poverty by providing financial aid, education, and resources to those in need.

Working Poor

Individuals who have employment but whose incomes fall below a poverty line, due to low wages and/or part-time work.