A Public Retail Web Application Uses an Application Load Balancer

question 345

Multiple Choice

A public retail web application uses an Application Load Balancer (ALB) in front of Amazon EC2 instances running across multiple Availability Zones (AZs) in a Region backed by an Amazon RDS MySQL Multi-AZ deployment. Target group health checks are configured to use HTTP and pointed at the product catalog page. Auto Scaling is configured to maintain the web fleet size based on the ALB health check. Recently, the application experienced an outage. Auto Scaling continuously replaced the instances during the outage. A subsequent investigation determined that the web server metrics were within the normal range, but the database tier was experiencing high load, resulting in severely elevated query response times. Which of the following changes together would remediate these issues while improving monitoring capabilities for the availability and functionality of the entire application stack for future growth? (Choose two.)

• A) Configure read replicas for Amazon RDS MySQL and use the single reader endpoint in the web application to reduce the load on the backend database tier.
• B) Configure the target group health check to point at a simple HTML page instead of a product catalog page and the Amazon Route 53 health check against the product page to evaluate full application functionality. Configure Amazon CloudWatch alarms to notify administrators when the site fails.
• C) Configure the target group health check to use a TCP check of the Amazon EC2 web server and the Amazon Route 53 health check against the product page to evaluate full application functionality. Configure Amazon CloudWatch alarms to notify administrators when the site fails.
• D) Configure an Amazon CloudWatch alarm for Amazon RDS with an action to recover a high-load, impaired RDS instance in the database tier.
• E) Configure an Amazon ElastiCache cluster and place it between the web application and RDS MySQL instances to reduce the load on the backend database tier.

Apply different compounded interest rates over varying periods to determine the value of investments or loans.

Analyze the impact of different rates and compounding periods on the growth of savings and investment plans.

Assess various financing options for purchasing assets to determine the most cost-effective method.

Determine the value of regular contributions to savings plans over time, taking into account compound interest.

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Definitions:

Post-Consumption Questions

These are inquiries made after a product has been used by the consumer, often aimed at gathering feedback on satisfaction, usage, and problems faced, for quality improvement purposes.

Future Consumer Behaviors

Anticipated patterns or trends in how consumers will make purchasing decisions, influenced by social, technological, and economic factors.

Sales Objectives

Specific goals set by a business regarding the amount of product it aims to sell within a certain period.