You Have Deployed a Three-Tier Web Application in a VPC

question 827

Multiple Choice

You have deployed a three-tier web application in a VPC with a CIDR block of 10.0.0.0/28. You initially deploy two web servers, two application servers, two database servers and one NAT instance tor a total of seven EC2 instances. The web, application and database servers are deployed across two availability zones (AZs) . You also deploy an ELB in front of the two web servers, and use Route53 for DNS Web (raffle gradually increases in the first few days following the deployment, so you attempt to double the number of instances in each tier of the application to handle the new load unfortunately some of these new instances fail to launch. Which of the following could be the root caused? (Choose two.)

• A) AWS reserves the first and the last private IP address in each subnet's CIDR block so you do not have enough addresses left to launch all of the new EC2 instances
• B) The Internet Gateway (IGW) of your VPC has scaled-up, adding more instances to handle the traffic spike, reducing the number of available private IP addresses for new instance launches
• C) The ELB has scaled-up, adding more instances to handle the traffic spike, reducing the number of available private IP addresses for new instance launches
• D) AWS reserves one IP address in each subnet's CIDR block for Route53 so you do not have enough addresses left to launch all of the new EC2 instances
• E) AWS reserves the first four and the last IP address in each subnet's CIDR block so you do not have enough addresses left to launch all of the new EC2 instances

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Definitions:

Abuse

The mistreatment or harm of a person or animal, often involving violence or manipulation, that can be physical, emotional, sexual, or neglectful in nature.

Post-traumatic Stress Disorder

A psychological disorder resulting from exposure to or being a part of a frightening incident, manifested through recurrent flashbacks, nightmares, intense stress, and persistent thoughts regarding the incident.

Psychological Distress

is the experience of emotional pain and suffering that affects an individual's mental health, leading to symptoms such as anxiety and depression.

Physical Symptoms

Physical symptoms are noticeable changes or sensations in the body that can indicate a health issue or medical condition.