AWS Solutions Architect Deployment & Scalability 1 — Questions and Answers

Question 1: Which AWS service is best suited for automatically scaling EC2 instances based on demand?

AWS Auto Scaling (Correct answer)
AWS CloudFormation
AWS Elastic Beanstalk
AWS Lambda

Correct answer: AWS Auto Scaling

AWS Auto Scaling automatically adjusts the number of EC2 instances in your application based on predefined metrics and conditions. This ensures that your application has the right amount of compute capacity to handle fluctuating demand, improving performance and availability. It also helps optimize costs by scaling down resources during periods of low usage.

Question 2: What AWS service allows you to distribute traffic across multiple EC2 instances?

AWS CloudFront
AWS Elastic Load Balancer (Correct answer)
AWS Direct Connect
AWS Route 53

Correct answer: AWS Elastic Load Balancer

AWS Elastic Load Balancer (ELB) automatically distributes incoming application traffic across multiple EC2 instances, improving application availability and fault tolerance. By spreading the load, ELB prevents any single instance from becoming a bottleneck and ensures that your application can handle varying levels of traffic. It also monitors the health of registered instances and routes traffic only to healthy ones.

Question 3: Which AWS service allows developers to deploy applications without managing infrastructure?

AWS Elastic Beanstalk (Correct answer)
AWS CodeDeploy
AWS OpsWorks
AWS Config

Correct answer: AWS Elastic Beanstalk

AWS Elastic Beanstalk is a Platform as a Service (PaaS) that simplifies the deployment and scaling of web applications and services. It handles the underlying infrastructure provisioning, such as EC2 instances, load balancing, and auto-scaling, allowing developers to focus solely on their application code. This abstraction significantly reduces operational overhead for infrastructure management.

Question 4: What AWS feature enables you to deploy infrastructure as code?

AWS CloudFormation (Correct answer)
AWS Auto Scaling
AWS CloudTrail
AWS Config

Correct answer: AWS CloudFormation

AWS CloudFormation allows you to define your AWS infrastructure as code using templates, which can be written in JSON or YAML. This enables you to provision and manage AWS resources in an organized, repeatable, and predictable manner. Infrastructure as Code (IaC) helps automate deployments, reduce manual errors, and version control your cloud environment.

Question 5: Which AWS service helps with deploying software updates in a controlled manner?

AWS CodeDeploy (Correct answer)
AWS CodePipeline
AWS Systems Manager
AWS Step Functions

Correct answer: AWS CodeDeploy

AWS CodeDeploy automates software deployments to a variety of compute services, including EC2 instances, AWS Lambda, and on-premises servers. It helps release new features rapidly, avoid downtime during deployment, and handle the complexity of updating applications. CodeDeploy ensures controlled and consistent deployments across your environments.

Question 6: Which AWS service is a serverless compute service that scales automatically?

AWS Lambda (Correct answer)
AWS EC2
AWS RDS
AWS Auto Scaling

Correct answer: AWS Lambda

AWS Lambda is a serverless compute service that runs your code in response to events without requiring you to provision or manage servers. It automatically scales your application by running code only when needed and scaling down to zero when not in use. This makes it highly cost-effective for event-driven architectures and microservices.

AWS Solutions Architect Deployment & Scalability 1

Which AWS service is best suited for automatically scaling EC2 instances based on demand?